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Read 14th Congress of Balkan Stomatological Society (BaSS) text version

14th Congress of Balkan Stomatological Society 9th Scientific Congress of Bulgarian Dental Association

6-9 May, 2009, Palace of Culture and Sports, Varna, Bulgaria

BaSS 2009

14th Congress of Balkan Stomatological Society 9 Scientific Congress of Bulgarian Dental Association

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6-9 May, 2009, Palace of Culture and Sports, Varna, Bulgaria

Editors: Nikolai Sharkov

Zhenya Maslinkova

Orginising Secretariat: + 359 887 608 364

Photos: Petar Petrov

Graphic Design www.zape4at.com

The names of the sponsors are in alphabetic order.

Proceedings of BaSS 2009

Bass 2009 Congress Committees

Dr. Nikolai Sharkov President 14th Congress of BaSS and 9th Scintific Congress of BgDA

Organizing Committee

Prof. Dr. Anelia Klisarova President of the Organizing Committee of the Congresses Dr. Emil Minchev Vice President of the Organizing Committee of the Congresses

Scintific Committee

Prof. Dr. Doan Ziya Prezident of the Scintific Committee of the Congresses Asoc. Prof. Dr. Snejanka Topalova Pirinska - Vice President of Scintific Committee of the Congresses

Members

Dr. Donka Stancheva - Zaburtova Asoc. Prof. Dr. Vasil Sveshtarov Asoc. Prof. Dr. Tsanka Dikova Dr. Zhulian Chaushev Dr. Temenuzhka Yordanova Dr. Galina Zaharieva Dr. Slava Dakovska Dr. Neva Chitalova Dr. Tsvetan Tonchev Dr. Simeon Simeonov Dr. Kamen Nogalchev Dr. Rmiana Daskalova Dr. Rumiana Vlachkova Dr. Diliana Mincheva

Members

Dr. Zhenya Maslinkova Prof. Dr. Andon Filchev Prof. Dr. Trifon Mihaylov Prof. Dr. Radomir Ugrinov Asoc. Prof. Dr. Hristina Popova Asoc. Prof. Dr. Milena Peneva Asoc. Prof. Dr. Angel Bakardjiev

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Contents BaSS Council Members.................................................................................................... 6 Messages from the Presidents of the Congresses, Organizing Committee and Scientific Committee ................................................ 7 Lectures................................................................................................................................. 11 Oral Presentations ............................................................................................................. 20 Poster Presentations......................................................................................................... 66 Index ...................................................................................................................................... 181

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BaSS COUNCIL MEMBERS

EXECUTIVE COMMITTEE

President Past President President Elect Vice President Secretary General Honorary Treasurer Editor in-Chief Prof. Marko Vulovic Prof. Andrei Iliescu Prof. Petros Koidis Prof. Hamit Bostanci Assoc. Prof. Lampros Zouloumis Dr. Efstratios Hassapis Prof. Ljubomir Todorovic

COUNCIL

Councilors

ALBANIA Prof. Dr. Ruzhdie Qafmolla Prof. Pavli Kongo BULGARIA Asst. Prof. Nikolai Sharkov Dr. Jivko Mihailov F.R.O.M. Prof. Mile Carcev Prof. Dr. Ana Minovska GREECE Assoc. Prof. Argirios Pissiotis Ass. Prof. Stelios Dalambiras ROMANIA Dr. A. Vucur Assoc. Prof. Andrian Creanga TURKEY Prof. Ender Kazazoglu Prof. Murat Akkaya SERBIA Prof. Dragoslav Stamenkovic Dr. Miodrag Barjaktarevic CYPRUS Dr. Georgios Pantelas Dr. Sami Solyali BOSNIA-HERZEGOVINA Prof. Maida Ganibegovic Dr. Savo Konstadinovic MONTENEGRO Dr. Aleksandar Adzic Dr. Branko Rasovic

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Deputy Councilors

Dr. Besnic Gavazi Dr. Emil Kuvarati Asst. Prof. Miroslava Dinkova

Prof. Julijana Gjorgova Dr. J. Popovski Prof. Theodoros Lambrianidis Dr. Vasileios Tsanidis Dr S. Stratul Dr. M. Popesku Dr.K.Orhan Dr. N. Arpak Dr. C. Snjeza Dr. Zoran Stamatovic R. Irodotou Dr. Filiz Kuntay Dr. D. Salihagic Dr. M. Stanojevic

Proceedings of BaSS 2009

Distinguished guests, Dear Collegues, Of the 14th Congress of Balkan Stomatological Society (BaSS) and the 9th Scientific Congress of Bulgarian Dental Association (BgDA). The Congresses will be the most important international scientific event this year on the Balkan Peninsular. The Congresses will pass of under the patronage of the President of the Republic of Bulgaria ­ Mr. George Parvanov, which is a great honor for all of us. Official guests of the Congresses are Dr. Roberto Vianna ­ President Elect of World Dental Federation (FDI), Dr. Norberto Francisco Lubiana ­ President of Brazilian Dental Association (ABO) and an advisor of the President of FDI, Dr. Orlando Monteiro Da Silva, President of the Council of European Dentists (CED) and President of Portuguese Dental Association and Dr. Gerhard Seeberger - President Elect of the European section of FDI (RO FDI). Such a highly presence at the Congresses of the World and Europe key persons in dentistry shows that the dental science and the dental services on the Balkans play significant role for the oral health of people not only in that part of the Old Continent but in the dentistry all over the world. The Scientific Programme of the Congresses, which consists of thirteenth lectures from distinguished European lecturers, 130 oral presentations and over 500 poster presentations from more than ten countries, shoes the last achievements in the medical and dental science and contemporary treatment methods for everyday practice. New techniques, materials, technologies, instruments etc. are send in the Dental Exhibition, which is going along with the event. It is no accident that Varna was chosen for a congress town. Varna, the "Sea Capital" of Bulgaria, was declared "The Best Town for living in Bulgaria" for the year 2008! The Varna public will meet all the participants of the Congresses with the famous warm Bulgarian hospitality. The Medical University with three faculties ­ Medical, Dental Medicine and Pharmaceutical, is a well known important educational center not only in Bulgaria but in Europe as well. The Regional Body of the BgDA is very active, united and prospering. The neighboring famous sea resorts in a very beautiful and picturesque surrounding will ensure everyone a pleasant and unforgettable stay during the congress days. Cordially, Dr. Nikolai Sharkov President of the Congresses President of BgDA Ladies and gentlemen,

Distinguished guests of XIVth Congress of the Balkan Stomatological Society and the IXth Scientific Congress of the Bulgarian Dental Association, Dear Participants, Dear Colleagues,

Distinguished guests, Dear colleagues and guests of the XIVth Congress of Balkan Stomatological Society and IXth Scientific Congress of Bulgarian Dental Association , Let me welcome you for the participation in this exceptional event on the Balkans which gives us the opportunity for exchange scientific knowledge and experience and which strengthen our friendship. Let me wish you health and personal and professional success. I hope you will have unforgettable days in our beautiful Bulgarian sea Capital ­ Varna. Sincerely yours: Prof. Dr. Doan Ziya President of the Scientific Committee of the Congresses Dean of the Sofia Faculty of Dental Medicine

It is an enormous pleasure for me to warmly welcome you to this prestigious forum which Varna Medical University is honoured to host. The year 2009 has been proclaimed by the European Parliament for the European Year of Creativity and Innovation. Our Faculty of Dental Medicine is the youngest Faculty in Bulgaria but also with the youngest, most knowledgeable and ambitious academic staff, the most modern building and training facilities. Our priority is directed toward utilizing the energy and the resources we have for the development of science and research in the field of dental medicine, establish contacts with other Universities from around the world and we as Organisers will offer you the chance to do so. I would also like to welcome the leading world specialists who honoured the Congress with their presence and participation, the Presidents and representatives of World Dental Federation, the European section of FDI, the Council of European Dentists, the Brazilian Dental Association, Portuguese Dental Association and all the Balkan Dental Associations. This scientific meeting is a small step contributing to the improvement of the dental health not only of the population in the Balkan countries but worldwide as well. To all the dental practitioners and researchers participating in the Congress I wish fruitful work and success in their presentations, new contacts for future collaboration and exchange of scientific knowledge, good dental practices and useful ideas! Good luck! Prof. Dr. Aneliya Klissarova, PhD, DSc President of the Organizing Committee of the Congresses Rector Varna Medical University

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GERhARD KONRAD SEEBERGER, ITALy BIOLOGY AND IMPLANT TREATMENT: HOW TO PREDICT SUCCESS Modern as well as consolidated methods in diagnostics and treatment planning can reduce implant surgery procedures to a minimum. One-piece implants, involved in prosthetic rehabilitations in the mandible since more than two decades, and correct positioning of two-piece implants contribute to minimize technical steps and number of implant components. Both implant types have been inserted into the mandible and into the maxilla for immediate replacement after tooth extraction and for delayed rehabilitation. Single and multiple implant cases have been approached with minimally invasive techniques and maximum respect for biology and undisturbed wound healing of tissues. All implants showed perfect osseous- and soft tissue integration. Patients started domestic implant maintenance very early. No preparation of abutments and for impression taking was needed in most of the one-piece implant-cases. The onepiece shape permitted both, perfect aesthetics and proper function. Two-piece morphologies were handled in order to maintain tissue levels as at the time of tooth extraction and to induce even coronal development of the biologic width. Simple surgical and prosthetic procedures in implant dentistry reduce number of implant components, treatment time and costs. CURRICULUM VITAE Gerhard Konrad Seeberger studies and graduates in dentistry at the Julius-Maximilian-Universität Würzburg. Since 1986 he is a private practitioner in Cagliari (Italy). His main interests are oral surgery, implant dentistry, function and aesthetics in restorative dentistry and periodontology. He is a member of the - Società Italiana per Osteointegrazione, SIO (Italian Society for Osseointegration) - "Akademie Praxis und Wissenschaft" within the German Society of Dentistry (DGZMK) - European Association for Osseointegration, EAO - Bavarian Study Club of Periodontology (Founding member and Past-President) - Accademia Italiana di Odontoiatria Protesica, AIOP - Centri Laser in Odontoiatria e Dermatologia, CLOD (VicePresident) He is a speaker in numerous national and international events and courses in Asia, Europe and North- and Central America lecturing on implant dentistry, periodontology, function and aesthetics in restorative dentistry and safety procedures in dental practice. He is an Honorary member of the Chicago Dental Society, CDS, the Romanian Association of Private Practitionaers in Dentistry, AMSPPR and of the Società Italiana di Maxillo-Odontostomatologia, SIMO. He is the Acting-Regent for Southern Europe of the Academy of Dentistry International, ADI. He is a fellow of the Pierre Fauchard Academy, PFA.

DR. WOLfRAM SADOWSKI, GERMANy ANCHORAGE OF FULL DENTURE IN MANDIBLE WITH THE MICROPLANT®-SYSTEM. The rate of older people growths in the whole of Europe. Many of them are toothless despite the achievements of dentistry. A big problem of the seat of the total denture, especially in mandible, is the increasing atrophy. The classic solution with 4 Implants an 1-3 bars needs much of bone for insertion of the implants. But even the useful bone is vanished by atrophy. A way out in this situation offers the MicroPlant®-System. With just 2 implants with press buttons as junction to the denture it is possible to anchor a full denture in mandible. The Implants may inserted because of their small size also in atrophied mandible. The surgical intervention is a little less stressing for older multimorbid patients. The MicroPlant®-System will be showed in the speech by clinical example. CURRICULUM VITAE Name: Dr. Wolfram Sadowski (M.D.) Germany Born in 1954 since 1991 dentist in own practice in Gransee/Germany 1982-1986 scientific assistant at Hospital and Outpatients' Department for Dental, Oral and Maxillofacial Diseases of university Greifswald/Germany 1986-1988 senior physician at dental department of policlinic Strasburg/Germany 1973-1978 study of dentistry Medical Academy Sofia/Bulgaria 1983 specialist of general dental practice 1986 graduation as Medical Doctor University of Greifswald/Germany Publications An easy method of determinig root canal length by X-rays Stomatol DDR 37 (1987), 608-613 An electronic device for measuring rott canal length by AC Stomatol. DDR 38 (1988), 90-94

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He is the Immediate Past-President, the Officer for Foreign Affairs and a member of the Board of Lecturers of the Associazione Italiana Odontoiatri, AIO, (Italian Dental Association). He is the President of the Board of Dentistry of the Province of Cagliari, Italy, and a Delegate of the General Assembly of the National Dental Board. He is the President-Elect of the European Regional Organization of the World Dental Federation (ERO-FDI). He is an Assistant Professor of the Dental School of the Università di Cagliari, Italy. He is an Asscociate Professor at the University of Iasi, Romania. He is a referee in the National Continuing Education Program in Dentistry of the Italian Ministry of Health.

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IVANA RADOVI DDS, MSC, SERBIA THE USE OF FIBER POSTS IN GENERAL PRACTICE Reconstructing endodontically treated teeth with prefabricated fiber post and core systems has been widely accepted as a treatment option offering both esthetics and function. The advantages of fiber post and core restorations have been demonstrated in in vitro studies. Retrospective and prospective clinical studies have shown overall satisfactory performance of endodontically treated teeth restored with fiber post and core systems. An important characteristic of fiber posts is a modulus of elasticity similar to dentin, resin cements and resin core materials. This feature is most beneficial in the presence of a homogeneous post-composite-dentin structure that would allow optimal stress distribution. Therefore, the importance of optimal coupling between fiber post system components has been recognized and investigated. The aim of this lecture is to implement the findings of scientific investigations of fiber posts into every-day clinical practice. Different aspects that may affect the quality of fiber post cementation will be presented. The focus of the lecture will be on post surface preparation, the choice of resin cement and the importance of light transmitting ability of the post.

ThEODOROS LAMBRIANIDIS, GREECE IRRIGANT RELATED ERRORS A wide range of irrigants at various concentrations has been proposed for root canal instrumentation. Sodium hypochlorite, an inexpensive and readily available agent that combines profound antimicrobial and soft-tissue dissolving capacities is the most potent and universally adopted irrigant. Irrigant related errors can be attributed to extrusion into periapical tissues and into maxillary sinus, to leakage to the gingiva and oral mucosa, gastrointestinal and respiratory tract to skin injuries color changes, ocular chemical trauma, allergic reactions and problems due to their increased concentration of the irrigant in the environment of the surgery Reactions differ according to the irrigant and depend on the type, concentration and the amount of "leaked" irrigant as well as on local and systemic factors of the host. Characteristic cases for all errors will be presented. No standard protocol for management of most of the complications has been described so far. Any intervention depends on the nature and severity of the incident. Management and prevention measures for every error will be presented. CURRICULUM VITAE Name: Theodoros Lambrianidis Date and Place of Birth: September 20, 1952, Thessaloniki, Greece Education: 1970-1976 Undergraduate Studies, School of dentistry of Aristotelion University of Thessaloniki, Greece 1976-1978 Postgraduate Studies, Oral Surgery Department, Queen Mary's Hospital- London, and at King's College Hospital Dental School, London, UK 1981 PhD, School of Dentistry, of Aristotelion University of Thessaloniki, Greece 1984-1985 Sabbatical at Eastman Dental Hospital, London, UK Employment: Since 1980 member of the Department of Endodontology, School of Dentistry, Aristotelion University of Thessaloniki. From 2006 full Professor at the same department. 1980-today Private practice exclusively in endodontics Main Research Interest Iatrogenic errors during root canal treatment Publications/Participation in Conferences/Meetings More than 200 presentations in national and international conferences/meetings/seminars, author of 120 articles in Greek and international journals, author and co-author of 6 books and a chapter in book on the subject of endodontics. Chief-Editor of the Greek journal "Endodontologia" served at various period as board member of international and national journals (Endodontics and Dental Traumantology, Balkan Journal of Stomatology, Stoma)

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CURRICULUM VITAE Ivana Radovic Teaching and research assistant Clinic for pediatric and preventive dentistry Faculty of dentistry University of Belgrade, Serbia Ivana Radovic works as a teaching and research assistant at the Clinic for paediatric and preventive dentistry, Faculty of dentistry, University of Belgrade, Serbia, where she graduated in 2001, and received a Master's degree in 2005 (topic: Bond strength, microleakage and SEM investigation of self-etching adhesive systems). Since 2005, Dr. Radovic has been attending the PhD program "Dental materials and their clinical applications" at the University of Siena, Italy, where she defended Master thesis in 2006 (topic: Coupling between fiber posts and resin cements). Dr. Radovic specialized in preventive and paediatric dentistry at the Faculty of dentistry, University of Belgrade in 2007. Currently she is preparing to defend PhD thesis at the University of Siena (topic: Factors that affect fiber post cementation). She co-authored a textbook "Fiber posts and endodontically treated teeth: a compendium of scientific and clinical perspectives" (editor: Professor Marco Ferrari). Dr. Radovic published 27 articles in the field of adhesive dentistry in international scientific journals, and presented more than 30 abstracts at scientific meetings.

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M. NEjAT ARPAK AGE FACTOR IN IMPLANT THERAPY The goal of modern dentistry is to restore the patient to normal contour, function, comfort, esthetics, speech and health. Implant dentistry has become a vital part of prosthodontics for all types edentulous patients in all ages According to literature age is related directly to every indicator of tooth loss. There are some factors influencing the implant therapy which needs to be evaluated prior to treatment procedures. These are: Patients age Patients desires Patients compliance and fear Treatment time and cost Esthetics Adjacent tooth, mobility, occlusal relationship, crown height - Available bone height, width - Soft tissue drape type; Sorrounding gingival tissues Most often age guidelines are related to patients biological age more than chronological age. To wait until skeletal and dental growth has been completed is logical. As a general rule, implant insertion in the anterior maxilla is delayed for females until at least 15 years of age and males until 18 years of age. People who become edentulous late in life are particularly challenging group to treat. Implant supported dentures seem particularly appropriate for the predicament of being elderly and becoming edentulous. However, osseointegration is dependent on a wound-healing response that could be less prosperous in older than in younger patients. Regarding the young and old age many parameters must be evaluated prior to the placement of dental implants. CURRICULUM VITAE 14.05.1953 ANKARA Master: University of Hacettepe Dental Faculty 1978 Ph.d. programes: University of Ankara Dental Faculty 1982 Commissions: 1978-1982 Periodontology Department of Dental Faculty, Ankara University - Investigation commissioned 1982-1984 Military Hospital of Erzurum Mareal Çakmak, Dental Clinic - Dentist of Officer 1984-1985 Periodontology Department of Dental Faculty, Ankara University - Dr. Investigation commissioned 1985-1987 Periodontology Department of Dental Faculty, Ankara University - Assistant of associate professor 1987-1992 Periodontology Department of Dental Faculty, Ankara University - Associate professor 1995-1997 Universitys of Hamburg and Köln Dental faculty - Visiting Professor 1992-2004 Periodontology Department of Dental Faculty, Ankara University - Professor

Membership of Directorate: - Turkish Periodontology Society - European Federation of Periodontology - Chairman of Society of Comprehensive Oral Rehabilitation 2003-2005 - Balkan Stomatological Society

R. KOLAROV, L. BOyANOVA, PfIZER COMPANy PFIZER'S MEDICINES IN THE DENTAL PRACTICE ­ PAIN MANAGEMENT AND BACTERIAL RESISTANCE OVERCOMING

R. QAfMOLLA, ALBANIA THE CONTEMPORARY CONCEPTS OF THE OCCLUSION AND PRINCIPLES OF ITS DIAGNOSIS AND TREATMENT The biological and functional aspects of the teeth need to ensure a healthy physiological occlusion. In nowadays exist two basic concepts of the neurology of the occlusion: 1] the concept of the occlusal stability; and 2] the concept of function of this occlusion. Based at the concept of the occlusal stability, the occlusion should be symmetric, numerous and synchronic. It is the balanced bilateral occlusion. The concept of function of this occlusion is jointed with participation of whole tissues of the occlusal dynamic. In this case is supposed the presence of all teeth, which are oriented in harmonic manner in dental arcade of the central position, using the compensation of sagital and transversal curves. Those are unilateral occlusion, as well as the stored occlusion in double-sided manner. These different clinical concepts of the occlusal stability are used in causal therapy already. It includes the stable relation of the jaw in central occlusion, as well as in central relation. The criteria of the occlusal diagnose are based by condition and function of the mastication apparatus to every individual. These criteria are: a] the criteria of non-correspondence of the central relation with central occlusion; b] the criteria of damage of the occlusal rate and vertical altitude of the occlusion. The main objective of the treatment has been the occlusal rehabilitation, the correspondence of the teeth row in the base of the balanced occlusion principle, avoiding the occlusal prefunction and muscular hyperactivity. As conclusion this occlusal rehabilitation was ensured using prosthetic manners and tools. CURRICULUM VITAE Graduated from University of Tirana on Faculty of Medicine, department of Stomatology, specialized on prosthetic dentistry. Is pedagogue since 1971 (chief for gnatology, dental materials) and it continue to be professor. From 1994 to 1998 was head chief of University Clinic of Dentistry. From 2002 still now is

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chief of Prosthetic Section. On 2008 is named suches head chief of Department. Was president of the \university Dental Association for two legislations. Was assistant president of Medical Chamber of Albania for two legislations. Member and consultant in the council and committee of BaSS and board. Member of the board of Albanian Dental Journal and Balkan Dental Journal. Editor in chief of Albanian Medical Chamber. Publication: Four didactic texts for student of dentistry and one monography. Over sixty articles in dental Journals in Albania, Balkan and Europe. Over forty presentations on National and International Conferences and Congresses. Scientific titles 1982 received PhD degree, 1988 docent, 1994 associated professor, 1999 professor doctor. She was honest with medal from Biographic Institute of London suches intellectual of the 21th century.

able therapeutic solution 01, the initial plan of treatment, the reliability score and the oral rehabilitation predictions P1.By adding the patient initial score S1 and the oral rehabilitation predictions provided by the application P1, we obtain the patient initial therapeutic score ­STi (a real value ranging between 0-2) Conclusions The simulation programs and the electronic format of the observation paper are efficient tools that provide an integrative holistic approach of patients with different forms of oral pathology, under the incidence of local, loco-regional and general complications. CURRICULUM VITAE POSITIONS HELD: 2004 - Dean of the Dental Medicine Faculty, "Grigore T. Popa" University of Medicine and Pharmacy (Iasi) 2004 - president of the Dentists College of Iasi 2008 - Master Degree in Business Administration, Postgraduation Management School - Marketing SCOP 2M, at the Faculty of Economy and Business Administration 2006 - Coordonator of the complementary studies program in the Oral Implantology, Iasi May 2006 ­ member of the dental medical specialty commission within the consulting commissions of the Ministry of Health 2002 - Competent in IMPLANTOLOGIE (MSF, AIID); 1997, 2003 Overspecialization in Implantology, dental prosthetics and oral surgery (Paris 5, 6, MSF); 2001- physician ­ general medicine Feb. 1997 ­ PhD title in Medicine for the thesis Biological and Biomechanical Exigencies of the Dental Implant 1991 ­ named General Dental Medicine Specialist of Health by the Ministry of Health Aug. 1996 ­ named Primary Medical Doctor Primary Surgeon in Oral-Maxillofacial Surgery Jan. 2003­present: general medicine practitioner (family medicine); Aug. 1996: primary general dental medicine practitioner at the County ClinicalHospital nr. 1 (Iasi) and the Clinic of Dental Prosthetics; May 1995-Sept. 1995: primary general dental medicine practitioner at the CountyClinicalHospital nr. 1 (Iasi) and the Dental Polyclinic nr. 2 (Iasi); Nov. 1996: chief medical practitioner at the Dental Polyclinic nr. 1 (Iasi) SPECIAL DISTINCTIONS: · TheOrder,,MeritforTeaching"withtheknightstatusawarded by President of Romania Ion Iliescu; through a presidential decree at the proposal of the Education and Research Ministry ­ 10th of December 2004, published in the Official Monitor of Romaniai, part I, nr. 1.181/13.12.2004 · DiplomaofHonorforspecialmeritsinthefieldofOralImplantology awarded by the Romanian Society for Oral Implantology and Biomaterials, Dental Medicine Faculty ­ U.M.F «Carol Davila» (Bucharest) and the Romanian Dentists College, 6th ­ 7th of May 2005.

Lectures

N.C. fORNA, ROMANIA THE ROLE OF NANOSCIENCE AND NANOTECHNOLOGIES IN UPDATING THE CLINICAL SCORE OF THE PARTIAL EDENTULOUS PATIENTS. The purpose of this study is to show the impact of informatics in the teaching process at the Faculty of Dental Medicine, Iasi and the contribution of the simulation programs both to the understanding of theoretical concepts and to their correlation with the practical aspects studied in the speciality disciplines. In order to elaborate a correct plan of diagnosis and find the correct therapeutic solution of election in partial edentulous it would be necessary to use a Support System for Clinical Decisions (SSCD). This may bring many benefits both to the private medical assistance,and to institutions with wider therapeutic, educational and scientific objectives. Methods and Materials: Using as starting point the Pro Dent platform of application existing at the Faculty of Dental Medicine from The University of Medicine and Pharmacy Gr T Popa, Iasi we have developed an expert system for clinical case evaluation and for providing a reliable therapeutic solution. In this respect we have used the ProDent application databasea complete and complex database which records information about patients. There have been established three classes of information recordable in computerized form:socio-economical, psycho-behavioral and clinico biological index. Results: Using these data SSDC will make an initial evaluation of the patient ­S1(a real value between 0-1) The S value is obtained from the socio economic index(Ise), the psycho behavioral index(Ipc) and the clinico biological one(Icb) At the same time the application generates a table recording a clinico biological data hierarchy, highlighting the categories which may require intervention during the specific preparation stage. The use of bayes inference also indicates the most reli-

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MEMBERShIPS: - SMN member (vice-president of SMN since Febr. 2003) since 1990; - Member of Association d'Enseignement d'Odontologie et de Stomatologie (AEOS, Frana), 11 decembrie 1997. - Member of Societé Francaise d'Implantologie (SFI, Frana), November 1997. - Member of Balkan Stomatological Society (BaSS), 2-5 aprilie 1998. - Member of International Dental Federation(FDI), iunie 1998. - Member of the Oral Implantology Society IRCOI (2002). - Member of Internationalen Gesellschaft fur Ganzheitliche ZahnMedizine. V.(G.Z.M) - Member of the Leading Board of IMAT, Germany, (2006) - Member of the Leading Board of Eidam, Canada (2006) - Founding member and member in Federal board of International Federation of Odontostomatology and cranio-facial surgery (I.F.O.S.C.M.F.S.) - Member of CIDCDF-2006 - Member of American Dental Association, 2007 - Member of American Academie of Implantology, 2007 - Member of Academie of Periointegration, 2007 - Member of European Prosthetic Academie, 2007(EPA) - Member of ADEE, 2004 - Member of The Royal College of Surgeons of Englands - President of stomatological Section, (SMN) - Founding member of the following Associations and National societies : 1. Dental Romanian Association for Education (member of ADEE) 2. Romanian Society for Rehabilitation (member of EPA)

CURRICULUM VITAE Date of birth: 19.08.1976. Current occupation: Senior assistant at Faculty of Dentistry, Department of Preventive and paediatric dentistry, University of Sarajevo, Bosna and Herzegovina General secretary of Section of Preventive and pediatric dentistry of Dental Association of Bosna and Herzegovina General secretary of International Association for Paleodontology Education: PhD candidate Specialist of Preventive and Paediatric Dentistry in 2007. Master Degree at Faculty of Dentistry, University in Sarajevo, in 2005. Published papers: · akasE,ZukanoviA.Theprevalenceofcariogenicsalivary N micro-organisms in children of various ages. Bosnian Journal of Basic Medical Sciences. 2007; 7(2):166-170

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· Awardedthetitle"DiplomatoftheRomanianSocietyofOral Implantology and Biomaterials", for the special activity in the making of the projects of the Romanian Society of Oral Implantology and Biomaterials, distinctions awarderd during the 9th session of the International Congress of Oral Implantology, Bucharest, ROMEXPO, 22nd-25th of November 2006 · Excellence Diploma for promoting on a global level of the oral implantology, awarded by the Romanian Society of Oral Implantology and Biomaterials · Awardedthetitleof,,HonoraryProfessor",oftheInternational Course of Oral and Maxillo-Facial Surgery 2003-2006 · Includedinthebiographyofthe"Whoiswho"personalities' encyclopedia

ZUKANOVI AMILA, DDS, MSC, BOSNIA AND hERZEGOVINA CARIES RISK ASSESSMENT IN CHILDREN Caries risk is the probability of an individual to develop new caries lesions during the time. Assessing patient's caries risk should be considered as starting point in caries management. The aim of caries risk assessment is identification of persons who will most likely develop caries in the future and identification of leading risk factors that provide the possibility of conducting effective preventive and treatment measures to prevent and stop the disease. For these reasons, it is important to assess caries risk in children, especially to identify those at high risk and to determine leading risk factors for new caries lesion development. A big number of microbiological, genetic, immunological factors, factors related to socioeconomic and epidemiological circumstances and others participate in caries development and caries expression. Caries development depends on doses, frequency and exposure time to certain etiological factor. Up to now, many different strategies has been proposed for caries risk assessment. Those prediction models contained different risk factors and indicators for caries prediction, different ways of evaluation and interpretation of the results. Prediction models based on a single factor couldn't accurately predict an individual's susceptibility on caries. Few multi-factorial prediction models have been developed but all those attempts have given low or moderate values. The risk of dental caries must be evaluated by analyzing and integrating several causative factors. Considering the fact that caries risk assessment requires analysis of several factors, relations between caries etiological factors and their numerous interactions, computer programs recently start to be created for that purpose. Different models for caries prediction in children will be discussed while special attention will be given to computerized approach in caries risk assessment (Cariogram and PreViser ­ oral health risk assessment software).

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· ukanoviA,KobaslijaS,GanibegoviM.CariesriskassessZ ment in Bosnian children using Cariogram computer model. International Dental Journal. 2007;57(3):177-183 · ukanovi A, Ganibegovi M. Preventive dentistry in BosZ nian Private Dental Practices. Acta Stomatol Croat. 2007; 41(3): 193-204 · ukanovi A, Kobaslija S, Ganibegovi M. Computer use Z in a caries risk assessment. Acta Informatica Medica. 2007;15(4):201-205 · ukanoviA.PaleodontologyinBosniaandHerzegovina­ Z history and perspectives. Bulletin of the International Association for Paleodontology. 2007;1(2):18-20 · ukanoviA,MulaomeroviJ,MarjanoviD.ResultsofpaZ leostomatological analysis of material from the cave near Gornji Vakuf (South-west Bosnia). Acta Carsologica 2007; 36(3): 485-492 · ukanovi A, Muratbegovi A, Kobaslija S, Markovi N, Z GanibegoviM,BeslagiE.Therelationshipbetweensocioeconomic backgrounds, caries associated microflora and caries experience in 12-year-olds in Bosnia and Herzegovina in 2004. Eur J Paediatr Dent. 2008;9(3):118-24. · uratbegoviA,MarkoviN,KobaslijaS,ZukanoviA.Oral M Health Indices and Molar Incisor Hypomineralization in 12 Year Old Bosnians. Acta Stomatol Croat. 2008; 42(2):155163 · uratbegovi A, Zukanovi A, Markovi N. Molar-incisorM hypomineralisation impact on developmental defects of enamel prevalence in a low fluoridated area. Eur Arch Paediatr Dent. 2008;9(4):228-31.

G. TOMOV, BULGARIA OZONE TREATMENT IN DENTAL MEDICINE After 125 years of usage, ozone therapy is not only recognized as a medical agent but is also becoming a part of dental care system in countries like Germany, Israel, Japan, Canada etc. Ozone has multiple medical effects: The elimination of microorganisms (disinfection from bacteria, viruses and fungi), the oxygenation of tissue and improvement of healing, balancing oxygen and other metabolic reactions. An increase in cell energy by stimulating the Krebs Cycle (production of ATP). The stimulation of white blood cells and the immune system response (production of cytokines: TNF, IL-2, interferon). An increase in blood flow and the elasticity of erythrocytes.The elimination of toxins. By providing high-quality medicine, ozone raises the bar to a new height because among dental treatment devices and materials, it is a special class. This class is primarily defined by high level disinfection from all microorganisms; painless treatment with no side effects, toxic reactions or need of medications; promotion of the body's own natural healing mechanisms and pain relief. In addition, the numerous use indications -- surgery, periodontology, dental and oral pathology, viral and fungal infections, prosthodontics and restorative dentistry, orthodontics, and vitality tests - ozone is going to improve the success rates of many standard dental procedures. On the basis of author's clinical experience and literature data the lecture discusses clinical protocols in applying ozone in dental medicine. Indications, contraindications, how to use ozone, the way it works, concentration and duration of exposure are also mentioned. The lecture is backed up by an opulent visual material. CURRICULUM VITAE Dr. Georgi Tomov graduated with distinction the master degree of Dental Medicine in the Faculty of Dental Medicine, Medical University, Plovdiv in 2004. After 2-years practice as a military dentist, in 2006 he is appointed as a regular PhD student in the department of Operative dentistry and endodontics, Faculty of Dental Medicine, Plovdiv. Dr. Tomov has a specialty in Operative dentistry and endodontics ­ 2008. In 2009 after successful defence of his PhD thesis "Irrigation in infected root canals. Laboratory and clinical studies", he acquired the scientific degree "Doctor". Currently dr. Tomov is maintaining a private practice in Plovdiv. Both his scientific interests and clinical practice are orientated to endodontics and prevantive dental medicine. Co-author of a textbook in clinical psychiatry for dental students. Leading author of a project funded by the Medical University, Plovdiv entitled: Oral health in drug addicted patients". Participates and gives lectures during different national and european congresses and symposia. Dr. Tomov is involved as a lecturer in postgraduation continuing education program for dental general practitioners - 2009. Clinical consultant of Biozonix, Germany since 2008. Member of Bulgarian Dental Association.

Lectures

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OP 001 EffECT Of ThREE TOPICAL fLUORIDE SOLUTIONS ON Ph VALUES Of PLAQUE AND SALIVA Authors Hasic-Brankovic L, Lekic M, Konjhodzic H, Kobaslija S, Korac F Faculty of dentistry, University of Sarajevo, Bosnia and Herzegovina Recent studies on the caries- prophylactic action of fluoride have indicated that fluorides act entirely locally, via topical action, through saliva, plaque and plaque fluid. The intention of this paper is effort to discover events inside plaque and saliva after application of three topical fluoride solutions: 1% TiF4, 1% NaF and Aminfluorid solutio. Efficiency of three of these was estimated through vary pH level of saliva and plaque. 60 adult volunteers, divided in three groups (20 volunteers for each group, one agent per one group) have participated in the research. Subjects refrained of oral hygiene for 48 hours before the experiment. Saliva and plaque samples were taken before the application of fluoride solutions, and again after 5, 30, 60 and 120 minutes following the treatment. 5, 30 and 60 minute sample of saliva in treatment with 1% TiF4 showed significant drop of pH value. pH of the plaque stayed in so called "critical zone" (pH= 5, 25-5, 5) for each solution within two hours. Performed statistics didn't show clearly visible correlation between pH value of saliva and plaque.

Results: After a year of our research, application of chlorhexidine varnish has shown that, difference of the S. mutans values are much lower in test group compared with the control group (0.08 vs. 0.41), (p<0.001). In the test group, the values of SM remained lower, and in the control group the values of SM were obviously higher. The incidence of caries, expressed by dmfts index, shows lower caries incidence in the test group than in the control group (p<0.001). Conclusion: One year application of chlorhexidine varnish testifies the antimicrobial effect which is evident with inhibition of S. mutans and formation of dental plaque. Cariogenic effect is evident with lower caries incidence. Prevention of dental and periodontal diseases with mechanical methods supplemented with antimicrobial agents like Cervitec® will achieve better results. Key words: Caries, S.mutans, chlorhexidine (Cervitec®)

Oral Presentaions

OP 003 fIRST DENTAL VISIT Of ChILDREN IN ALBANIA Authors Ergysejda Hoxha, Prof. Diana Brovia, Enida Petro, Manola Kelmendi University of Dentistry, Tirane, Albania Introduction: Parents usually do not have full understanding of the implications of the child's first visit to the dentist and they are often unsure whether this first visit should serve as a check up or whether it should come whenever the child has a tooth problem. Purpose: The aim of our study was to assess the main reason for which parents take their children for the fist time to the dentist and the average age group at which they report their first dental visit. Material and Method: This study included 532 children of ages 2-10. Their parents filled up a questioner and complaints of the children were all examined. Results: Parents reported that the first dental visists of their children were between 4-5 years. The most common reasons for the first dental visit was pain in temporary teeth and dental caries was the second most common reason. Conclusion: It is evident that the awareness level regarding the importance of the first dental visit is very low in the Albanian population, with an average age of the child first dental visit being at 5 years of age. The common reason for seeking dental care at the first visit is found to be pain and dental caries.

OP 002 EXAMINATION Of ANTIMICROBIAL AND ANTICARIOGENIC EffECT Of ChLORhEXIDINE VARNISh IN ChILDREN Authors Begzati Agim, Raka Adil, Ademaj-Kutllovci Teuta, Begzati-Rexhepi Ajten, and David Gabriele. Department of Pedodontics and Preventive Dentistry, University of Prishtina, Dental School of Prishtina, Kosova Introduction: Poor oral health in children is associated with oral microorganisms, such as cariogenic bacteria-Streptococcus mutans (SM). The aim of this study was to determine the antimicrobial and anticariogenic effect of chlorhexidine varnish (Cervitec®) in children. Material and Methods: The study included 70 children with mean age 2.5±0.6 years, divided in two groups (test and control group). S.mutans colonies, plaque index and dmfts index were evaluated after one year of monthly application of Chlorhexidine varnish. Application and instructions were based on the Instructions for Use (Ivoclar/Vivadent). In our study we applied Cervitec varnish which contained Chlorhexidine acetate 1% and Thymol 1%.

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OP 004 GENDER DIffERENCES IN ORAL hEALTh BEhAVIOUR AND ATTITUDES AMONG fIRST yEAR DENTAL STUDENTS Authors Kadriye Peker*, Omer Uysal**, Gulsin Bermek* *Department of Dental Public Health, Faculty of Dentistry, Istanbul University, Turkey **Istanbul University, Cerrahpasa Medicine Faculty, Department of Biostatistics, Turkey Introduction: Oral health attitudes of dental students affect their oral self care and influence their patient's ability to take care of their teeth. Purpose: To determine the difference in oral health behaviour and attitudes between male and female first year dental students at the Dental Faculty of Istanbul University. Material and Method: After testing validity, the Turkish version of the HU-DBI was distrubuted among 165 first year dental students. The response rate was 92 %. Chi square test and independent sample t test were used for statistical analyses. Results: There were no significant differences in HU-DBI score between gender (p>0.05). Bleeding gums were reported in 67 % of the participants, 81 % believed that wearing dentures in old age was inevitable, and 88 % thought that their teeth were getting worse despite daily toothbrushing. Male students worried more often about bad breath (p<0.01), believed that they were able to clean their teeth without toothpaste (p<0.01), did not feel that they brushed well unless with strong strokes (p<0.01) compared to female students. More female students were told that they brush their teeth well by dentist(p<0.05), reported that they had never received any professionally oral hygiene instruction (p<0.01) compared with male students. Conclusion: Although there were no significant differences in HU-DBI score between gender, this study showed that male students had lower awareness and positive attitudes concerning oral health compared to female students. A compherensive programme should be planned to improve the students' oral self - care behaviour.

Purpose: The aim of this study is to present commonly abused types of substances, signs of substance use (psychological, physiological, oral manifestations). Several clinical cases of different type drug addiction are reported and their major dental aspects are discussed. Material and Methods: Patients with different type drug addiction (Heroin,Cocaine, Methamphetamine and Marihuana) are subject of dental examination (clinical and rentgenological). Results: Oral status: Rampant caries with atypical lesions localization. Missing or severe destroyed teeth. Poor oral hygiene, gingivitis/parodontitis, hyposalivation, soft tissue lesions and parafunctions. Conclusion: Accelerated tooth decay, xerostomia, excessive bruxism, oral lesions, undesired drugs reactions (anesthetic/ narcotic), potential virus infection (HIV, HBV etc), aggressive behavior are part of a problems accompanying drug addicted patients. Dental professionals must recognize the different type addictions and the risk factors associated with their deleterious oral effects. This knowledge will allow appropriate and effective preventive and treatment strategies for these patients. Periodical oral health control is recommended in order to avoid relapse. Dentists should also support patients in seeking needed medical care and counseling.

OP 006 ORAL hyGIENE - PRECONDITION Of ORAL hEALTh Authors Vukica Zdravkovic, Zoran Mandinic, Jasmina Tekic, G. PuleticLukic Colgate Palmolive Adria - Belgrade, Serbia Oral hygiene is a group of measures used for cleaning oral cave from bacteria and dental plax which cause caries and periodontopathy which, together with correct feeding, make necessary basis for protecting the health of mouth and teeth. The aim of this paper is evaluation of preventive work and state of oral hygiene with 18 of age. The questionnare was completed by anonimous people. The state of oral health was, estimated by plax index according to Sinles-Lou. The range of caries is expessed by DMF structure. The results of the questionnare show that 75.6% keep their mouths and teeth clean (clean them twice or more times a day); 13.7% clean their teeth once a day; 10.7% clean them sometimes; 51% of them do not use dental floss for cleaning their teeth; 65.8% of them do not use mouth rinse; patients usually visit their stomatologist when they find changes on their teeth or as settled with the dentist; 45.6% of them eat candy and drink sweet beverages during the day. The structure of DMF was D=12.25%; M=3.12% and F=84.63% and DMFT=4.8. Highly present prevalence and incidence of caries show that intesive prevention and education, in how to have healthy teeth, are necessary among 18 of age population to help them to have completely healthy mouth and teeth.

OP 005 ORAL fINDINGS IN DRUG ADDICTED PATIENTS. Authors Georgi Tomov, Snejana Tsanova, Maria Manolova, Vesela Stefanova, Iva Stamatova, Bogomil Andonov Faculty of Dental Medicine, Department of Operative Dentistry and Endodontic, Medical University, Plovdiv, Bulgaria Introduction: Substance abuse (chemical dependence) is often a silent, but pervasive problem in today\'s society. Chemically dependent people come from all components of society, regardless of financial status, ethnicity, or age. However, dental aspects of these addictions are slightly known to dental professionals.

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OP 007 PREVENTION Of DIABETIC PATIENTS IN ORAL SURGERy Authors Almagkout P., Sotiri V., Pissogianakis A. General Hospital Of West Attika, Greece

OP 008 ThE BEhAVIOR Of ThE INDIVIDUALS AND ITS RELATION TO PREVENTIVE DENTISTRy Authors P. Alamgkout, V. Sotiri, A. Pisogianakis General Hospital Of West Attika

Introduction: Diabetes mellitus is a common metabolic disorder resulting from defects in insulin action, insulin production, or both. Insulin, a hormone secreted by the pancreas, helps the body use and store glucose produced during the digestion of food. Characterized by hyperglycaemia, symptoms of diabetes include frequent urination, increased thirst, dehydration, weight loss, blurred vision, fatigue, and, occasionally, coma. For the clinical dentist it is very important to find out through the medical history, the diabetic patients. The diabetic patients with uncontrolled diabetic mellitus are in great risk during a dental treatment. The oral cavity, is a great entrance for the microbes during a surgical procedure. This microbes can create a great infection in the facial region such as the nasal and ophthalmic cavity, the base of the cranium or they can spread through the blood stream to other organs such as the heart causing serious endocarditic. Most of the diabetic patients are so susceptible to oral infections that caused by millions of microbes that live in mouth naturally. But with increasing of blood sugar these natural microbes turn into dangerous and fatal micro organism. Diabetic patients are more susceptible to gingival and teeth infections, and that\'s because of the weakness of the organ immunity. Aim of the research: The aim of the research is the diagnosis of patients with diabetic mellitus and the special treatment that the dentist should follow through a dental surgery in the oral cavity. Results: There are several simple strategies dental professionals can use to manage a diabetic dental patient. It is important for clinicians to assess glycemic control at the initial appointment. In general, morning appointments are advisable since endogenous cortisol levels are generally higher at this time. The less invasive surgical procedure should be followed and Aseptic conditions are of great importance. Patients with poorly controlled DM are at greater risk of developing infections and may demonstrate delayed wound healing. Acute infection can adversely affect insulin resistance and glycemic control, which, in turn, may further affect the body's capacity for healing. Therefore, antibiotic coverage may be necessary for patients with overt oral infections or for those undergoing extensive surgical procedures Conclusion: Diabetes mellitus can have a significant impact on the delivery of dental care. It is important for dentists to be familiar with the medical management of patients with DM, and to recognize the signs and symptoms of undiagnosed or poorly controlled disease. By taking an active role in the diagnosis and treatment of oral conditions associated with DM, dentists also may contribute to the maintenance of optimum health in patients with this disease.

Introduction: The factors that causes dental diseases can be classified in two categories: The factors related to the behavior of the individuals(frequent consumption of sugar) and the ones that have no relation to the behavior of the individual. The second category includes environmental factors such as pollution of the air, water and factors related to the health system(ex supply of equipments, good health education e.t.c). The environmental and the organization factors can be influenced from the behavior of the persons through activities such as initiation of a team for water fluoridation. On this category,there are other factors called individual ones such as hereditary background, sex, age, level of intelligence and others, not influenced by the behavior of the person. Aim: The aim of this research is to make the dentist to create and propose a preventive program of oral health that will fit better to the habits and behavior of each specific patient. Conclusion: There is no preventive dental program that can fit to all patients. The preventive dental program should be based on the needs of each patient separately. We should also consider the behavior of each patient and his ability to adjust himself on the instructions that will be given to him for oral hygiene. The dentist should adjust the preventive program to the habits, character, hereditary tension for caries and make an objective preventive dental program.

Oral Presentaions

OP 009 ThE ROLE Of ORAL hEALTh PROMOTION IN NATIONAL PROGARM fOR PREVENTION Of ORAL DISEASES IN SERBIA Authors M. Carevic, M. Vulovic School of Dentistry University of Beograde, Serbia Health promotion is defined as "The process of enabling individuals and communities to increase control over the determinants of health and thereby improve their health, representing a mediating strategy between people and their environment, combining personal choice and social responsibility for health to create healthier future" (WHO 1984). In those terms the role of oral health promotion in "National program for prevention of oral diseases in children and adolescents up to age of 18 in Serbia" has to be based on Creation of supportive environments to ensure physical and social conditions which will maximize the possibilities in leading healthy lives ("make healthy choices the easy choices"); decision-makers to understand and support oral health promotion, strengthening community action (water fluoridation, oral health campaigns etc.); building healthy pub-

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lic policy by ensuring that all organization must take account of the potential health effects of the policies they develop and implement (legislature economy, educational system, medias, etc.), developing personal skills so that individuals as well as communities can undertake action to improve their health; reorientation of health services to expand their activities beyond the provision of clinical services to address the health needs and move towards the goal of health gain and etc.. There fore Health promotion involvement in National program must introduce holistic approach in health, connecting individuals and community needs to improve health. It is qualitative new approach which is different from old one (primary therapeutic oriented) represented by limited medical model of "disease treatment" with new approach "to maintain health".

OP 011 ACCESSIBILITy Of ThE DEfECT AREA Authors Ceyhun Canpolat, Ender Kazazoglu Yeditepe Uni. Faculty Of Dentistry, Turkey In cases where there is a bone defect, overlying gingiva also lacks. If the defect area is in the anterior region, clinician has to overcome an aesthetic challenge. The first thing that appears in mind is the use of gingiva-colored porcelain (case 1). Achieving acceptable esthetics brings along the disadvantage of an unaccessible area that will cause hygenic problems. To overcome this problem, prosthetic gingiva can be attached to the framework of the fixed restoration with precission attachment (case 2).

OP 010 IMMEDIATE IMPLANT LOADING WITh OVERDENTURES VERSUS PROSThETIC REhABILITATION By IMMEDIATE COMPLETE CUSTOMARy DENTURES Authors Postic Srdjan1, Galeos Minas2

1

OP 012 ALTERNATIVE APPROAChES IN DESIGNING CAD/CAM fRAMEWORKS fOR CERAMOMETAL fIXED PARCIAL DENTURES Authors Aris-Petros Tripodakis, Meindani Maria, Ravanis Paraskevas, Andritsakis Panagiotis, Goussias Hercules Kapodistrian University Of Athens, Greece Introduction: Digital technology provides frameworks for ceramometal restorations using CAD/CAM techniques. To start with the dentist provides a conventional impression that is used to produce a working model with removable dies that are digitally scanned. The dental technician can design the framework in two ways: a) conventionally with wax on the mounted models on the articulator to be scanned in a second stage or, b) digitally directly on the scanned mounted models. Purpose: The purpose of this presentation is to present the different approaches in designing CAD/CAM frameworks for fixed partial dentures using the facilities of the Cad software and critically evaluate them presenting their advantages and disadvantages. Materials and Methods: Two different laboratory procedures of producing the same three unit anterior partial denture were used. The first one was modeled in wax prior to scanning and the second was directly digitally designed on the scanned mounted models by the CAD software. Results: The conventionally designed framework with wax appeared to be more controllable, due to the established experience and skills of the dental technician. More over the fact that the technician in charge was using the digital facilities of another technician, by modeling the framework in wax prior to scanning, the full responsibility of the design remained in his hands.

Clinic of Dental Prosthetic, The Faculty of Stomatology University of Belgrade, Serbia 2 Private practice Mykinon 9 Kalithea, Greece Aim: The aim of this study was to assess immediate loading of implants with overdentures versus positioning of immediate complete customary dentures onto supporting tissues with no implants, on the basis of clinical evaluation of edentulous patient's mouth. Materials and methods: The material were 9 edentulous patients - 6 patients with no implants which were rehabilitated with acrylic immediate complete dentures (CD), designed and fabricated in common manner, and 3 patients for which the overdentures were fabricated for immediate implant loading. Clinical situations and the success of therapy were analyzed on the basis of inspection, probing and subjective impressions of these patients regarding esthetic, speech and ability to chew a different foods. Differences and specifics of CD fabrication in such a diverse situations in the mouths were analyzed, too. Results: This study has shown that in spite of up-to dated recommendations of immediate implant loading with overdenture, a many of objective clinical situations based on the factual condition of supporting tissues would have imposed the necessity of positioning of immediate customary acrylic CD. For the significant number of patients with no implants -65%, the quality and a more accurate procedure of denture fabrication was provided, respecting the axis of rotation of condyles (Facebow Artex, Austria and Teleoptik Ziroskopi, Serbia) and occlusion (Hanel, 80µ). Conclusion: Immediate implant loading with overdentures and prosthetic rehabilitation with conventional acrylic immediate CD should be considered as the equivalent restorative prosthodontic procedures that could be applied in appropriate - ultimately limited clinical situations in a mouths of edentulous patients.

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Conclusions: Conventional wax modeling prior to scanning of CAD/CAM frameworks appears to provide the best control on the produced design. Digitally produced frameworks promise to combine quality with a simplified approach once the technical learning curve is overcome. At the same time, the technician digitally designing the restoration should be equally responsible for the final result.

In esthetic dental treatments lasers may be used for crown lengthening, recontouring of the gingival margin, etching of the enamel before fixing the prosthetic construction, gingival retraction for impressions, osseous recontouring for crown lengthening. Many autors recommend application of different kind of dental lasers which depends on the clinical case. Our aim was to analyze the application of the Er- Cr: YSGG and diode lasers in esthetic dentistry. Materials and methods: During the period of 24 months, in private dental practice in Sofia, Bulgaria, 70 patients were treated with Er-Cr: YSGG laser (Waterlase, Biolase) with wavelength 1280 nm before prosthetic treatment, 50 patients were treated with diode laser (Galbiati, Italy) - 880 nm. With the Er- Cr: YSGG laser were made procedures on hard, soft tissues and bone. With the diode laser were made procedures on the soft tissues. Results and discussion: From the executed esthetic procedures 20% were crown lengthening, 14% - removing on tissues (papillectomy,frenulotomy, etc..), 30%- retraction of the gingiva for impression, 11%- etching of hard dental tissues before placing the prosthetic construction, 12% for gingival contouring, 11%- implant recovering, 2%-removing of gingival colouреd tissues.

OP 013 ALTERNATIVE VENEERING fRAMEWORKS

APPROACh

ON TITANIUM

Authors Goussias Hercules, Ravanis Paraskevas, Meindani Maria, Andritsakis Panagiotis, Tripodakis Aris-Petros National And Kapodistrian University Of Athenes, Greece Introduction: Titanium and its alloys have been alternative substructure materials for metal-ceramic restorations due to their excellent biocompatibility, mechanical properties, good corrosion resistance and low cost. Recently new veneering materials for Titanium frameworks have appeared in dentistry because of failures that occur in Titanium-ceramic bond. Purpose: The purpose of this oral presentation is to demonstrate the veneering composites used in our days for Titanium applications instead of low-fusing porcelains used so far. Materials and methods: A review of the literature was carried out seeking evidence for the characteristics and properties of veneering composites used with Titanium frameworks. MEDLINE and PubMed have been the main sources of search with a focus on evidence-based English language literature. Our clinical trials have also been evaluated. Results: The research of literature and the clinical trial reveals that veneering composites have adequate bond with Titanium frameworks. Their aesthetics is close to the natural tooth. Their occluding surfaces, compared to other dental materials are "friendlier" to the opposing dentition. Main advantage of veneering composites is their reparability inside the oral cavity, their high polishability and their biocompatibility. Conclusions: Despite all properties of veneering composites more research and clinical applications are needed in order to evaluate and evidence the advantages and the clinical behavior of these materials through the time.

Oral Presentaions

OP 015 CORRELATION BETWEEN TMD ChRONIC PAIN DEPRESSION AND SOMATIZATION IN WOMEN Authors Nedeljka Ivkovic*, Djordje Bozovic*, Dragica Stojic**,

AND

*Department of Prosthodontics, Faculty of Medecine, University of East Sarajevo, Republic of Srpska, Bosnia and Herzegovina **Department of Pharmacology, Faculty of Stomatology, University of Belgrade, Serbia Objectives: This study evaluated the correlation between chronic pain and depression and somatization in women with temporomandibular disorders (TMD). Materials and Methods: The investigated group of patients included 28 women (mean age 24,1+4.0), who were seeking treatment in the Department of Prosthodontics at Faculty of Medicine, Foca, Republic of Srpska, Bosnia and Herzegovina. In all subjects Research Diagnostic Criteria for TMD (RDC/TMD) proposed by Dworkin and LeResche (J Craniomandib Disord: Facial and Oral Pain1992;6:301-355) were conducted as diagnostic criteria. Grade of chronic pain and related disability, depression and somatization scores were measured with the subscales of the Symptoms Check List (SCL-90) (J Craniomandib Disord: Facial and Oral Pain1992;6:301-355). Data were subjected to analysis of Spearman's correlation at significant level of p< 0.01.

OP 014 ANALySIS Of ThE USE Of ER-CR: ySGG AND DIODE LASER IN ESThETIC DENTISTRy Authors Filtchev D., Pancheva N., Ruseva E. Center of dental Medicine, Sofia, Bulgaria

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Results: The obtained results showed significant correlation between grade of chronic pain and related disability and depression as well as grade of chronic pain and relate disability and somatization in women with TMD. The significant correlation also existed between depression and somatization scores. Conclusion: The results suggest that women with TMD, with higher grade of chronic pain and related disability, are more depressed and somatized.

Authors Stojan Katzarov PhD., Metody Abadjiev PhD. Institution: Faculty of Dental Medicine Plovdiv, Bulgaria; Faculty of Dental Medicine Varna, Bulgaria Metal-free restorations are becoming more and more popular. They are preferred because of their perfect appearance as an alternative of the metal-ceramic crowns. Although all ceramic crowns are known for a long time ago, restoring non vital teeth is still a challenge for the inexperienced practitioner. One of the most popular difficulties is to be taken the right decision for the right core build up. The utilization of build-up with inappropriate color can lead to undesired results. Dental ceramics is very brittle and mostly requires an adhesive bonding to the core. Almost all of the luting agents are incompatible with moisture. That's why it is recommended to make metal free restoration over teeth with supragingival defects. The purpose of that study is to introduce a fabrication of allceramic crown on severely destructed canine, restored with a modified metal-ceramic dowel core. OP0 18 IN VITRO EVALUATION Of ShEAR BOND STRENGTh Of VENEER CERAMICS TO ZIRCONIA BASED fRAMEWORKS Authors Zeynep Ozkurt, DDS, PhD; Ender Kazazoglu, DDS, PhD Yeditepe University Faculty of Dentistry Department of Prosthodontics, Turkey Problem: Bond strength between veneer ceramics and zirconia frameworks is the weakest component in the layered structure, so that veneer chipping or cracking are possible. Purpose: The purpose of this study was to investigate the shear bond strength of different veneer ceramics to zirconia core materials. Materials and methods: Four zirconia framework materials (ZirkonZahn, Cercon, Lava, DC-Zirkon) were selected and standardized specimens were fabricated. Thirty cores from each zirconia system were divided into 3 groups (n=10). Specimens received 1 of 3 different veneer ceramics: IPS e-max Ceram, Vita VM9 and manufacturer recommended veneering ceramics. Shear bond strength test was conducted and a shear load was applied until fracture occurred. One-way ANOVA and Tukey's HSD tests were used to analyze the data. Results: DC-Zirkon- Triceram showed the highest (40.49 ± 8.43 MPa) and Lava- Vita VM9 showed the lowest (18.66 ± 2.73 MPa) values of shear bond strength. When evaluated the bond strength differences between zirconia cores and their corresponding veneer ceramics, a statistically significant difference was found (P<.05). The DC-Zirkon was found to have the highest bond strength (40.49 ± 8.43 MPa) than Cercon (20.19 ± 5.12 MPa), Lava (27.10 ± 2.72 MPa) and ZirkonZahn (24.46 ± 3.72 MPa) cores. DC-Zirkon and Lava zirconia frameworks showed the highest shear bond strength values with their correspond-

OP 017 fINITE ELEMENTS ANALySIS Of DENTAL AND ZyGOMATIC IMPLANTS IN MAXILLARy DEfECTS Authors Fatih Mehmet Korkmaz, Suat Yalug, Mustafa Kocacikli Karadeniz Technical University, Faculty of Dentistry, Department of Prosthodontics, Turkey The distribution of stresses in the bone around dental and zygomatic implants with obturator prosthesis in maxillary defects have not been thoroughly investigated. The aim of this study was to evaluate stress distribution in the bone around dental and zygomatic implants in an unilaterally maxillary defect which was reconstructed using an obturator prosthesis. A-

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OP 016 fABRICATION Of ALL-CERAMIC CROWN ON SEVERELy DESTRUCTED CANINE, RESTORED WITh A MODIfIED METAL-CERAMIC DOWEL CORE (CASE-REPORT)

three dimensional finite element model of the human unilaterally maxillary defect and zygomatic bone were constructed from CT (ILUMA CBCT Imtec Imaging, Oklahoma, USA). Implant and superstructures were constructed using three-dimensional computer-aided design software. Zygomatic and dental implants were oriented to the defective maxilla in 4 different ways. Bar attachments were preferred for the superstructure. A 150 N vertical force was applied in 3 different ways: First loading was applied to the defective area, second to the uneffected area, and third loading was applied simultaneously to both areas. Von misses stresses in the cortical bone around the implants were then evaluated. Analytical process was performed using Fempro (Algor, USA) Technologies. It was found that placing a zygomatic implant on the non-defective surface markedly decreased the maximum stresses impacting the cortical bone. This study showed that increasing the number of dental implants on the non-defective area does not necessarily decrease the maximum stress impacting the bone around the implants. Instead of using multiple implants on the non-defective side, zygomatic implants may be used when it is possible.

Oral Presentaions

Proceedings of BaSS 2009

ing veneer ceramics compared to IPS e-max Ceram and Vita VM9. Conclusions: To prevent delamination and chipping of zirconia-veneered restorations, careful selection of both framework and veneer ceramic materials are essential for maintaining good bond strength.

OP 019 INfLUENCE Of RESIN BASED LUTING AGENT TyPE ON ThE MARGINAL ADAPTATION Of IPS E.MAX GLASS-CERAMICS RESTORATIONS

Authors Res. Ass. Fehmi Gonuldas, Assoc. Prof. Selim Erkut, Res. Ass. Ali Karahanoglu, Prof. Dr. Dogan Derya Oztas Ankara University, Faculty of Dentistry, Department of Prosthodontics, Turkey Objective: The purpose of this in-vivo study was to investigate the effects of different resin based luting systems on the marginal adaptation of IPS e.max glass-ceramic restorations. Materials and Methods: Standardized veneer preparations that extended to dentin were prepared on 40 extracted human premolars. Restorations were luted according to the manufacturers' instructions, using the following luting systems (n=10): (1) ED PrimerII+Panavia F (P), (2) SingleBond2+RelyX ARC (A), (3) RelyX U-100 (U), (4) SmartCem2 (S). All specimens were thermal cycled 1000 times between 5°C and 55°C and then stored in distilled water at 370 C for 1 week. Marginal adaptation vaules of each tooth (µm, before and after adhesive luting) was evaluated using a streomicroscope on four axial walls with 2 measurements on each wall (before and after cementation) obtaining 8 measurements for each tooth. Results: Statistical analysis of the data was performed using the non-parametric test of Kruskal-Wallis and Mann-Whitney test.

Some the registered features included eruption of the incisors and the first permanent molars and the occlusion in early mixed dentition. The results showed 25% of the seven year olds had delayed eruption of the maxillary first permanent molars and 29% - of the mandibular. This tendency can also be observed by children, aged 8-8,5. Delayed eruption by the central incisors was found in 15% in investigated subjects, and by lateral incisors ­ in 18%. There was a general tendency of delayed eruption of the incisors. In development of the occlusion most frequent was the overjet (37,6-48,7%) and the molar Class II in 16,4-23%, with tendency to increase in time. Molar Class III was intermittent and had tendency to decrease (10,7-6%). There were no major discrepancies in the transversal occlusal relationships.However, there was a main tendency of normal overbite (54,3-65,6%). The results of the consecutive clinical examinations show that timely eruption of the incisors and first permanent molars influence the normal development of the occlusion. Most dynamic changes were detected in the saggital plane. In early mixed dentition occlusion can be impacted by numerous pathological factors, thus primary and secondary prophylaxis is crucial for this period.

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OP 021 DETERMINING Of PREVALENCE Of SUPERNUMERARy TEETh IN TURKISh ORThODONTIC PATIENTS Authors Ahu Topkara, Zafer Sari Selcuk University, Turkey Objectives: To define the prevalence of supernumerary teeth in Turkish orthodontic patients taking gender and jaw differences into account. Material and Methods: Cephalometric radiographs of 3135 consecutive patients. The ages of reviewed patients were between 6 and 53. Panoramic radiographs and cast models were used to determine the supernumerary teeth. Numeric and rational values according to genders and jaws were obtained. Differences between the groups were compared using the chi­ square test. Results: Supernumerary teeth were seen in 1.4% of the orthodontic patients. This ratio was 0.94% in females and 2.10% in males. (P=0.007) (p< 0.01) Differences between genders were statistically significant. Considering jaw differences, the ratio of supernumerary teeth existing in upper jaw was 69.7% and in lower jaw was 30.3% and the difference was statistically significant. (p=0.000) While supernumerary teeth ratio in anterior region of upper jaw was 69.7%, the same ratio in posterior region was 30.3% (p=0.001) (p≤ 0.001). As of lower jaw this ratio was 63.64% in posterior region and 36.36% in anterior region. (p=0.201) (p>0.01). The ratio of facing mesiodens cases was 0.15% and all were seen in males.

OP 020 A fOLLOW UP STUDy Of ThE DEVELOPEMENT DyNAMICS By EARLy MIXED DENTITION Authors Petrunov V.; Gurgurieva V.; Krumova V. Medical University - Sofia - Faculty of Dental Medicine - Orthodontics Department, Bulgaria Timely eruption of the upper and lower incisors and first permanent molars is related to the favourable development of the occlusion in permanent dentition. The current study investigated 298 children between 7 and 9 years of age, which received clinical examination and were followed up in 1 year.

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Conclusion: The outcomes of our study were as following; In Turkish orthodontic patients, supernumerary teeth were seen more frequently; 1. In males than females; 2. In upper jaw than lower jaw; 3. In anterior region than posterior region in upper jaw; 4. In posterior region than anterior region in lower jaw. 5. The possibility of Mesio-dens existence is more in males than females.

Aims: The aim of this study was to evaluate the effects lower incisor extraction on anterior occlusal relationship and compare extraction and non extraction treatment groups at finishing using the PAR index and Bolton analysis. Subjects and Methods: Pre and post-treatment dental casts representing mild CIII and CI malocclusions of 60 patients treated by non-extraction (13 female, 7 male), four premolar extraction (13 female, 7 male), and lower incisor extraction groups (13 female, 7 male) were evaluated anterior occlusal relationship using PAR index and Bolton analysis. Score reduction rates of the whole sample and those of individual specialists were calculated. Also Bolton analyses were done. Descriptive statistics, ANOVA, and Tukey HSD were used. Results: According to ANOVA pre-treatment and post-treatment PAR scores were significant difference among the groups (p<0.05). There were statistically significant differences between the non extraction and lower incisor extraction groups, (p<0.05), while there were no significant differences among the premolar extraction /non extraction and premolar extraction / lower incisor extraction groups. The Bolton analysis and ANOVA showed significant differences among premolar extraction/ non extraction (p<0.05) and non extraction /lower incisor extraction (p<0.001) groups for anterior ratio, while significant differences among the premolar extraction / lower incisor extraction (p<0.05) groups and non extraction / lower incisor extraction groups for posterior ratio (p<0.001). Conclusions: Within the limitations of this study the results suggest that Bolton ratio is very important for extraction regime. And lower incisor extraction can be an effective treatment alternative in selective cases.

OP 022 EffECTS Of A REPEATED RAT hEAD IRADIATION ON ThE GROWTh Of ThE SKULL, jAWS AND TEETh Authors Tijana Z. Vulicevcic, Zeljko B. Milosavljevic, Predrag V. Nikolic School of Dentistry, Orthodontic department, Belgrade, Serbia The goal of the study was to examine the influence of the rat head radiation on the growth of craniofacial region. In the experiment, we used the male rats of Wistar breed, 8 days old.The whole head was radiated to one group, to the second group, a 5 mm thick lead was protecting the hypophysis, and the third group was the control one. A radiation was applied at 8 seanses by 3.49 Gy (27.92 Gy), twice a week, every second week. The animals were sacrified when they were 63 days old, at the time of full sexual maturity. The following parameters were measured: 1.) Skull and face widths; 2.) Skull and face lengths; 3.) Frontal and rear height of the skull; 4.) Length of the upper and lower jaw; 5.) Bycondilar widht; 6.) Frontal and rear height of maxilar and mandibular arch; 7.) Upper and lower arch lenghts; and 8.) Lenghts of upper and lower inissors. In the first group all measured values were statistically significantly lower than in the protected and control group. Lower values were at the protected group in regard to the control (but significantly higher than in the first group). Radiation of the head causes slower craniofacial growth and development. The action mechanism is in a direct influence of the radiation upon bones in development and damage of the hypophysis. In the group with protected hypophysis the growth was not significantly lower than in control. Protection of the hypophysis to a direct radiation decreased significantly the lagging in the growth.

OP 024 INTERDISCIPLINARy TREATMENT Of A fUSED LOWER PREMOLAR WITh SUPERNUMERARy TOOTh: CASE REPORT Autors Cengiz Gadimov, Zafer Sari Selcuk University Faculty of Dentistry Department of Orthodontics, Turkey Aim: Dental anomalies can be classified in different groups: anomalies of volume, anomalies of number, anomalies of form, anomalies of position and anomalies by union. Fusion is a developmental anomaly which occurs due to a union of one or more adjacent teeth during development. Fusion may be either complete or incomplete. The tooth may have separate or fused root canals. To describe combined orthodontic and endodontic treatment of a fused mandibular premolar with supernumerary tooth. Material and Methods: The patient was a 15 year old girl seeking orthodontic treatment for the correction of maxillary and mandibular crowding. Clinically, the patient had an Angle Class I malocclusion with an anterior tete a tete bite and a midline

OP 023 EffECTS Of LOWER INCISOR EXTRACTION ON ANTERIOR OCCLUSION Authors Zehra Ileri, Siddik Malkoc, Sabri Ilhan Ramoglu, Faruk Ayhan Basciftci Selcuk University,Erciyes University, Turkey

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deviation of 3 mm to the right at the mandibular dental arch. Radiographic examination revealed skeletally Class I relationship. The panoramic radiograph showed a fused tooth with two separate pulp chambers and two separate root canals connecting in apical third. Maxillary and mandibular fixed appliances (Roth prescription 0,018\" x 0.025\") were used. After initial leveling, fused teeth required nonsurgical endodontic treatment for stripping which was performed below cemento-enamel junction to correct midline deviation and preserve Class I canine relationship. Results: After the endodontic treatment of the fused teeth, the stripping of the spernumerary tooth was performed to establish a Class I canine relationship and to correct midline deviation. At the end of the treatment, the crowding was resolved and positive overjet and overbite was achieved.

OP 026 POSSIBILLITIES Of ThE VACUUM POSITIONERS Authors Miroslava Dinkova and Manol Ivchev Institution: Medical University of Sofia, Dental Medicine faculty, Bulgaria One of the basic requirements to the contemporary orthodontics is the usage of aesthetic appliances, causing slight movements for lining and leveling of the teeth in the arch. The aim of the present research is to describe possibilities to treat cases with low to medium crowding in the frontal segments of the teeth archs using vacuum positioners by moving single or group of teeth Vacuum positioners are applied to treat patients (8 women and 2 men) with low to medium crowding of the frontal teeth(3-7 mm) as a independent method of treatment, in the final stage of treating patients with fixed appliances, when there is a relapse after orthodontic treatment. Possibilities for moving the teeth in the three basic planes are examined: The following clinical protocol was applied: 1. Full orthodontic analysis 2. Treatment plan with defining the number of steps. 3. After taking the impressions, a series of cast set- ups were made and in each of them the teeth were moved with 6 degrees according to the declination 4. Each step includes 3 vacuum positioner with a different width(0,5mm, 0,625mm, 0,75mm) for 4 weeks. The measurements have been made on casts at the beginning of the treatment and before each step. The treatment control has been carried out every 4 weeks. For defining the size of movements was used software - CA, Scheu Dental. The appliances are aesthetic, allow keeping of good oral hygiene, do not destroy the patients social life, reduce the clinical time of the dentist, the treatment effect is fast.

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Conclusions: After the successful endodontic treatment, there was no need for surgical approach. We believe that under normal circumstances, stripping could be performed below cemento-enamel junction and as a result a significantly improved facial appearance with a satisfactory smile and a vastly improved occlusion and increased self-esteem can be achieved.

OP 025 MANEGEMENT Of ThE IMPACTED MAXILLARy CANINE Authors Celiana Toti, Xhina Mulo, Almiro Gurakuqi, Rosela Rroco Facukty of Medicine, Universitary Dental Clinic, Albania The developement of the maxillary canine commences around 4 to 5 months of age and it's the last tooth to erupt in the dental arch. The path of the eruption is long and narrow, and if this fact is associated with other factors like genetics, dento-alveolar discrepancies etc, is more likely to expect an impacted canine. The canine correct position is of a great importance because it provides: - the lateral jaw's movement guide - a perfect esthetics - beautiful smile line. The aim of this paper is how to define the correct position of the ectopic canine and how we can handle clinically different cases of the impacted canine. Conclusion: an early diagnosis, a careful treatment plan and the professional cooperation, are very helpful to achieve the goal.

OP 027 SIGNS AND SyMPTOMS Of TEMPOROMANDIBULAR DISORDERS IN ADOLESCENTS WITh DIffERENT TIPES Of MALOCCLUSION Authors M. Suciu, Krisztina Martha University of Medicine and Pharmacy of Targu Mures, Faculty of Dental Medicine, Romania The purpose of an orthodontic treatment is to provide for each patient an acceptable esthetics and masticatory function. Orthodontic treatment has been variously cited both as a protective and harmful factor in temporomandibular disorders (TMDs) etiology.

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Background: The aim of this study was to evaluate the prevalence of signs and symptoms of TMDs which coexists with different tipes of malocclusions in permanent dentition stage. Methods: A total of 38 (21 females and 17 males) school children age 12­16, completed a questionnaire and were examined clinically. Results: The results showed that 32.9% of the subjects exhibited at least one sign of TMD and females were generally more affected than males. Joint sounds were the most prevalent sign, followed by restricted opening and opening deviation. The amplitude of mouth opening, overbite taken into consideration, was slightly modified. TMJ pain and muscle tenderness were rare. Reported symptoms were headache being the most frequent symptom, followed by pain during chewing and hearing TMJ noises. Difficulty during jaw opening and jaw locking were rare. Conclusions: Our findings show that orthopedic instability may relate to TMDs showed by the prevalence of signs we found at our subjects. Keywords: TMD, pain, masticatory fuction, maloclussion, orthodontic treatment.

Results: Intraobserver consistency was higher in the assessment of anteroposterior position of the maxilla, sagittal maxillomandibuler relationship, upper incisor position, and the vertical dimension. Interobserver consistency showed higher correlation coefficients in the lower incisor position, vertical dimension, gonial angle of the mandible, length of the cranial base and the posterior cranial base angle. No statistically significant correlations higher than R=0,5 have been found between the cephalometric measurements made and visual judgements of the researchers. Conclusions: Intra and interobserver consistency shows variations according to the craniofacial region to be observed. The relationship between visual judgements and cephalometric measurements has been found to be weak.

OP 029 hOW CAN ORThODONTICS CONTRIBUTE PROSThODONTIC TREATMENT PLANNING? Authors Kalimeri N., Topouzelis N.

TO

OP 028 ThE REPEATABILITy AND CONSISTENCy Of VISUAL jUDGEMENT Of LATERAL CEPhALOGRAMS Authors Mehmet Birol Ozel, Berna Ozdemir Ozel, Aysegul Koklu, F. Erhan Ozdiler Karadeniz Tecnical University, Faculty of Dentistry, Department of Orthodontics, Turkey Aim: The aim of this study is to investigate the intra and inter observer repeatability and consistency of visual judgement of lateral cephalograms independent from tracings and measurements and to evaluate the relationships of these judgements with cephalometric measurement values. Materials and methods: 80 cephalograms of patients have been visually evaluated on two seperate occasions and scored on a visual analog scale by 4 clinicians related to anteroposterior position of the maxilla, anteroposterior position of the mandible, sagittal maxillomandibuler relationship, upper incisor position, lower incisor position, vertical dimension, gonial angle of the mandible, length of the cranial base and the posterior cranial base angle. Also cephalometric measurements have been performed on the cephalograms and grouped with respect to the observed 9 craniofacial regions mentioned. Interobserver and intraobserver consistency have been evaluated by intragroup correlation coefficients. Pearson correlation coefficients have been calculated in order to determine the relationship between cephalometric measurements and observer evaluations.

Everyday dental practice often finds the clinician confronted with teeth aligned in a way different than normal. Prosthodontic rehabilitation of such teeth presents certain difficulties. In some cases such teeth might even be extracted, being extremely difficult to incorporate them to the occlusal scheme. Such cases include teeth that are over-erupted or inclined. Furthermore, there are cases where a patient has very few teeth and therefore the use of as many teeth as possible is of major importance to the prosthodontic rehabilitation. Under such circumstances the contribution of orthodontics is very critical. Due to the orthodontic rearrangement of teeth, less teeth are prepared for prosthetic appliances or treated endodontically or even extracted. This way more teeth are retained in the oral cavity, oral hygiene becomes easier and such teeth can contribute, after their rearrangement, in the mouth restoration. It seems that orthodontic contribution offers nothing but gain to the prosthodontic treatment plan.

OP 030 INVESTIGATION Of BOND STRENGTh Of SILICONE BASED SOfT LINING MATERIAL TO DENTURE BASE MATERIAL ACCORDING TO SURfACE TREATMENTS By SANDBLASTING AND LASER METhODS Authors Aysegul Yalcin Unluyol, Engin Kocabalkan Gazi University, Faculty of Dentistry, Department of Prosthodontics, Turkey

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Introduction: Adhesion failure between silicone-based resilient lining materials and PMMA is a commonly encountered problem in clinical practice. Adhesion failure between two materials results in localized unhygienic conditions at the debonded regions and often causes functional failure of the prosthesis. The aim of this study is to investigate the effect of different surface raughening procedures that were applied on heat cured PMMA on adhesion of Molloplast-B soft relining material to base material. Materials and methods: Choosen raughning procedures were sandblasting with alumina particles in two different dimensions and treatment with Er:YAG laser. Before the experiment, all samples were applied thermalcycling pocedure. In this study adhesion strength was evaluated via 180 degrees peel bond strength and shear bond strength tests because of the smilarity with forces that exist in oral environment. The coherence of data dispersion was ascertained via Shapiro Wilk test. The importance of contradistinction in peel bond strength, shear bond strength and surface roughness medians among the groups were assessed by Kruskal Wallis variance test. Results: Mean roughness value obtained from laser was 2.5 - 3 times more than got by sandblasting. The lowest bond strength values were observed in control and laser groups; highest peel bond strength was observed in the sandblasting group with alumino particles in 50 µm dimensions and highest shear bond strength was observed in group sandblasted with alumino particles in 250 µm dimensions. Conclusion: While surface rauhgness formed by sandblasting increasing the adhesion strength, raughness formed by laser unable to increase bond strength and show same effects like in control group.

The aim of the study is to represent an easy laboratory method for restoration of severely destructed molars with short clinical crown. The method combines the advantages of a two part dowel-core, with esthetic metal-ceramic coverage on the core.

OP 032 MARKING ThE POSITION Of ThE EXTRA ORAL CMf PROSThESIS By USING LASER LINER AND DIGITAL IMAGING Authors Mustafa Kocacikli Gazi University Faculty of Dentistry Department of Prosthodontics, Turkey Introduction: Fabrication of an extra oral facial prostheses is as much an art as it is a science. Some steps in fabrication of a prosthesis pattern, require the patient to be present during the procedure, others may be accomplished in the patient absence. Prosthesis must be positioning the same frontal, sagittal and horizontal planes as the normal side. Computer imaging may be used to assist establishment of the correct positioning. Results: Laser liner machine was used the determine the cmf prostheses on the right position and the points of the face landmarks. It was more easy to determine the points than the classical techniques.

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OP 033 REBUILDING CORE fOUNDATIONS fOR EXISTING BRIDGE Authors Evsen Tamam, Bora Bagis

OP 031 LABORATORy METhOD fOR ESThETIC RESTORATION Of SEVERELy DESTRUCTED MOLAR WITh ShORT CLINICAL CROWN Authors Stojan Katzarov PhD., Prof. Hristo Kissov PhD. Faculty of Dental Medicine Plovdiv, Bulgaria Restoration of destructed teeth with a crown, sometimes requires a dowel-core build up. The purpose of the dowel-core is to restore the missing core of the tooth in a proper size and shape and also to provide a stable anchorage. A perfect dowel core for esthetic restoration should outstand with at least one and a half to two millimeters from the opposing teeth. This space will provide the necessary distance for the coping of the metal ceramic crown and the veneering porcelain. In order to provide an adequate space in cases with teeth with very short clinical crown, the clinician is forced to choose between two opportunities: to make a very short core and to compromise the statics or to make a crown with very thin veneering layer and to compromise the esthetics. This can be very difficult in cases with wedging cusps and deep fissures.

Karadeniz Technical University, Faculty of Dentistry, Department of Prosthodontics, Turkey The advantages of this technique are simplicity, low cost, and efficiency. Pre- existing bridge acts like a matrix for reproducing exact copies of abutment teeth that were present during the first building of this bridge. A 55- year- old woman with a complaint of dislodging of her 6 unit fixed partial denture because of fracture of mandibular right canine abutment was referred to our clinic. After periodontal therapy was performed all unsound tooth structures were removed. Then, approximately two thirds of the root canal filling material was removed and the canals were prepared with endodontic instruments. Old reamers were inserted into canals with appropriate length that allows the marginal fit of the bridge and a pattern resin material was prepared and placed into the canals. A wash- type impression material was mixed and placed into the existing bridge. After placing the bridge onto its place, an appropriate amount of putty- type impression material was mixed and placed into a fabrication tray to provide a silicone matrix of final impression of root canals. After that, the base metal alloy replicas of these posts were cast. After casting, radiography was taken in order to ensure that the posts adapt properly. Although this approach was planned temporarily, these posts have been used for ap-

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proximately 3 years. This technique may be useful for extending the clinical performance of the old bridges just before extracting the abutment teeth.

Results: There was only one case with complications and graft loss. In all the other patients, regardless of the technique used, the amount of bone loss was considerably restricted. Discussion: The analysis of the results shows that the biggest amount of soft and hard tissue is preserved when technique with non-resorbable membrane and beta-TCP is applied.

OP 034 REhABILITATION Of AN EXTRACTED ANTERIOR TOOTh SPACE USING fIBER-REINfORCED COMPOSITE AND ThE NATURAL TOOTh Authors Bora Bagis, Ipek Satiroglu, Rukiye Durkan, Fatih Mehmet Korkmaz, S Melih Ates Karadeniz Technical University, Faculty of Dentistry, Turkey Conservative solutions for the restoration of a single edentulous space in the anterior maxilla present an esthetic challenge to the clinician. A 45 year old male patient whose right upper central was planned to be extracted was referred to our clinic to have a conservative, rapid and an economic treatment option by expectations of the patient. After radiographic and clinical examinations, the tooth which would be extracted was decided to be used for the restoration of its own extracted area. The extracted tooth is splinted to adjacent teeth by aid of the grooves and fiber (everStick, Stick Tech Ltd., Turku, Finland) reinforced composite(GC, GC Corp, Tokyo, Japan). After an early and unexpected failure of the restoration, fiber was thickened with another fiber and composite as being modified to fit better to the grooves and was repeated. The restoration satisfied the patient with a good mechanical behavior, aesthetics, and long term durability after 12 months. Restoring the missing tooth area with the tooth itself by using the currently developing adhesive techniques should be considered and selected as the most conservative approach.

Conclusion: All these techniques are easy and applicable by dentists with different qualifications. Many complicated surgical interventions for ridge augmentation could be avoided due to these ridge preservation techniques.

Authors G. Todorov PhD, S. Katzarov PhD, M. Hristozova Medical University Plovdiv, Faculty of Dental Medicine, Bulgaria The soft lining is used as a method that can improve the retention and stability of the removable denture and also as a prevention of traumatic injury or painful irritations of the tissues of the patient. Nowadays the utilization of the polyvinyl-chloride based resins as a relining material is considered as an anachronism. The purpose of the study is to represent some of the special features and characteristics of the polymethyl methacrylate based soft lining material Vertex TM Soft used for relining of removable dentures in different clinical cases. Also are represented some of the basic laboratory procedures and technological curing protocols that are responsible for the connection between the lining material and rigid base of the denture. Assessments are made towards the improvement of the adhesion, comfort and the distribution of the chewing pressure forces. Also are stated some of the facts related with the maintenance and everyday oral hygiene procedures. The results of the study reveal that one of the most significant factors that can provide a reliable and functional stability of such cushion interface in the removable dentures is the strict following of the polymerization protocol procedures.

OP 035 RIDGE PRESERVATION -TEChNIQUES Authors Metodi Abadzhiev, DMD, PhD MU-Varna,Dental Fakultae, Bulgaria Introduction: Postextractional bone loss can reach 60 % in the first few years after extraction. Do we know suitable techniques to prevent it? The purpose is to show easy techniques for limitation of postextractional bone loss. Methods and materials: Different techniques for prevention of postextractional bone loss were applied to 36 patients with age range between 32 and 49 years. Materials are beta-TCP (Cerasorb, 1000-2000 µ), Easygraft, non-resorbable membranes (IMTEC), resorbable membranes (Bio-Gide).

OP 037 STRESS AND STRAIN Of ABUTMENT TEETh DUE TO COMPOSITE CORE BUILD UP ShRINKAGE Authors Tatjana Puskar*, Danimir Jevremovic**, Larisa Blahic*, Dejan Pantelic, Darko Vasiljevic, Svetlana Savic-Sevic, Branka Muric. *University of Novi Sad, Medical faculty- School of Dentistry, Novi Sad, Dental clinic of Vojvodina, Hajduk Veljkova 12, Serbia **University of Belgrade, School of Dentistry, Clinic for Prosthodontics, Serbia

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OP 036 SPECIAL fEATURES AND ChARACTERISTICS Of ThE SOfT LINING MATERIAL VERTEX TM SOfT USED fOR RELINING Of REMOVABLE DENTURES

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Introduction: Polymerization of resin composite core build up has the potential to generate stress and strain of dental tissues of endodontically treated teeth, since a large amount of resin composite is needed to build up the pulp chamber and core portion. Contraction stress as a result of polymerization shrinkage may have a negative impact on the clinical performance of endodontically treated teeth. Purpose: The aim of this study was to determine stress and strain of dental tissues of endodontically treated teeth while polymerization of composite core build up. Materials and method: Strain was measured experimentally, by real time holographic interferometry on the abutment teeth of maxillary central incisors. Stress was determined on the mathematical models using finite element analysis.

fixed in all directions as the boundary conditions. A 300 N static occlusal load was applied to the palatal surface of crown with a 135 degree angle to the long axis of the tooth. The differences in stress transfer characteristics of the models were analyzed. Results: Maximum stresses were concentrated on force application areas for all models (10 MPa). The stress values observed with cosmopost (2.5MPa). were higher than that of everstick (1.6MPa). Maximum stresses were observed at buccal and lingual cervical margins of crown for both Cercon and e.max crowns (5.8 MPa, 5.0 MPa). But the stress values and distribution in e.max were more homogeneous and lower than Cercon crown. Conclusion: The result of this study demonstrated that use of an everstick post in endodontically treated teeth restored with e.max ceramic reduces the values of von Mises stresses on tooth-restoration structure.

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Results: Deformation of dental tissue was determined by counting the interferomentic fringes that appeared during the polymerization process. The deformations were recorded on the coronal dental tissue from 2.25 µm to 8.50 µm.. The maximal deformation appeared at the top of the abutment. The average strain was 4.16 µm. Maximal principal stress was 3,46 MPa, while von Mises stress was 1.3 MPa to 4.15 MPa. Conclusions: Using holographic interferometry it was possible to determine stress and strain of dental tissue while polymerization of the composite core build up. Recorded stress and strain values were low and according to the literature data could not cause failure of endodontically treated teeth.

OP 039 ThE CONTRIBUTION Of SOCIAL PROGRAMS AT ThE GROWTh Of ThE EDUCATIONAL STANDARDS Authors Magda Antohe, Cristina Dascalu, Doriana Forna, Norina Forna The Faculty of Dental Medicine "Gr. T. Popa", The University of Medicine and Pharmacy, Romania The purpose of this study is to present the increase of educational standards at The Faculty of Dental Medicine in Iasi through the application of social programs, with a deep impact on the didactic process. I have also focused on the practical activity of research present at a high percentage in the main disciplines. Methods and Materials: I have taken into account the training of students from the final 2 years, where the number of social programs in our Faculty increased considerably, and assessed the extent to which the educational standards reached our prevision. The last 2 years of study at The Faculty of Dental Medicine in Iasi focus on the students` practical training. Results: The social programs have provided the perfect framework of development for practical activity on a large number of patients with a variety of oral pathology, with different types of general state deficiencies which led to a good practical training at graduation. These programs gave the possibility to acquire phantoms in the position of the patient, the simulation introducing the practical work, which will conclude with a successful clinical finality. The patients' data are kept in electronic files, serving as efficient data basis to create of epidemiologic models, which are bases for the target therapeutic approach. Conclusions: The social programs provide the framework of hand work augmentation and increase the level of professional and vocational training of the students, giving individual identity to the therapeutic algorithm for each clinical entity of dental medicine.

OP 038 STRESS DISTRIBUTIONS IN ENDODONTICALLy TREATED MAXILLARy CENTRAL INCISOR RESTORED WITh DIffERENT POST AND CROWN MATERIALS: A 3D fINITE ELEMENT ANALySIS Authors Asist Prof. Mujde Sevimay, Dt. Ozgun Ozyilmaz, Asist Prof. Oguz Eraslan Selcuk University, Faculty of Dentistry, Department of Prosthodontics, Konya, Turkey Introduction: Restoration of endodontically treated teeth is a common problem in restorative dentistry, related to the fractures occurring in such teeth. It is necessary to obtain appropriate post and crown material to withstand occlusal forces. Purpose: The purpose of this study was to evaluate the influence of different post and crown materials on the stress distribution of the restoration-tooth complex, using FEM. Material and Methods: 3-D FE models simulating an endodontically treated maxillary central incisor restored with 2 different post materials (everstick and cosmopost) and two different allceramic crown materials (IPS Empress e.max and Cercon) were prepared. The nodes of the root surface in the FE models were

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OP 040 CARIES EXPERIENCE Of ThE fIRST PERMANENT MOLARS IN ChILDREN fROM ROMANIAN URBAN AREAS Authors Luca R.,Tanase M.,Chis A. C, Prelipcean DDD, Farcasiu C. Paediatric Dentistry Department, Carol Davila University, Bucharest, Romania Introduction: Some of our previous epidemiological studies on caries in schoolchildren revealed an early carious involvement of the first permanent molar (M1). Purpose: To evaluate the caries experience of M1 in schoolchildren from two industrial urban areas from Romania with nonfluoridated tap water - Moreni (oil industry) and Slatina (aluminum manufacturer). Material and Methods: A cross-sectional study was conducted on schoolchildren aged 6 to 12 years: Moreni sample - 133 children (67 boys), mean age 8.84±1.21, 515 M1 erupted; Slatina sample - 108 children (51 boys), mean age 8.47±1.25, 419 M1 erupted. Subjects were examined in classrooms according to WHO criteria (1988) and the number of sound/decayed/stained/ sealed/filled M1 was recorded. The proportion of sound/decayed/ stained/sealed/filled M1 for the two samples and, separately, for age subgroups (6-7, 7-8, 8-9, 9-10, 10-11, 11-12 years) was calculated. Data were analyzed using dedicated software. Results: Moreni sample: caries free children 21.05%; M1 status: 38.44% sound; 58.64% decayed (20.86% stained, 69.2% occlusal, 9.93% others); 1.16% sealed; 1.74% filled. Slatina sample: caries free children 30.55%; M1 status: 55.13% sound; 43.91% decayed (39.67% stained, 58.69% occlusal, 1.63% others); 0.95% sealed; 0% filled. Generally, in Slatina sample was a higher number of sound M1 and a smaller number of occlusal caries on each age subgroups. Conclusions. The number of caries free molars is low and there are differences in carious experience between the two urban areas. Further investigations are necessary to clarify these differences. Supported by National Research Grant CNMP 41005/2007.

Material and Methods: Patients who suffer trauma to the permanent teeth in the period 2006-2008 were included to the study.Teeth with subluxation, lateral luxation and root fracture were repositioned and splinted with 3 kinds of splints - arch bar and wire, orthodontic wire and composite resin and Ribbond modification splint. Reexamination was performed at 1,2,3,6,12 and 48 month. Results: All the subluxated teeth remain vital during the examined period. Teeth with lateral luxation that maintain their vitality were 78,8%. Internal resorption was not found. External root resorption was found in 3 luxated teeth. None of the teeth with open apex showed complications. Conclusions: The splinting methods proposed for traumatised permanent teeth positively affect healing after traumatic injuries. The number of complications remains low after 2 years of follow-up.

OP 042 INfLUENCE Of DIffERENT LIGTh CURING UNITS ON WATER SORPTION AND SOLUBILITy Of fISSURE SEALANTS Authors Gul Tosun, Yagmur Sener, Esma Yildiz Department of Pediatric Dentistry Aim: The aim of this study was to investigate water sorption and solubility of three different fissure sealant polymerized by quartz tungsten halogen (QTH) and LED light curing unit. Methods: The specimen disks of fissure sealants were prepared using a teflon mold 5 mm in diameter and 1 mm in height and polymerized with the curing units according to the manufacturers' instructions. The specimens were placed in a desiccators and were weighed when a constant mass was obtained (m1). Then they were placed to distilled water at 37°C. After one week storage time, the specimens were weighed. (m2) The specimens were reconditioned to constant mass in desiccators (m3). Water sorption and water solubility were determined. Data was subjected to two-way analysis of variance and Tukey HSD test. Results: There were no statistical difference between water sorption of Clinpro Sealant and Fissurit F (p>0.05). Dyract Seal showed the highest water sorption which was significantly different from Clinpro Sealant and Fissurit F (p<0.05) regardless of the type of light activation source. There were significant differences among water solubility of fissure sealants which were polymerized LED and QTH light curing units (p<0.05). Dyract Seal polymerized by QTH light curing unit were different from the other fissure sealants except for Fissurit F polymerized by QTH light curing unit (p<0.05). Conclusions: Light curing units affected to water solubility of fissure sealants but not affected to water sorption.

OP 041 DIffERENT METhODS fOR TOOTh SPLINTING AfTER DENTAL TRAUMA TO ThE PERMANENT TEETh Authors A. Beltcheva, P. Pechalova Medical University,Faculty of Dentistry,Department of Pediatric Dentistry, Department of Maxillofacial Surgery, Bulgaria Aim: To evaluate pulp and periodontal healing of traumatized permanent teeth fixed with three methods of tooth splinting.

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OP 043 INfLUENCE Of fORMOCRESOL AND fERRIC SULPhATE ON BOND STRENGTh Of ADhESIVE MATERIALS TO PRIMARy TEETh DENTIN Authors Esma Yildiz, Gul Tosun, Seda Can, Zeynep Yegin, Yagmur Sener Department of Pediatric Dentistry, Turkey Resin materials are used in restoration of primary teeth after pulpotomy treatment with formocresol or ferric sulphate in pediatric dentistry. Aim: The purpose of this study was to investigate the effect of formocresol and ferric sulphate on shear bond strength of adhesive materials to primary teeth dentin. Materials and Method: Primary second molar teeth were used to obtain flat dentin surfaces. Specimens were allocated into three groups, each had thirty; one control group and two experimental groups. In experimental groups, teeth were treated with formocresol for 5 min or ferric sulphate for 15 sec. Each group was divided into two groups and Clearfil SE Bond and Adper Singlebond 2 were used. Composite cylinders (Clearfil AP-X for Clearfil SE Bond and Filtek Z-250 for Adper Singlebond) were built on the surfaces. All specimens were stored in water at 37°C for 24 h. Shear bond strengths were evaluated using the instron testing machine running at a crosshead speed of 1 mm/ min. The values were analysed by One-way ANOVA and Two Sample T-Test. Results: There were no differences between control and formocresol or ferric sulphate groups in both Clearfil SE Bond and Adper Singlebond groups. Conclusion: The use of formocresol or ferric sulphate did not effect the shear bond strength of adhesive materials statistically compared with control groups in both Clearfil SE Bond and Adper Singlebond groups.

Altogether 141 eight-year-olds have been examined, 71 boys and 70 girls. Examinations have been done out by one calibrated examiner (kappa score 0,95). Parents have been asked for permission to allow their children to take part in the study. Statistical analysis of the data has show that MIH is the commonest in first permanent mandibular molars, mostly on tooth 36 (26,9%). The prevalence of 12,8% in children in this region in comparisson with revalent data of other researchers (3,6-25%) is relatively hight.Today, only limited data abaut MIH are avialable in literature, although it important clinacal problem in children suffering from MIH.

OP 045 ODONTOGENIC INfECTIONS IN ChILDREN'S Of KOSOVA: PREDISPOSED TEETh Authors Ademaj-Kutllovci Teuta, Begzati Agim Department of Pedodontics and Preventive Dentistry, University of Prishtina, Dentistry School, Prishtina, Republic of Kosova Aim: The aim of this study was to present odontogenic infections in children's from the etiological perspective, respectively the predisposed teeth. Material and Methods: In this study were included 707 children (541 school and 166 preschool children) from Prishtina, Republic of Kosova. In the dental school clinics was determinate the dental status using DMFT index. The statistical significance was tested using Chi-square test for p<0.05. Results: The caries prevalence of the examined children was 94.3%, while the DMFT index was 4.55. The structure of DMF was 68.5% for decayed, 17.7% for filled and 13.9% for extracted/ missing due to caries. The most predisposed tooth in primary dentition was second molar (49.7%) and in permanent dentition it was first permanent molar (66.1%). Odontogenic infections are manifested in clinical appearance of abscess, parulis, cellulitis and flegmona. Conclusions: The untreated molars of the both dentitions are the most predisposed teeth that caused the odontogenic infections. Prevention and early treatment of inicial caries can be associated with lower incidence of odontogenic infection.

Oral Presentaions

OP 044 MOLAR INCISOR hyPOMINERALISATION (MIh) Authors Svjetlana Jankovic, Igor Radovic, Bojana Smrekic Faculty of Medicine, Dentistry, Bosnia and Herzegovina Molar Incisor Hypomineralisation (MIH) represents hypomineralisation of systemic origin teeth, which affect of one to four first permanent molars frequently associated with incisors. Teeth affected by MIH are more sensitive to thermical, chemical and mechanical irritation. Aesthetic treatment of incisors is another problem. The aim of this abstract is to identifi prevalence of MIH in chilfren living on the territory of Municipality Foca (BiH), and to compare with prevalence in other countries, as well as to emphasize the significanse of this problem.

OP 046 ORAL hEALTh STATUS ASSESSMENT INDEX fOR ChILDREN UP TO ThE AGE Of 6 yEARS Authors Kremena Jurieva Nikolova-Varlinkova, Rossitza Ilieva Kabaktchieva Department of Pediatric Dentistry, Faculty of Dental Medicine, Medical University-Sofia, Bulgaria

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Introduction: One of the challenges that pediatric dentists have been facing for the past several years is the assessment of children's oral health status. This assessment relates to a better quality dental care for children. The first step toward meeting this challenge is to define the main oral health status indicators, such as ­ presence of pain, dental status, periodontal status, occlusion, etc. The second step is to develop an assessment tool which will serve as an universal instrument for oral health status assessment of every child dental patient. Purpose: The aim of this study was to develop an oral health status assessment index for children (OHSAIC) up to the age of 6 years based on dentists' judgment. Materials and method: The OHSAIC is derived from a paired preference experiment with one pedodontist and one general dentist acting as judges of children's oral health status ranged in the age from 0 to 6 years. One hundred and six randomly selected patient cases were paired 200 times for each judge. In applying their own professional criteria for oral health indicators, the judges were asked to choose, from each pair of cases, the case that was in better oral health. They were also asked to provide a preference rationale for each decision of either \"slightly better\" or \"much better\" oral health status. Results: The developed OHSAIC measures a child's oral health status by assessing all indicators that contribute to oral wellness. The index generates a series of scores for each patient. The scores include: an overall relative oral health score (on a scale of 0 to 100) and a score indicating the relative loss of points for each of the oral health indicators. Conclusion: The children\'s oral health status assessment index was developed as an integrated measure for the direct appraisal of pediatric patient populations. Unlike other dental indices available to dentists today the OHSAIC includes all aspects of oral health and compares a child's status to predetermined measurements. It gives dentists the objective standards they need to document the dental care delivered by them.

Results: Datas of CPI, radiological findings, DMFT, and PI were presented by descriptive statistics. From total of 120 examinees 18% were healty (CPI 0), gingival bleeding as highest score was found in 38% (CPI 1) and it was the most prevalent condition, changes described as periodontitis (CPI 3 and 4) had 15% of examinees. The most frequent treatment needs were TN 2 (43%) followed by TN 1 (38 %) Radiographic evidence of early signs of alveolar bone loss showed 55% of examinees, 19% had intraosseous defects The average DMFT was 7.58 ± 4.05 and according to average value of PI (1.17 ± 1.12) oral hygiene was poor. PI and DMFT showed significant impact on periodontal condition and positive prediction of CPI values. In conclusion, generally bad picture of oral health urge to create an adequate programme for oral health promotion. Early diagnosis and eliminating of potential risk factors would prevent development of destructive periodontal disease in adults.

OP 048 ASSESSMENT Of DENTAL ANXIETy AMONG PRE-CLINIC DENTAL STUDENTS Authors Bulem Yuzugullu, Ayse Gulsahi, Cigdem Celik, Sule Bulut Baskent University Faculty of Dentistry, Turkey Aim: The aim of the study was to assess the dental anxiety levels of pre-clinic dentistry students and factors which may be related to dental anxiety. Material and Methods: The study was performed on a total of eighty 1., 2. and 3. grade students from Baskent University Faculty of Dentistry students of which 58 were female (72.5%) and 22 were male (27.5%). Students were asked to fill the questionare. The first part of the questionare consisted questions considering age, gender, smoking, visits to the dentist, the first and final dental visit, reason to visit a dentist and teeth brushing habits. The second part consisted of the Modified Dental Anxiety Scale. The comparison of dental anxiety between gender was made using the Mann Whitney U test. Results: Dental anxiety levels were 9.27±3.18 for female and 8.50±2.44 for male and there was no statistically significant difference between gender. (p=0.453) There were only two students (2.5%) who had dental anxiety. The mean age of first dental visit was 7.3±3.1 and the final visit period was 1.2±0.5 years. 83.8% of students had never smoked. While the frequency of dental visits was found to be 53.2%, the primary reason for visiting was diagnosis-control and restorative procedures. The frequency of brushing was 78.8% 2-3 times per day. Conclusion: It is possible to conclude that dental education may play a positive role in prevention of dental anxiety for the group of students in the present study.

OP 047 PERIODONTAL CONDITION AND ETIOLOGICAL fACTORS IN Authors Markovic Nina, Muratbegovic Amra, Ganibegovic Maida Faculty of Dentistry Sarajevo, Dept of pediatric dentistry, Bosnia and Herzegovina The aim: of this study was to assess periodontal condition in adolescents and to investigate relationship between periodontal status, oral hyhiene, DMFT index and sex as well. Possible prediction of periodontal condition by values of Plaque index and DMFT were also tested. Matherial and methods: Methodology followed recommendation of WHO (World Health Organization). The sample included 120 schoolchildren aged 15. The parameters used to measure oral health status were: Community Periodontal index of Treatment needs (CPITN), bite-wings radiology, DMFT, Plaque index by Silness and Loe (PI).

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OP 049 DENTIST\'S CONTRIBUTION IN ThE IDENTIfICATION Of ChILD SEXUAL ASSAULT Authors Stavrianos C.*, Katsikogianni E.**, Stavrianou I***, Tretiakob G** *Assoc. Professor. Department of Endodontology (Forensic Dentistry), School of Dentistry, Aristotle University, Thessaloniki, Greece. **Student of Dentistry. ***Dentist. Aristotle University Of Thessaloniki, Greece Child sexual abuse is a form of child maltreatment with a variety of sexual offences which has intervened widely in modern societies. It is a morbid phenomenon which has turned to be one of the most high-profile crimes, outlawed in every developed country. The purpose of this report is to review the dental aspects in the identification of child sexual assault. The symptoms vary and may be developed either as psychological alteration or as physical signs or as a combination of both. One can notice oral injuries (e.g orofacial trauma) or infections as a sign of a preceded sexual abuse, as the oral cavity is a frequent site of this kind of assault. Oral, perioral and pharyngeal gonorrhea in prepubertal children is another pathognomic sign. Child maltreatment may also affect its behaviour in the dental office. It is common sense that treating a dental patient involves valuation of its general medical condition and not only "looking inside its mouth". Injuries inflicted by one's mouth may leave clues regarding the time and nature of the injury as well as the identity of the perpetrator. The contribution of the dentist can be remarkable as he can be the first person that comes in touch with the child, recognising signs and symptoms of preceded sexual maltreatment. After identifying such conditions he is obliged by the law to refer the child for further and meticulous examination by a specialist doctor and provide the authorities with all the dental and medical documents that he possesses.

SingleBond2+RelyX ARC (A), (3) RelyX U-100 (U), (4) SmartCem2 (S). All specimens were thermal cycled 1000 times between 5°C and 55°C and then stored in 2% methylene-blue solution for 1 week. Teeth were cut horizontally into 3 consecutive sections: and examined for leakage using a stereomicroscope. Results: Kruskal-Wallis and the Mann-Whitney U tests at p<0.01 were used to analyze the leakage score.

OP 051 ThE EffECT Of RESIN LUTING CEMENT POLyMERIZATION MODE AND hIGh-POWERED POLyMERIZATION UNIT TyPE ON ThE ShEAR-BOND STRENGTh Of A LEUCITEREINfORCED fULL CERAMIC SySTEM TO DENTIN Authors Adil Nalcaci, DDS, PhD*, Bulent Uludag, DDS, PhD **, Volkan Sahin, DDS, PhD *** * Department of Restorative Dentistry, Turkey ** Department of Prosthodontics, Ankara University, Faculty of Dentistry, Turkey ***Department of Prosthodontics, Kirikkale University, Faculty of Dentistry, Turkey Statement of problem: High-powered polymerization units reduce the total polymerization time needed to lute ceramic restorations. However, there is little information on how the interaction between different units and different resin luting agent (RLA) polymerization modes affects shear-bond strengths. Purpose: This in-vitro study evaluated the effects of light polymerization (LP) and dual polymerization (DP) modes of an RLA polymerized with different high-powered polymerization units on the shear-bond strength of a leucite-reinforced full ceramic system to dentin. Material and Methods: One hundred twenty ceramic cylinders (3x3 mm) were fabricated from heat-pressed ceramic (Finesse All-Ceramic). Specimen surfaces were abraded using 600-grit silicon carbide paper, airborne-particle abraded with 50-µm desiccant alumina particles, cleaned ultrasonically, etched with hydrofluoric acid gel and treated with a silane coupling agent. One hundred twenty non-carious permanent human molar teeth were embedded in autopolymerizing acrylic resin. Teeth dentin surfaces were wet-ground using 180-grit abrasive disks and etched with phosphoric acid gel. An adhesive agent (Excite DSC) was applied, and ceramic specimens (n=15) were bonded to dentin surfaces with an RLA (Variolink II) in either LP or DP mode and polymerized according to one of four polymerization profiles, as follows: Control Group: 600 mW/cm2 conventional halogen light, 40 s; LED Group: 1500 mW/cm2 LED, 10 s; PAC 10s Group: 1370 mW/cm2 PAC, 10 s; PAC 3s Group: 1370 mW/ cm2 PAC, 3 s. Cemented specimens were subjected to shear loading until fracture using a universal testing machine. A stereomicroscope (x25) was used to identify the mode of fracture. Bond strength (MPa) data was analyzed using two-way analysis of variance (ANOVA) and Duncan's test (=.05).

Oral Presentaions

OP 050 ThE EffECT Of DIffERENT RESIN BASED LUTING SySTEMS ON ThE MICROLEAKAGE Of IPS E.MAX GLASS-CERAMICS RESTORATIONS Authors Prof. Dr. Dogan Derya Oztas, Assoc. Prof. Selim Erkut, Res. Ass.Fehmi Gonuldas, Res. Ass. Ali Karahanoglu Ankara University, Faculty of Dentistry, Department of Prosthodontics, Turkey Objective: The purpose of this study was to investigate the effects of different resin based luting systems on the microleakage IPS e.max glass-ceramics restorations. Materials and Methods: Standardized veneer preparations that extended to dentin were prepared on 40 extracted human premolars. IPS e.max glass-ceramic restorations were luted according to the manufacturers' instructions, using the following luting systems (n=10): (1) ED PrimerII+Panavia F (P), (2)

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Results: Polymerization mode (P<.01), type of light unit (P<.01) and the interactions between the two were statistically significant (P<.05). No significant differences were found between LP and DP modes except for the PAC 3s Group, in which the LP mode resulted in significantly lower shear-bond strength values (10.43±1.02 MPa) than the DP mode (12.88±1.73 MPa). When light polymerization units were compared, the mean shear-bond strengths were found to be greatest in the control group (halogen light), followed by the LED Group, the PAC 10s Group and the PAC 3s Group for both DP and LP modes. The most common failures were adhesive fractures at the dentinRLA and RLA-ceramic interfaces that occurred most frequently in the PAC 3s group.

Introduction: The mathematical model of teeth is the starting point of the finite element analysis of stress and strain of dental structures. Scanning the surface of the desired object is simple and precise procedure for making 3D model. Inner structure of the body can be modeled according to the literature data using programs for solid modeling. Objective: Forming the mathematical model of second upper premolar and molar for finite element analysis. Method: Our method is based on forming 3D models using 3D optical scanner. After scanning procedure stereolitography files were transferred into programs for solid modeling Catia. As inner structures of teeth have a form of a complex geometric objects, they are suitable for modeling in "Catia". After analyzing the literature data the modeling procedure was done dividing inner structures of tooth into simple geometric bodies. Connecting simple geometric bodies together or substricting bodies from the basic bodies, complex geometric bodies- teeth were formed. Solid models were mashed in program for mesh generation and finite element analysis "Catia". Results: After scanning procedure using program for solid modeling and finite element analysis \"Catia\", 3D models of intact teeth: second maxillary premolar and molar were developed. Inner structures of teeth are modeled according to the literature data. Afterwards models were mashed with tetrahedral elements using the same software that could be used for finite element analysis. Conclusion: Mathematical models of teeth made using 3D optical scanner and program for solid modeling and mesh generation are very similar with the real teeth. Models enable calculations of stress and deformation of the dental structures. Finite element analysis provides useful information in understanding biomechanical problems and gives guidance for clinical research.

OP 052 ThE USE Of SPECTROPhOTOMETRIC ANALySIS IN ShADE DETERMINATION Of ALL-CERAMIC CROWNS Authors Mirkovic N, Draganjac M, Jovicic B. Military Medical Academy - VMA ­ Belgrad, Serbia Despite the developments in the field of dental materials, the technique of shade determination has hardly changed over the past 30 years. The patient's expectations regarding the colour of the esthetic restauration must be carefully evaulated as well. Colour-related issues will be immediately percived both by the patient and by his or her social enviroment. A possible solution for most of the problems of dental shade matching would be to create an objective basis for the shade-related findings. A more appropriate method would be to use contemporary colorimetrics and instrumentation systems, which have been the state of the art for quite some time. The high potential of computerized dental shade matching is obvious in the dental office in near future. Technological progress will continue, and the number of computerized systems will grow continuously. The aim of this article was to present "SpectroShade" system of measuring colour of tooth restorations. Key words: Tooth shade, Spectrophotometry, Ceramic dentures

OP 054 BIOACTIVE SURGICAL ThERAPhy IN ThE TREATMENT Of MAXILLARy SEVERE BONE ATROPhy. Authors Prof. Sergio Corbi, DDS. MSC. Imp Armando F. Minciarelli, DDS. Gabriele Matera ANDSh - Nacional Asociation Albanian Dentist, Albania

OP 053 ThE USE Of STEREOLITOGRAPhy fILES fOR ThREE DIMENSIONAL fINITE ELEMENT TOOTh MODEL CREATION Authors Danimir Jevremovic, Tatjana Puskar, Darko Vasiljevic University of Belgrade, School of Dentistry, Clinic for Prosthodontics, Belgrade, Serbia

The surgical bone regeneration techniques in bone atrophies has achieved excellent results; Autologus grafts, however, force the patients to double surgical procedures with unpleasant outcome. The bioactive surgical therapy and tissue engineering, make use of the human tissue bank or recombinant by D.N.A. syntesis products; All these manufactured consist of growth factors responsible for stem cells stimulating. The bioactive surgical therapy and soft surgical treatments semplify yhe procedures for severe bone atrophies treatments, with more comfort and good long term solution for the patients.

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OP 055 BISPhOSPhONATES AND DENTAL IMPLANTS Authors Anagnostou C., Psomiadis S., Kostas A., Zouloumis S., Zouloumis L. Aristotle University of Thessaloniki, Greece Bisphosphonates (BPPs) are powerful inhibitors of osteoclast activity. They decrease bone resorption and they seem to improve bone density. The administration of BPPs is either oral or intravenous. Oral BPPs are used for the prevention and treatment of Osteoporosis and other skeletal diseases such as Paget's disease. Intravenous BPPs are widely used for the treatment of bone metastases, multiple myeloma and hypercalcemia of malignancy. Bisphosphonate treatment raise questions about the success of the dental implants. Osteonecrosis of the jaws is a serious condition which is characterized by exposed bone in the mouth. Many cases of bisphosphonate-associated osteonecrosis of the jaw have been reported including both oral and intravenous drugs. In the most of the cases, intravenous BPPs were involved. Oral BPPs do not significantly affect implant success. A review of the literature revealed only 1 case of oral bisphosphonate use associated with dental implant failure. The management of the patients under oral BPPs treatment should be separated from that in patients under intravenous treatment. There is insufficient evidence that implant placement should be avoided in patients receiving oral BPPs. Contrary to the oral, intravenous BPPs seems to be a contraindication for implant placement.

Conclusion: Minimum invasive sinuslift technique requires certain indications and it is a matter of choice (by the dentist). Postoperative period runs painlessly and with slight soft tissue swelling.

OP 057 PROSThETIC AND IMPLANTOLOGIC REhABILITATION ON SMALL SUBSTANCE LOSS CASES Authors Norina Forna, R. Sader, Y. Commisionat The Faculty of Dental Medicine "Gr. T. Popa", The University of Medicine and Pharmacy, Romania Introduction: The implantologic and prosthetic territory represents a domain of excellence in operations of complex oral-maxillar-facial rehabilitation, and it is materialised during a specific and very important stage included in this complex algorithm. Purpose: The purpose of this study consists of the identification of implantologic and prosthetic methods and techniques used in substance loss rehabilitation, associated with identifying the specific biomaterials in perfect accordance with each case particularities, without leaving aside the bone-tissue deficiency etiology. Material and Methods: A representative number of clinical cases were selected, cases which are relevant for the chosen theme. The possibility of reconstructing the natural parameters of the edentulous alveolar ridge areas is various, starting with augmentation materials of the autogenous and heterograft type biomaterials, including the mixing of these two types of biomaterials, and going to epitheses, which are the best choise for complex substance loss. Results: When it comes to the biomechanical and aesthetic reconstruction of the arcade, in the majority of the cases the implantologic variant was preferred, followed by the fixed or removable prothesis, which were realised either on a separate, post-augmentation stage, or in the same time with the augmentation stage. Conclusions: The importance of the substance loss rehabilitation ­ a stage which is precedent or concomitent to that of implantologic therapy ­ is reflected in the appreciation of the resorption and atrophy process on the edentulous crest level and this appreciation has a definitory influence upon accomplishing the final stage of the clinical case.

Oral Presentaions

OP 056 MINIMUM INVASIVE SINUSLIfT METhODS Authors Metodi Abadzhiev, DMD, PhD MU-Varna, Fakulty of Dental Medicine, Bulgaria Introduction: Laterally accessed classical sinuslift is a heavy surgical intervention that saddles psychologically all the patients. Applying minimum invasive sinuslift methods, we can increase the patients' psychological comfort and facilitate the healing process. Purpose: Minimum invasive sinuslift method is presented introduced. Methods and materials: Patients with hydropneumatic sinuslift and titanium implants. beta-TCP (500-1000 µ). Results: The postoperative period ran painlessly and with slight soft tissue swelling in all the patients. The implants were opened and loaded in terms and there were no complications. Discussion: There are limited indications for the alternative sinuslift techniques. Special skills are also required from the dental surgeon ­ the ability to finish the laterally accessed operation.

OP 058 SOfT TISSUE MANAGEMENT IN AChIEVING hIGh ESThETIC OUTCOME ON SINGLE-IMPLANT RESTORATIONS Authors Djordje Miketic, Milan Uzelac School of Dentistry, University of Belgrade, Serbia

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Background: Dental implants have been considered to be a predictable treatment modality. However, successful implant treatment today, demands the best esthetic outcome along with stability and function of the implant. In order to achieve "perfect illusion" with implant restoration, special concerns have to be given to the peri-implant soft-tissue appearance including ridge contour, biologic width, dental papillae and gingival architecture. Aim: The purpose of this clinical case study is to describe possible solutions and treatment protocols for achieving predictable esthetic results in implant dentistry. Methods: Twelve implants were placed in esthetic region of eight patients in adequate 3D position. Depending on the loading protocol, provisional crowns were fabricated at the time of placement or at the second stage surgery. Once a week, for period of two months, composite material was added on the transmucosal part of the provisional's, in order to shape and in hence the soft tissue contour. Special impression technique was used to precisely translate the achieved peri-implant contour into the laboratory. Custom-made abutments and ceramic crowns were fabricated and cemented. The novel comprehensive index, comprising pink esthetic score and white esthetic score (PES/WES), was applied for the objective esthetic outcome assessment of anterior single-tooth implants. Results and Conclusion: All twelve implants oseointegrated and esthetic outcome analysis, assessed by PES/WES objective criteria, showed satisfying result overall (the mean of total PES/ WES was 14.75±1.48 of maximum 20). Hence, the mean total PES of 7.5±1.09 out of maximum 10, documents the favorable peri-implant soft tissue conditions. Therefore, restorative concept presented in this case study, can be used to achieve predictable esthetic result in single-implant restorations.

Results: 6 months after the surgery, experimental (ADM) and control (CTG) group showed no statistical difference in GR, representing a success rate of 90.7% for ADM and a 91.9% for CTG. No statistically significant difference was observed in CAL and PD among groups either (p>0.05). CTG group still showed a significantly greater WKT gain (3.35±0.49), compared to an experimental (ADM) group (1.92±0.61). Conclusion: Both procedures proved to be efficient in root coverage. However, higher KTW is still obtained with CTG. It has to be mentioned that ADM is associated with less patient discomfort, due to second surgical procedure avoidance. However, further studies on ADM need to be done.

OP 060 APPLICATION EffICIENCy Of PRODONTAX AND CORSODyL IN COMBINATION WITh LASER-ThERAPy, IN TREATMENT Of ChRONIC PERIODONTAL DESEASES Authors Dr. Elitza Ruseva, Dr. Elena Yoncheva, Dr. Dimitar Filtchev Dental Medical Center, Bulgaria The plaque in chronic periodontal deseases has domination of G(-) species and obligee anaerobes,which is resulting in inflammatory process and tissue destruction. High-intensive lasers get into dental practice more and more frequently every day, and give very good results in the treatment of periodontal deseases. Rinsings out with mouth-rinse, containing antimicrobial agents, are often applied in addition to brushing with tooth-paste, in order to help the control of the plaque growth. Aim: The aim of this study is to evaluate the treatment of chronic periodontal deseases with high-intensive laser and the effectiveness of supplying therapy with Parodontax and Corsodyl. Materials and methods: Two groups with 10 patients in each, who have diagnosis periodontitis chronica, were put on the following treatment: group 1- mechanical destruction and elimination of the subgingival bacterial biofilm with high-intensive laser-Er,Cr:YSGG laser; group 2- mechanical destruction and elimination of the subgingival biofilm witth laser + subsidiary therapy with Parodontax and Corsodyl. Results: We registered differences in the process of recovery in the both groups. At the patients from group 2, using Parodontax and Corsodyl for personal oral hygiene, was observed elimination of the indications of gingiral inflammation and the bleeding, as well as reducing the periodontal pocket depth, for shorter period of time, than at the patients from group 1. Conclusions: The results from this study demonstrated the efficiency of Parodontax and Corsodyl in combination with lasertherapy, as very good way for treatment of the chronic periodontal deseases and acceleration of the recovery process.

OP 059 ACELLULAR DERMAL MATRIX VS CONNECTIVE TISSUE GRAfT IN GINGIVAL RECESSION TREATMENT Authors Iva Milinkovic, Zoran Aleksic, Sasa Jankovic, Vojislav Lekovic Perio Department, School of Dentistry, University of Belgrade, Serbia Background: The main objective of periodontal plastic surgery is to achieve predictable and long lasting root coverage with significant level of tissue regeneration. The aim of this study was to evaluate and compare the clinical effectiveness of acellular dermal matrix graft (ADM) with connective tissue graft (CTG) in gingival recession treatment. Material and Methods: Ten patients presenting bilateral single or multiple gingival recessions of Miller\'s Class I or II were enrolled in this study. Experimental site was treated with ADM placed under coronally advanced flap (CAF), while the control site received CTG treatment. The following parameters were recorded at baseline and 6 months postoperatively: gingival recession coverage (GRC), keratinized tissue width (KTW), clinical attachment level (CAL) and probing depth (PD).

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OP 061 ASSOCIATION BETWEEN STRESS AND PERIODONTAL CLINICAL AND DETAILED BLOOD PARAMETERS Authors Meltem Karsiyaka, Ebru Olgun Erdemir Kirikkale University, Turkey Objective: The study aimed to investigate the association between stress and periodontal clinical parameters, biochemical markers and hemogram. Material and Methods: The test group comprised of 16 students participating in a major exam and 14 students (control group) not participating in any exam. Probing depth (PD), clinical attachment level (CAL), plaque index (PI), gingival index (GI), bleeding on probing (BOP), mobility and cortisol, IgG, IgM, IgA levels and hemogram were evaluated. All measurements and samples were collected at one week prior to the exam (baseline) and at the 1st and the 5th weeks after the exam. Results: At baseline in the test group, PI (p=0.001), PD (p=0.010) and the mean corpuscular hemoglobin concentration (MCHC) (p=0.002) were significantly higher than the control group. The number of platelets and the percentage of monocytes were significantly higher in the control group than the test group (p=0.020, p=0.046). At the 5th week the number of platelets was significantly higher in the control group than the test group, whereas the number of basophils was significantly higher in the test group than the control group (p=0.044). Conclusions: In conclusion it could be stated that stress might induce neglect of oral hygiene and according to our results there was no association between stress and the biochemical markers.

cin in the 96-well plates for 72 hours. The cytokines present in the culture media were quantified using an enzyme-linked immunosorbent assay (ElISA) in each case and results were statistically analyzed (ANCOVA, Pearson, Spearman\'s-rho, p<0.05) Results: The overall means of LoA, PD, IL1beta, IL-6 and TNFalpha were (6.8±1.3mm, 6.5±1.2mm, 111.23±143.4, 10.1±16.9 and 5.2±0.2) respectively. There weren\'t significant differences among 3 cytokine concentrations in Aggressive and chronic periodontitis. There weren\'t any correlation among cytokine concentrations and clinical parameters. There were direct statistic correlations between IL-6 and TNF-alpha in both periodontitis (p<0.05) and direct statistical correlations between IL-1beta and TNF-alpha only in chronic periodontitis (p<0.05). Conclusions: Regarding to irritation of bacterial products in both types of periodontitis and synergy among them, especially correlation between TNF-alpha and both IL-1beta and IL-6, TNF-alpha seems to play a more important role, however, future studies is strongly suggested.

Oral Presentaions

OP 063 EVALUATION Of ChLORhEXIDINE GLUCONATE MOUTh RINSE INDUCED STAINING: AN INVIVO STUDy Authors Bora Bagis, Mutlu Ozcan, Esra Baltacioglu, Sedanur Ustaomer Karadeniz Technical University Faculty of Dentistry, Turkey Purpose: The aim of this study is to evaluate the staining effect of chlorhexidine gluconate (CHX) mouth rinse used as a complementary measure for prophylactic purposes after periodontal surgery, on natural dentition. Methods: Central incisor, canine and 1st molar of the maxillary right arch were evaluated for colour change after 3 days, 1, 2 and 3 weeks compared to the baseline measurements in subjects (N=24) who were prescribed to use 0.2% CHX mouth rinse twice daily after periodontal therapy. Colour measurements were performed using an intraoral colorimeter (Shade Eye-Ex Dental Chroma Meter) according to the CIE-Lab colour-space. The colour change (delta E) for each time point was calculated from the mean of three measurements. Data were analyzed using one-way, two-way ANOVA and Tukey's tests. Results: Delta E values did not show significant differences per tooth type (p = 0.873) (two-way ANOVA). No significant difference was found between delta L* (p = 0.070), delta a* (p = 0.169) and delta b* (p = 0.691) values at all time points (oneway ANOVA). Inter-subject variation was also not significant (p = 0.876). Measurements of baseline-3rd day difference showed significantly higher delta E values than those at other time points (p < 0.05) but this change remained non-significant at 1st, 2nd and 3rd weeks (p > 0.05) (Tukey's test). Conclusions: The staining effect of CHX mouth rinse on natural dentition should be expected to be the most in the first few days of use

OP 062 CORRELATION BETWEEN INfLAMATOARy CyTOKINES AND ATTAChMENT LOSS IN AGRESSIVE AND ChRONIC PERIODONTITIS Authors Surena Vahabi, Marjan Aslani SBMU, Iran Objective: The aim of this study was to investigate the possible correlation among Interleukin 1-beta (IL-1beta), IL-6, Tumor necrotizing factor-alpha (TNF-alpha) and attachment loss (LoA) and probing depth (PD) from gingival samples of chronic and aggressive periodontitis. Methods: Clinical parameters including LoA, PD and bleeding index of 11 patients with moderate to advanced periodontitis were recorded and gingival tissue specimens from 12 chronic and 14 aggressive active sites which were harvested from interproximal sites during their routine periodontal surgeries were cultured with Fetal Calf Serum+RPMI+Amphotericin+Gentami

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OP 064 EVALUATION Of PERIODONTAL REGENERATION CLINICALS AND COMPLEMENTARy METhODS Authors Martu Silvia, Forna Norina

By

"Gr.T.Popa" University of Medicine and Pharmacy, Iasi, Romania Abstract: The development of supportive systems for cellular components, polymeric or ceramic in nature, the synthesis and induction of proteins or genes, has seen an unprecedented evolution. Discoveries in material science generate new materials used in periodontal regeneration or inside factors controlled release systems.The establishing of a scientific aspect and a theory based on evidence are necessary for the success of regenerative therapy. Objectives: This prospective randomized controlled clinical trial was designed to compare the clinical outcomes of periodontal surgery with or without the application of a guided tissue regeneration (GTR)/bone replacement material by clinical and microscopic periodontal evaluation. Method: The study was realized on 20 patients who had pair test sites and control sites, with pockets 6 mm and infra-osseous defects with depth 4 mm and width 2 mm measured by probing and X-ray evaluation. At baseline and 1 year following the interventions, clinical attachment levels (CALs), probing pocket depths (PPDs), recession, full-mouth plaque scores and full-mouth bleeding scores (FMBS) were assessed. Also the gain in the clinical attachment was evaluate by electronic microscopy. Results: The values of the clinical attachment level in the test sites one year after treatment were 3.3 _ 1.7mm of CAL, while the control defects yielded a significantly lower CAL gain of 2.5 _ 1.5 mm. Pocket reduction was also significantly higher in the test group (3.7 _ 1.8 mm) when compared with the controls (3.2 _ 1.5 mm). The radiographic gain was ascertained after 12 months. The electronic microscopy evaluation underling that those new materials used in periodontal regeneration offers new cellular perspective in periodontal regeneration biology. Conclusions: This study proves that the topic use of (GTR)/ bone replacement material determinates a gain in the clinical attachment. The results of this trial indicated that regenerative periodontal surgery offers an additional benefit in terms of CAL gains and PPD reductions.

Mental nerve paresthesia (MNP) can be the result of systemic diseases or local factors. Most frequently, MNP occurs as a postsurgical complication following extractions, periodontal or implant surgery. MNP may also occur after endodontic treatment or periapical pathosis and, rarely, due to periodontal infections. Six cases of MNP are presented. The causes of this incidence vary. The anatomic considerations and the pathology of paresthesia are discussed. Case one: The MNP etiology was the implant surgery in the area of left canine (#33), 1st premolar (#34) and 1st molar (#36). It was considered that the cause of the MNP was the proximity of the implant (#34) to the mental foramen. The symptoms of the MNP were eliminated only when the implant of the canine area was removed.

Case four: The cause was an abscess at the area of periodontally compromised mandibular left premolars (#34 & 35). Systemic antibiotics were prescribed before the removal of the calculus. The cessation of the symptoms was accomplished within two days. Case five and six: The MNP resulted from a periapical infection of the 2nd left premolar (#35) and the 1st right premolar (#44). In both cases a CT was performed. The MNP persisted for more than six months.

OP 066 ThE RESULTS Of NIfEDIPINE IN ThE ORAL CAVITy Authors Sotiri Venetia, Almagkout P., Pissogianakis A. General Hospital Of West Attika, Greece Nifedipine is a dihydropyridine calcium channel blocker. Its main uses are as an antianginal and antihypertensive drug and it can couse headace,dissiness, hypotension, peripheral edema,responcive tachycardia.it can cause serious clinical changes in the oral cavity, especially on the gingival. This changes can appear from the first month of the application of the drug. The change is characterized by generalized enlargement of the marginal and interdental gingival, change of color of the gums, and firm appearance of the enlarged tissue. For the upper jaw, the enlargement appears more often at the bucal and palatal surface of molars and premolars and for the lower jaw it can appear in the labial surface of incisors and canines. Aim: The aim of this research is to help the dentist to recognize enlargement of gingiva caused by nifedipine and to show the ways that we can treat this patients

OP 065 MENTAL NERVE PARESThESIA. REPORT Of SIX CASES Authors Mazinis Emmanuel, Efthimiadis Nicolas Aristotle University Thessaloniki, Greece

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Case two and three: The MNP was the result of periradicular periodontitis of 2nd right (#45) and 1st left premolar (#34). In both cases lip numbness persisted more than five months due to close anatomic relationship between the apices and the mental foramen.

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Proceedings of BaSS 2009

Conclusion: It is very important for the dentist to make deferential diagnosis for the gum enlargement caused by nifedipine, other drugs or other no pharmaceutical reasons. For the treatment of the gingival enlargement it is very important to decrease all the local causes of the periodontal inflammation such as plaque, calculus, iatrogenic causes and the surgical treatment of the periodontioum. The non surgical treatment includes the stop or the replacement of the drug, if this is possible, in combination with good oral hygiene.

trix derivates) have provided greater opportunities for gaining new attachment and have improved the preorthodontic conditions for moving teeth into infrabony defects or for vertical movements of teeth with reduced bone support. Material and Method: We studied 26 patients with age between 26-35 years old, with extracted 3.6 and 4.6 from different reasons and second molar rotated and mesialized. Periodontal clinical exam revealed thin gingival tissue of 3-4 mm (21 cases,80,7%) on the mesial surface of the second molar. The treatment for the second molar consisted in fixed orthodontic devices and different uprighting techniques depending on the periodontal status of the patient. Radiographic exam revealed the enlargement of the periodontal space and the resorbtion of the interproximal mesial bone. Results and conclusions: After treatment it was noticed an improving of the gingival tissue status, the reduction of the periodontal pockets with 2 mm and the reshaping of the bone. The benefits and problems of a combined periodontal/orthodontic treatment approach are discussed with respect to preorthodontic mucosal grafting, guided tissue regeneration, loss of interdental gingiva, correction of crowding, reorienting of migrated and flared incisors, and gaining new abutment teeth by distalizing free-end premolars. Keywords: adult orthodontics, GTR technique, crowding, molar uprighting, pathologic tooth migration, premolar distalization.

OP 067 WIDTh Of ThE KERATINIZED GINGIVA IN DIffERENT REGIONS Of ThE MOUTh AND ITS ChANGES WITh AGEING Authors Ivan Mileusnic, Filip Ser Faculty of stomatology Pancevo, Serbia Gingival tissue covers the crest and the upper portion of the alveolar bone. It consists of the free gingival margin, interdental papilla and the attached gingiva. Epithelium of the gingiva is of the stratified squamos type with keratinization in the surface layers. The width of the keratinized tissue is an important factor in the etiology and progression of gingival recession. Insufficient amount of keratinized tissue facilitates negative influences of muscle traction and incorrect brushing techniques on the level of the free gingival margin relative to the cemento enamel junction. The purpose of this study was to investigate the differences in the width of the keratinized gingiva around different groups of teeth in males and females and in different age groups. The width of the keratinized tissue was measured in 29 subjects stratified in three age groups. Teeth were grouped according to their similarity. The data was analyzed using ANOVA and Tukey post hoc analyses. The width of the keratinized gingiva was larger in females than in males (0,346 mm), in the 50+ age group than in <25 age group (0,66 mm). There was significantly more keratinized gingiva in the upper jaw compared to the lower, with no significant differences between the groups of the upper teeth or between the groups of the lower teeth.

Oral Presentaions

OP 069 COMPARISON Of LIQUID ABSORPTION CAPACITIES Of fOUR DIffERENT SUTURE MATERIALS Authors Ersin Huseyin Selcuk, B. Cagri Delilbasi, Ahmet Arslan M. Kemal Sencift Yeditepe University, Faculty of Dentistry, Department of Oral and Maxillofacial Surgery, Turkey Introduction: Suture materials play an important role in wound healing after surgical procedures an trauma, therefore, selection of proper suture is very important. Oral region differs from other body sites due to the constant presence of saliva, specific bacteria flora, high vascularization, as well as its functions related to speech, mastication and swallowing. Purpose: The aim of this study is to compare the liquid absorption capacities of four suture materials which are commonly used in oral surgery. Materials and Method: In this study, multiflament and absorbable Vicryl and PGA, multiflament and nonabsorbable black silk and monofilament and nonabsorbable Prolen suture materials were used. Ten suture materials of each group were measured with their dried weight. All suture materials were submerged in artificial saliva for 7 days then each suture material was weighed daily. Measurement values were evaluated statistically.

OP 068 CLINICAL OUTCOMES BETWEEN ORThODONTICS TREATMENTS TO ADULTS AND PERIODONTIC DISEASE Authors Catalina Elena Danila, Ioana Rudnic, Silvia Martu "Gr.T.Popa" University of Medicine and Pharmacy, Iasi, Romania Aim: There is a wide range of indications for orthodontic tooth movements aimed at improving the prognosis of malpositioned teeth in the mixed dentition and of teeth affected with periodontal disease. New regenerative periodontal treatment procedures (membrane technique, application of enamel ma-

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Results: Statistically significant differences were found among four suture materials in terms of liquid absorption capacity (p=0.0001). Black silk was found to have maximum liquid absorption capacity followed by PGA, Vicryl and Prolen. Conclusion: In conclusion, we suggest further studies about the relations among capillarity of suture materials, bacteria adhesion through wound, physical strength of suture materials and knot integrity.

Conclusions: The decision of making a biopsy on a tissue is still questionable, since the period of the results is quit big, if we consider that the healing of an inflamed tissue with no cancerous background can be performed during this period. The excision of a tissue for biopsy can be done with the help of a scalpel blade or with laser. The use of laser in dental practice gives us a lot of benefits. A number of them are listed bellow: a blood free and clear field of operation, less traumatic tissue, no postoperative bleeding, no suturing, sometimes no anesthesia is needed.

OP 070 AN EXPERIMENTAL MODEL Of OSTEOARThRITIS IN ThE TEMPOROMANDIBULAR jOINTS IN RABBITS Authors Gonca Duygu DDS, Nurhan Guler Assoc Prof, Mehmet Kurkcu Assoc Prof Yeditepe University Faculty of Dentistry Department of Oral and Maxillofacial Surgery, Turkey The aim of the study was to evaluate the use of sodium monoiodoacetate in different concentrations for creating degenerative changes on the rabbit TMJ. Twelve New Zealand rabbits were divided into four experimental groups (n=6 joints). Four concentrations (1.5, 2, 2.5, 3 mg/ml) of sodium mono-iodoacetate were injected into each joint by using arthrocentesis tecnique. Rabbits were sacrificed at 4 weeks and joints were studied by histology and histomorphometric examination. Loss of articular cartilage with progression of subchondral bone lesion was observed on the intra-articular injection of 3 mg/ml sodium mono-iodoacetate at 4 weeks. This study demostrated that sodium mono-iodoacetate, which is known to induce osteoarthritis in the knee joint, was also able to create such damage in the TMJ.

Authors Ceyhun Aricioglu, Gulsun Yildirim, Ercan Durmus Selcuk University Faculty of Dentistry Department of Oral and Maxillofacial Surgery, Turkey Aim: In the present study, it was investigated whether the placement of intra-alveolar paste that includes butamben, iodoform and eugenol in the postextraction sockets of partial bony impacted mandibular third molars is able to influence the postoperative pain. Material and Methods: Hundred patients who required surgical removal of partial bony impacted mandibular third molar were included the study. Patients were randomly divided into 2 groups. Fifty patients were placed intra-alveolar paste (Alvogyl, Septodont, France) in the postextraction sockets and a control group of 50 patients in which no paste were placed in the sockets. The patients who were in control group, were received 550 mg naproxen sodium two times a day for analgesia after the operation. Research group had received no analgesic drug. The patient's pain intensity was measured on 100 mm visual analog scales at 2, 6, 24 and 48 hours after operation. Results: No significant difference was found between the groups in the incidence of pain. Conclusion: The results of the present study show that intra-alveolar paste placement after the surgical extraction of impacted mandibular third molars yielded same pain levels between the research and control groups. When intra-alveolar paste was used, there is no need to prescribe and administer analgesic drugs. It is safe, cheap and effective for pain control after third molar surgery.

OP 071 BIOPSy, A MEDICAL TEST IN STOMATOLOGICAL SURGERy Authors Almagkout P., Sotiri V., Pisogianakis A. General Hospital Of West Attika, Greece Introduction: A biopsy is a medical test involving the removal of cells or tissues for examination. It is the removal of tissue from a living subject to determine the presence or extent of an oral disease. The tissue is generally examined under a microscope by a pathologist, and can also be analyzed chemically. Surgical biopsy requires an incision with the help of a scalpel and is normally is performed in an operating room in sterile conditions. Nowadays the appearance of laser has repplace the use of scalpels. Aim: On this research we introduce the excision of a tissue for biopsy with the help of laser. The way that laser can be useful in biopsy and the advantages and disadvantages that they offer in dentistry.

OP 073 EffICACy Of ThE ANTERIOR AND MIDDLE SUPERIOR ALVEOLAR ANESThESIA USING ThE PALATAL ­ INjECTION TEChNIQUE

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OP 072 COMPARATIVE EffICACy Of BUTAMBEN, IODOfORM, EUGENOL MIXTURE POSTEXTRACTION DRESSING AND NAPROXEN SODIUM ON POSTOPERATIVE PAIN AfTER ThIRD MOLAR SURGERy

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Proceedings of BaSS 2009

Authors Dr. Djordje Pejanovic, Prof. V. Petrovic Faculty of Stomatology Pancevo, Serbia Introduction: Traditionally, maxillary teeth have been anesthetized by administering an infiltration injection on the buccal or labial aspect of the target tooth. In 1998 Friedman and Hochman introduced a new method of anaesthesia of the anterior maxillary teeth by palatal approach. Pulpal anaesthesia of the teeth (from incisors to premolars) is gained by a single application of the local anaesthetic solution in the palatal mucosa. Since the innervation of the lips is not affected the numbness of the lips is avoided. Purpose: This study examined the effect of anterior and middle superior (AMSA) alveolar field block of maxillary nerves using the palatal approach technique and determined the clinical use of this method. Material and Methods: Clinical investigations were performed on 67 patients admitted to the Department of Oral Surgery, Faculty of Dentistry Pancevo. Clinical parameters measured were: period of latency, anaesthetic field, soft tissue numbness and electric pulp vitality testing. Data from each patient were collected and entered into a specialy designed form. Results: The period of latency was 5 minutes in 28 patients (41.8%). The anaesthetic field represented by the clusters of 5 teeth was achieved in 14 (20.9%) patients. None of the patients experienced any numbness of the upper lip. 29 (43.3%) of all patients had maximum pulp testing readings. Conclusion: The technique of anaesthesia of the anterior and middle superior dental nerve by palatal approach proved its efficacy in achieving the needed level of anaesthesia of the anterior segment of the maxilla. It is therefore usable in everyday dentistry. It allows the practitioner to estimate the smile line during intervention. Also, it can be used for various periodontal and endodontic procedures in the anterior maxilla. Key words: efficacy of anaesthesia, anterior maxilla, palatal anaesthesia techniques

patients with an incoming extraction under local anaesthesia. Flamexine® is used in 20mg sachet at the moment of occurrence of pain, after the effect of local anaesthesia wears off. For calculating the results, the patients are to fill in an questionnaire. Alternative analysis is used for statistical calculation of data. The research shows that Flamexine® has good therapeutic potential against postextractional pain, which coincides with other authors` researches. Flamexine® has good effect in patients as a postextractional pain relief medicine.

OP 075 MENTAL NERVE PARESThESIA. REPORT Of SIX CASES Authors Mazinis Emmanuel, Efthimiadis Nicolas, Tsompanidis G Aristotle University Thessaloniki, Greece Mental nerve paresthesia (MNP) can be the result of systemic diseases or local factors. Most frequently, MNP occurs as a postsurgical complication following extractions, periodontal or implant surgery. MNP may also occur after endodontic treatment or periapical pathosis and, rarely, due to periodontal infections. Six cases of MNP are presented. The causes of this incidence vary. The anatomic considerations and the pathology of paresthesia are discussed. Case one: The MNP etiology was the implant surgery in the area of left canine (#33), 1st premolar (#34) and 1st molar (#36). It was considered that the cause of the MNP was the proximity of the implant (#34) to the mental foramen. The symptoms of the MNP were eliminated only when the implant of the canine area was removed. Case two and three: The MNP was the result of periradicular periodontitis of 2nd right (#45) and 1st left premolar (#34). In both cases lip numbness persisted more than five months due to close anatomic relationship between the apices and the mental foramen. Case four: The cause was an abscess at the area of periodontally compromised mandibular left premolars (#34 & 35). Systemic antibiotics were prescribed before the removal of the calculus. The cessation of the symptoms was accomplished within two days. Case five and six: The MNP resulted from a periapical infection of the 2nd left premolar (#35) and the 1st right premolar (#44). In both cases a CT was performed. The MNP persisted for more than six months.

Oral Presentaions

OP 074 fLAMEXINE® (PIROXICAM- BETA - CyCLODEXTRIN) - ThERAPEUTIC POTENTIAL AGAINST POSTEXTRACTIONAL PAIN ­ A RESULTS Of QUESTIONNAIRE Authors Donka Kirova, Emilia Ilieva, Radka Cholakova, Angel Bakarjiev Medical University, Faculty of Dental medicine, Plovdiv, Bulgaria The aim of this research is investigation of the opportunities of the use of Flamexine® as a post-extractional pain relief medicine. A questionnaire was made including 30 clinically healthy OP 076 PRIMARy AND SECONDARy REPAIR Of ThE ORBITAL WALL fRACTURES Authors Zivorad Nikolic, Jelena Jeremic* Klinika za Maksilofacijalnu hirurgiju, Stomatoloski Fakultet, Klinika za Plasticnu i rekonstruktivnu hirurgiju KCS*, Beograd, Serbia

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OP 077 ThE GENERAL ANESThESIA IN DENTAL PRACTICE Authors Sotiri V, Almagkout P., Pisogianakis A General Hospital Of West Attica, Greece Introduction: General anesthesia in dental practice is considered to be important for patients with serious problems such as handicapped, persons with psychological problems, increased stress, allergic persons, and patients that they are not influenced by the local anesthetics. Also it is important for big oral surgeries and for patients with reactive vomiting. This patients usually have a very heavy medical history, such as respiratory and cardiovascular diseases(cardiopathy, valvithopathy, antrioventricular communication)and diseases of the central nervous system, this is way they need good pre-surgical diagnosis and intense supervision during the surgery. The pre-surgical preparation includes: dental clinical examination, panoramic x ray, medical and dental history, cardiological examination, EEG, electrocardiogram, hematological examination(general blood test, prothrombine and coagulation time etc), biochemical examination(glucose level, urea) and chest x ray. The indications to treat dental patients with general anesthesia depends on the behavior of the patient and from medical criteria. The treatment of dental patients with general anesthesia should proceed in the hospital and the dentist is responsible to inform the relatives for the dental treatment plan., for the psychological preparation of the patient, and for the danger and complications of general anesthesia. Aim: The aim of this research is the description and the creation of a program for the preparation of the patient for general anesthesia. Also we will refer to who and when the dentist should treat patients with general anesthesia. Conclusions: The dental treatment with general anesthesia must be proceed in the hospital environment, the dentist should follow the protocol of pre-surgical preparation and it is very important the cooperation between general medical doctors and dentists.

OP 079 fIfTEEN yEARS EXPERIENCE Of INTRALIGAMENTARy ANAESTESIA WITh CITOjECT Author Ekaterina Boteva Department of Conservative Dentistry, Dental Faculty, Sofia, Bulgaria Indications and exclusion criteria for successful application of Citoject and the significant advantage of the method are established. For a period of 15 years 2360 teeth were treated for dental caries, acute and chronic pulpitis, apical periodontal lesions and extractions, with intraligamentary anesthesia. The method was used as a main and only method. The technique was accurately applied with the instrument as required: 30° angle between needle and tooth, 2mm depth, injection for each root in particular point(s) for each tooth. Particular attention was paid on cleaning of the teeth and instrument. On 98% of the cases the method was successful and compli-

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Orbital fractures take part in 10% of head injuries. Pure blow out fractures of the orbital walls are present in 43%. Mechanism of injury is either direct or indirect pressure transfered on the orbital rim and walls.Diagnostic procedure includes clinical examination, Hess Lancaster test, standard radiograms and most recentlz used 3D CT. Surgical repair is a method of choice and comprises open reduction and rigid fixation as well as reconstruction of the bone defects either using cortical bone or cartilage grafts.Various approaches to the orbital walls could be used, but we prefer transconjuctival and transcaruncular. For the last ten years (1998-2007) we had 128 patients that required surgical reconstruction of orbital wall defects. Amongst them, 97 were diagnosed at the time of injury and were mainly reconstructed using cortical bone grafts. The rest of 31 were treated as a postraumatic enophtalmos or orbital deformity, that was not recognized or not properly primary treated. Results obtained by use of this surgical strategy were discussed.

OP 078 ThE INfLUENCE Of RADIATION Of fULL ThERAPy DOSE ON ORAL TISSUE Authors Borka B. Mandic, Bojan D. Mandic Clinic for maxillofacial surgery, Faculty of Stomatology, University of Belgrade, Serbia The protocol for patients with surgicaly treated oral carcinoma demands additional radiotherapy. Postradiational sequels are inevitable and can be early and late, according to the time of their appearance. Research was performed upon thirty patients with surgicaly treated oral carcinoma with an oral cavity defect healing per secundam intentionem. The radiation therapy started within 3040 days after the surgery. Effects of this therapy were followed by early sequels such as erythema, plaque forming, xerostomia, ulceration and haemorrhage, difficulties in speach, mastication and swallowing. Erythema, plaque forming and ulcerations were present in all patients, are reversible and disappear six months after the treatment. Xerostomia appears due to decreased production of major salivary glands, is also reversibile but never disappears completely. Usually, after 6-8 months parotid gland is the quickest to recover. Pain is present in all patients and comes as a result of all previously described effects. It is the strongest at the end of fourth week, and six months after the end of radiotherapy it vanishes almost entirely. Difficult mastication, swallowing and speach are also present in all patients and come as the result of all previously desribed changes.With their disappearance they come back to normal. All patients have a coated and swelled tongue, with changed oral flora and candidiasis present in over 80%. In conclusion we would suggest a necessity of an excellent oral hygiene which helps decreasing the extent of negative effects of radiation therapy.

Oral Presentaions

Proceedings of BaSS 2009

cations were not registered. The failure in 2% is possibly due to the fact that it was in the treatment of Caries media, where the anesthetic effect is difficult anyway. In 17 patients persisting pain was observed for 48h "around the tooth". 75% of all patients declare their approval of the method and wish all operative procedures to be with such anesthetic method, 23% think the method is very good and they want it if they need it and 2% would like another method. Key words: conservative dentistry, dental caries, endodontics, anesthesia

Conclusions: The development of calcium phosphate ceramic for bone graft is one of the promising biomaterials for better control of the complex processes of bone healing processes and regeneration. We suggest that obturation of open apex of calcium phosphate ceramics should be a good alternative method in endodontics. Key words: apical periodontitis, apical obturation, calcium phosphate bioceramics.

OP 080 CALCIUM PhOSPhATE BIOCERAMIC AS APEX fILLING MATERIALS Authors A.Gusiyska*, E. Dyulgerova** * Assistant Professor in Department of Operative Dentistry and Endodontics, Medical University ­ Sofia, Bulgaria **Professor in Department of Operative Dentistry and Endodontics, Medical University ­ Sofia, Bulgaria Introduction: Apical periodontitis is a result of a pulp necrosis, infection in root canal system and manifestation of the host defense response. The latter involves cells, intercellular mediators and antibodies pathological events in apical periodontitis are mainly characterized by dentin, cement and bone destruction in apical zone. The obturation of apical zone is a key problem of endodontics. Materials and methods: The subject of this study were seven clinical cases (seven patients - 4 female and 3 male in ages from 22 -53 years) with radiolucency and radiographical evidence of periapical lesions. Initial examination was found that all the treated teeth were painless without acute exacerbation. Nevertheless more precise clinical analyses fined that five cases were asymptomatic, and two cases presented tenderness to percussion and palpation. А detailed general medical and dental history was obtained from each patient. Periapical radiographs using paralleling technique were taken. The diagnoses were determinate by systematic clinical observations and radiographic analyses using periapical index (PAI) with score 3 4 and 5 by Ostravik. The access cavities was prepared after the application and fixation of the rubber dam. Mechanical root canal instrumentation was performed with rotation NiTi-instruments under irrigation with 2,5% NaOCl, subsequently irrigated with 17% EDTA and 0,9% saline solutions. In keeping with the tissue engineering concept the injectable implant material in this study was used calcium phosphate ceramic mixed with saline solution for biomimethic obturation of the destructed apical zone and for creating a condition for sealing root canal system with sealer and gutta-percha. Results: The results are present in radiographic examination. It may be assumed that radioopacity is a part of calcification process. Our positive results demonstrated that the used bioceramic has a stimulating effect on the healing processes.

OP 081 ChEMICAL ANALySIS AND INVESTIGATION Of PhySICOChEMICAL PROPERTIES Of ELECTROChEMICALLy ACTIVATED SOLUTIONS Authors Ioannidis Konstantinos, Beltes Panagiotis, Lambrianidis Theodoros, Karageorgou Eutyxia, Samanidou Victoria Department of Endodontology, School of Dentistry, Aristotle University of Thessaloniki, Greece Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, Greece Introduction: Sodium hypochlorite (NaOCl) remains the irrigant of choice, despite the main disadvantage concerning cytotoxicity. The need for further investigation of alternative root canal irrigants is requisite. Recently, the main solutions deriving from electrochemical activation procedures have been proposed as alternative root canal irrigants. Purpose: The purpose of this study is the chemical analysis and the investigation of their physicochemical properties, for an observation period of 14 days, in standard storage conditions. Material and Methods: A STEL-10H-120-01(226) device (LET, Moscow, Russia) was used for the harvesting of anolyte and catholyte solutions. Concentrations of available hypochlorite (ClO-), hydrogen peroxide (H2O2) and sodium hydroxide (NaOH) were estimated by iodometric titration, titration with a standard solution of potassium permanganate and acid-base titration, respectively. Additionally, pH and oxidation-reduction potential values were determined. All solutions were stored in standard conditions. Results: After electrochemical activation, the available concentration of ClO-, H2O2, NaOH molecules depended upon the strength of the initial brine solution. Neutral anolyte solutions presented higher values of available ClO- molecules compared to acid anolyte solutions, at all observation periods. Available H2O2 was detected in very low concentrations. Oxidationreduction potential and pH values remained stable during all observation periods. Conclusions: Anolyte and catholyte solutions act as available sources of the same species that provide to sodium hypochlorite antimicrobial and solubilizing properties. Future studies should be conducted for the development of enhanced electrochemically activated solutions, in order to provide a more sufficient source of oxidants and detergent agents.

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OP 082 COMPARISON Of DIffERENT ROOT CANAL OBTURATION SySTEMS IN APICAL ADAPTATION Authors Kamran Gulsahi*, Kerem Askin**, Alper Akcay**, Atilla Atac**, Fugen Dagli-Tasman** *Baskent University, Ankara, Turkey, **Hacettepe University, Ankara, Turkey Aim: To compare apical quality of root fillings completed using warm vertical compaction and cold lateral compaction. Materials and Methods: Forty extracted single-rooted human mandibular teeth were instrumented with System GT Rotary files (Dentsply, Maillefer, Switzerland) and Mtwo NiTi system files (WDW GmbH, Germany) (n= 20 each). Following removal of smear layer, teeth were randomly divided into four groups for filling as following (n= 10);group 1: System GT+cold lateral compaction, group 2: System GT+BeeFill 2in1 warm vertical compaction technique(WDW GmbH, Germany), group 3: Mtwo+cold lateral compaction, group 4: Mtwo+BeeFill 2in1 warm vertical compaction technique. Horizontal sections were obtained every 1 mm up to 4 mm from the apex, using a low speed saw (Isomet 4000,Buehler, USA). Digital color images of sections were obtained at 35x under a stereomicroscope (Leica Microsystems GmbH Germany) and transferred to an IBM compatible PC. Calculation of the cross-sectional canal area (in per cent) filled by material or sealer was performed by use of image processor software (analySIS LifeScience Series). The data were analyzed using Kruskal Wallis and Mann-Whitney U-Tests. Results: There was significant difference in apical filling adaptation between the groups only 1mm (P<0.05) Conclusions: With the combined Mtwo+BeeFill 2in1 warm vertical compaction technique significantly different System GT+ cold lateral compaction group and Mtwo+cold lateral compaction group.

6 mm were prepared. The specimens were stained with methylene blue dye. Each section was digitally photographed under a stereomicroscope and the images were transferred to an IBMcompatible PC. The number of canals as well as the presence and type of canal isthmuses were recorded. Results: In the mesiobuccal root of the maxillary first molars, isthmus morphologies were 34.3% Type I, 14.3% Type II, 2.5% Type III, 27% Type IV and 21.9% Type V. There was no Type III isthmus morphology in the mesiobuccal root of the maxillary second molars when compared to maxillary first molars, however 53.7% Type I, 10.9% Type II, 14.9% Type IV and 20.5% Type V isthmus morphologies were observed. Conclusion: Type I isthmus was the most frequently observed in the both maxillary first and second molars. While Type III isthmus was no seen in the maxillary second molars, frequency of type III in the maxillary first molars was 2.5%. Cleaning the isthmus is a major challenge during root canal treatment. Failure to deal with the isthmus may explain why some posterior teeth do not heal completely following endodontic surgery.

OP 084 NONSURGICAL RETREATMENT Of TEETh WITh fAILED APICAL SURGERy Authors Lambrianidis T., Molyvdas I., Tsompanidis G. Aristotle University Of Thessaloniki, School Of Dentistry, Department Of Endodontics, Greece Introduction: Persistent apical periodontitis after surgical treatment is usually related to the inability to eliminate or at least seal residual becteria in the root canal system denying them access to the periradicular tissues. Surgical failures can be managed by nonsurgical root canal retreatment, surgical retreatment or a combination of both. Purpose: The purpose of this study is to evaluate the outcome of nonsurgical retreatment of teeth with apical periodontitis which had been previously treated by a surgical approach.

OP 083 fREQUENCy AND TyPE Of ThE ROOT CANAL ISThMUSES IN MAXILLARy fIRST AND SECOND MOLARS Authors Kamran Gulsahi, Gokalp T. Karaman, Mete Ungor, Emel O. Onay Baskent University, Faculty of Dentistry, Department of Endodontics, Turkey Aim: To investigate in vitro the frequency and type of the root canal isthmuses in extrected mesiobuccal roots of maxillary first and second molars. Materials and Methods: Hundred first and 100 second maxillary molars were included in the study. The mesiobuccal roots of teeth were sectioned from their crowns and embedded in clear resin.Transverse serial 1-mm-thick sections from the apical

Materials-method: Fifty-four patients with 61 previously surgically treated teeth presenting with persisting apical periodontitis were included in this study. All patients had noncontributory medical history. The teeth were instrumented by means of hand and rotary files, copiously irrigated with 2,5% sodium hypochlorite, a calcium hydroxide paste was used as intracanal medication for at least 7 days and the teeth were obturated with guttapercha and a zinc oxide-eugenol base sealer using either cold lateral condensation or an injectable thermoplasticized gutta percha technique. No antibiotics were administered except in five cases originally diagnosed as dentoalveolar abscess. Patients were clinically and radiographically examined at 3, 6 and 12-month intervals for the first year and for a period of up to 4 years subsequently to assess the outcome of treatment. Results: Overall, 58% of the cases were classified as "healed", 19% "incompletely healed" and 23% were recorded as "failure".

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Conclusion: Non surgical retreatment, if feasible, is a valuable treatment option to resurgery or tooth extraction in cases of teeth with failed apical surgery.

Purpose: The aim of this report is to present cases of complicated furcation perforations treated with ozone prior MTA sealing. Material and Methods: Three patients with symptomatic, chronic, nontreated furcation perforations were included in this study. Rentgenological data obtained indicated resorption in furcation area.The perforation were irrigated with Metronidazole, treated with ozone by CP probe of OZONYTRON (BIOZONIX, Germany) for 30 seconds with 30 000 ppm and sealed with MTA. Results: The X-ray follow-up one year later revealed satisfactory bone recovery. Conclusion: Ozone penetrates through the perforation defects and provides local desinfection. The "oxidation" of the affected bone tissue supports its healing and regeneration. No side effects were observed.

OP 085 OUR EXPERIENCE WITh ThE ND: yAG LASER IN ThE ThERAPy Of ThE ChRONIC APICAL LESIONS Authors Kovacevska I., Dimova C., Georgiev Z., Mitevski A. Institution: Faculty of Dentistry, Department of Cariology & Endodontic Skopje, R. Macedonia

Oral Presentaions

Introduction: The Nd: Yag Laser is used for desinfection and sterilisation of the intracanal space in the endodontical therapy procedure, especially with the chronic periapical lesions. Aim: Our goal was to make clinical and radiographic assesment of the therapeutical effects of the Nd: Yag Laser with the chronic periapical lesions. Study design: In the study, we present 10 cases of single-rooted human teeth with X-ray determined periapical radiolucency. In all of them, during the endodontical therapeutic procedure, the intracanal space was desinfected and sterilised twice with the Nd: Yag Laser. X-ray and clinical studies were made after 3 and then again after 6 months since the beginning of the endodontic treatment in all cases. Results: Out of the 10 tested cases, in 2 patients, after the first laser treatment, subjective simptoms were found and the patients were submited for sugical treatment. The rest of the treated teeth demonstrated positive therapeutical effect during and after the endodontical conservative treatment. Conclusions: With the usage of the Nd: Yag Laser the therapeutical procedure for the chronic periapical lesions is shorter, and there is a significantlly succesfull and positive post-endodontic effect.

OP 087 ShEAR BOND STRENGTh Of NEW RESIN BASED ROOT CANAL SEALERS WITh AND WIThOUT SMEAR LAyER Authors Ali Erdemir, Ali Turkyilmaz, Sefika Nur Akyuz, Husnu Dirikolu Kirikkale University, Turkey Purpose: The purpose of this study was to evaluate in vitro shear bond strength of four resin based root canal sealers (Endo-Rez, Ultradent, USA; Epiphany SE, Pentron, USA; MetaSEAL, Sun Medical, Shiga, Japan; AH Plus, Dentply, Konstanz, Germany) to dentin with and without smear layer. Materials and method: 80 extracted third molars were used in this study. The Occlusal third of the crowns were cut and the exposed dentin surfaces were polished with waterproof polishing papers. Specimens were randomly divided into two groups of 40 teeth each. Smear layer was removed using 17% EDTA followed by 5.25% NaOCl in both groups. To create uniform smear layers, in the second group, dentine surfaces were polished with waterproof polishing papers for 30 seconds. Each group was then randomly divided into four subgroups. Polyethylene tubes were filled with freshly mixed sealer and carefully placed to dentin. The specimens were stored in 100 % humidity for 7 days at 37 oC. Shear bond strength was measured using a universal testing machine at a crosshead speed of 0.5 mm/min. The data was calculated as MPa and statistically analyzed using twoway ANOVA. Results: Endo-Rez groups were showed significantly lower shear bond strength values than the Epiphany SE groups (p<0.05). There was no significant differences between the other groups (p>0.05). The presence or absence of the smear layer was not affected shear bond strengths in all groups (p>0.05). Conclusions: Epiphany SE had the strongest adhesion to dentin. Smear layer had no effect on shear bond strength.

OP 086 OZONE APPLICATION TREATMENT Authors Georgi Tomov

IN

PERfORATION

DEfECTS

Faculty of Dental Medicine, Department of Operative Dentistry and Endodontic, Medical University, Plovdiv, Bulgaria Introduction: The perforation defects in furcation area are difficult for treatment, especially in teeth with infection and already existing bone resorption. Conventional therapy includes irrigation and MTA sealing, but the infection control is problematic. Ozone application in these cases should be beneficial due to its antibacterial effect and minor toxicity.

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OP 088 STUDy Of ChRONICAL PERIAPICAL LESIONS' EVOLUTION AfTER ANTISEPTICAL TREATMENT Authors Constanta Peiulescu, Elena - Cristina Marcov, Narcis Marcov "Carol Davila" Medical and Pharmaceutical University, Bucharest, Romania Chronical periapical lesions may be treated using surgical or conservatory methods.This study intends to investigate that the classical and "old" calcium hidroxyde substances can still make "miracles" in a field which today has surgical domination. Purpose: The aim of this clinical and radiological study was to establish the effects of antiseptical root treatment on different types of chronical periapical lesions. Matherial and methods: 150 cases of chronical periapical lesions (80 females and 70 males, ages between 30 and 65), which were endodontically treated using antiseptic substances with calcium hidroxyde. These cases were clinically and radiologically monitorized every 6 months for a period of 4 years between 2004-2008 in the Department of Restorative Dentistry, Faculty of Dental Medicine, UMF "Carol Davila", Bucharest. The radiographs were obtained using the parallel technique and the results were then statistically evaluated. Results: The clinical signs (negative axial percussion) and radiological images (trabecular bone with improved radiological density) showed a significant improvement of the aspect of the periapical bone in 86% of the cases. Conclusions: The long term calcium hydroxide therapy proved to be efficient in most of the cases included in this study (86%), the rate of healing depending on the initial pathology and the individual features. Key words: chronical periapical lesions, conservatory methods, calcium hidroxyde substances.

presence of exposed bone in the mouth, which fails to heal after appropriate intervention over eight weeks. It is commonly precipitated in patients treated with zolendronate, pamidronate or a combination of these agents. Management strategies need to consider both prevention and treatment of this condition. For patients with malignancy, pretreatment dental examinations are important. In this presentation, the clinical findings and treatment modalities of patients with BROJ will be presented.

OP 090 TRAUMATIC INjURIES Of ThE MAXILLARy ANTERIOR TEETh IN ChILD Authors Peeva M., Pisevska N., Zuzelova M., Jankulovska M, Pavlevska M. University Dental Clinic "St.Pantelejmon", Macedonia Childhood trauma from different origin is the cause of avulsion of the upper frontal (maxillary) teeth as the most exposed in the dentoalveolar ridge. In case of expulsion of the permanent teeth, as far as it is possible, procedure of reimplantation the teeth back into their natural sockets is performed. The therapeutic protocol regarding the matter of teeth devitalization as well as their immobilization, depended on the child's age (completed or incomplete root growth) and the time passed until initial treatment. Authors present a case of trauma due to a car accident in 8 - year old child, during which teeth 11, 21 and 22 were completely pulled out of their sockets (avulsio dentis). The dentoalveolar trauma as well as the inappropriate professional treatment complicated the situation, causing permanent damage with tooth loss and a huge defect in the anterior maxilla, which will cause further repercussions on the quality and quantity of the bone tissue in the affected area. Considering the age of the patient and the limited therapeutic possibilities for restoration of lost tooth, a multidisciplinary approach (oralsurgical;orthodontic;pedodontic) is necessary in order to find the most appropriate solution. The accent on this case is the surgical protocol for preservation and augmentation of the maxillary alveolar ridge, in order to create an appropriate bone volume for further treatment with dental implants.

OP 089 ThE TREATMENT APPROACh Of BISPhOSPhONATE RELATED OSTEONECROSIS Of ThE jAWS Authors Berkem Atalay DDS, Gonca Duygu DDS, Nurhan Guler Assoc Prof, Kemal Sencift Prof Yeditepe University, Faculty of Dentistry, Oral and Maxillofacial Surgery Department, Turkey Bisphosphanates have become the standard of care in the management of patients with cancer involving skeletal metastasis and hypercalcemia of malignancy. They are considered to act on bone resorption by binding to bone mineral and subsequently inhibiting the activity of the osteoclasts. Bisphosphonate related osteonecrosis of the jaws (BROJ) is defined by the

OP 091 TREATMENT KERATOCySTS

MODALITIES

Of

ODONTOGENIC

Authors Ozge Demirkol DDS, Kemal Sencift Prof Yeditepe University, Faculty of Dentistry Department of Oral and Maxillofacial Surgery, Turkey

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Odontogenic keratocyst (OKC) is a tooth originated cyst characterized with an agressive behaviour and high recurrence rate with a reported incidence of 20% to 62%. Radiographically it is seen as radiolucense, well defined lesion which is associated with an impacted tooth in 25% to 40% of the cases. Treatment protocols include enucleation, marsupialization, marginal or radical resection combined with Carnoy's solution or cryotheraphy. The factors that should be taken into consideration while planning the treatment include size and location of the cyst, age of the patient, soft tissue involvement, history of previous treatment and histopathology of the cyst. The aim of this study is to present the treatment modalities of 18 patients (12 males, 6 females) with the diagnosis of OKC. The mean age was age 41.16±18.63 ranging from 17 to 85. Fifteen OKC were located in the mandible and remaining cysts were in maxilla. Radiographically, of 11 were unilocular and 7 multilocular cysts were more frequently in the mandible (6 in the posterior mandible, 1 in the anterior maxilla). Histologically, most of the lesions were diagnosed as parakeratinized OKC and %50 of lesions associated with the impacted teeth. Five of the 18 patients were treated with surgical enucleation, 5 patients with marsupialization and subsequent enucleation and Carnoy's solution, and the others with enucleation and Carnoy's solution. The patient have followed-up between 2 months and 6 years without singns of recurrence.

Introduction: Deep periodontal pockets are eager to create serious bone lesions. Those horizontal and vertical intraosseous invasions, accelerate after teeth extractions bone resorption, sometimes making implant placement impossible. Purpose: Aim of this article is to explain the method our team uses, to predict and cure such patients. Using early augmentation techniques, immediately after extractions, we eliminate resorption, creating an adequate underground for later implant placement. GTR ­GBR and sometimes combination, always give us predictable results. Materials and method: We treated patients with extended periodontal lesions. After teeth extractions, we immediately used GBR with resorbable membranes (Βio-gide) and mixture of autogenous cortical bone, with bovine (Bio-oss). We placed implants in second time, because of pure initial bone underground. We paid attention to close alveolar flaps. After six months and radiographic check, implants were placed. Initial stability was always over 25 Ncm. Results: The results were positive in all cases and the osteoid we created was stabile. We had no infections. In some cases, where we made combination with GTR, we evaluated (radiographic and probing) good results, concerning the biological width of attachment, of neighbor teeth. One year after prosthetics reassessment showed nothing pathological. We evaluated fine results to the attached gingival around implants and teeth. Conclusion: Two stages technique is inevitable many times when we have extended periodontal lesions. Time until prosthetic rehabilitation is about 9-11 months. Our results show that, nevertheless the long two stage treatment, the tissue augmentation and prosthetics are predictable positive.

Oral Presentaions

OP 092 TREATMENT Of BENIGN TUMOURS IN ThE ORAL CAVITy WITh hIGh-fREQUENCy ELECTRO-SURGERy Authors A. Dinkova, A. Bakardjiev Medical university- Faculty of dental medicine Plovdiv, Bulgaria The high-frequency electro-surgery is considered as a treatment of the benign tumors in the oral cavity by the authors. A case of benign tumor located on the frontier of the soft palate and plica pterygomandibularis on the oral cavity's mucous membrane has been reported. The working protocol is presented and the surgical intervention technique of performance is described. The stages are methodically followed. The potentiality of the high-frequently electro surgery in the treatment of benign tumours in oral cavity is analyzed.

OP 094 VERRUCOUS CARSINOMA: A CASE REPORT Authors Hazem Melad, Erdal Erdem, Elvan Pala Ankara University, Faculty of Dentistry, Department of OMFS, Turkey Verrucous carcinoma is a variant of well-differentiated squamous cell carcinoma that was originally described in 1948. It is characterised by an exophytic warty growth that is slowly but locally invasive and can cause extensive local destruction if left untreated. It rarely metastasises. 75% of verrucous carcinomas occurs in the oral cavity and 15% in the larynx. In the oral cavity, the buccal mucosa and gingiva are most frequently involved. Verrucous carcinoma may be treated by excision (by laser or surgery), and by radiotherapy. It appears that surgery is a more effective treatment for verrucous carcinoma.In this case a patient with verrucous carcinoma located on the left side of buccal mucosa has been presented. Radical surgical excision of the tumour was the choice of the treatment. Two years follow up examination revealed that healing was good and wonderful.

OP 093 TWO STAGE IMPLANTS PLACEMENT APPROACh IN PERIODONTAL PATIENTS. Authors Papamanthos M.*, Chatzimendor D.**, Fkiaras A.**, Papadimitropoulou V.*, Tapia D.*, Exarhou M.**, Dalampiras S.*** *Dental Care Department, General Hospital of Volos, **Surgeon Dentists, ***Dental Care School, University of Thessaloniki, Greece.

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OP 095 DISTRIBUTION Of CRANIOfACIAL VARIABLES IN KOSOVO ALBANIAN POPULATION Authors Gloria Staka * Ibrahim Behluli **, Agim Islami * *Department of Prosthetic Dentistry, School of Dentistry, Medical Faculty, University of Prishtina, Kosovo **Department of Anatomy, Medical Faculty, University of Prishtina, Kosovo Introduction: The shape of the head and face depend on many factors, such as racial and ethnical affiliation, climate, surroundings, socio-economic, nutritional and genetics influences. Measurement of the craniofacial variables is important for studies of human growth, population variation and clinical treatment. Aim: This study was aimed to establish standards for craniofacial variables and distribution of cranial and facial indices in Kosovo - Albanian population Matherial and methods: The study population consisted of 204 subjects (101 males and 103 females, aged 18 to 30). Four basic craniofacial variables (maximum cranial length, maximum cranial width, morphological facial height and bizygomatic width) were measured to obtained cranial index and facial index. Results: Craniofacial variables are considerably higher in males then in females (p<0.0001). Conclusions: In the Kosovo - Albanian population brachycephalia (44.61 %) and hyperleptoprosopia (63.34%) prevail.

Results: Panoramic radiographs of 1065 patients with mean age of 38.17 were examined. A total of 55 lesions of 50 patients (4.69 %) whose mean age was 36.08 were detected. There was no statistically significant difference for gender altough the prevalance in females was slightly higher. The mandible has proved to be the most affected site (96%) in the the premolar teeth region (49.06%,) followed by the first molar (30.19%), second molar tooth (16.98%) and canin tooth region (3.77%). The lesions examined had an average diameter of 8.11mm. Conclusion: Prevalance of IO has proved to be parallel as reported in other articles, though remaining significantly lower than the values reported in Eastern populations. From the clinical point of view, IOs have been identified as sporadic radiographic findings without any real pathological relevance, except for one case in which the lesion caused pain thouht to be the result of nervous compression.

OP 097 ELDER ABUSE AND ITS fORMS Of EXPRESSION. Authors Stavrianos C., Zouloumis L., Stavrianou D., Stavrianou I. Department Of Endotology (Forensic Dentistry), Department Of Oral And Maxilofacial Surgery, Faculty Of Dentistry, Aristotle University Of Thessaloniki, Greece One of the characteristics of the 21st century is the increase of elder population, as a result of demographic, financial and health alterations, that have occured in our society. There can be different types of elder abuse.Physical abuse, sexual abuse, inactive abuse, active abuse, self-neglect or abandonment, financial exploitation, psychological abuse.Signs and symptoms can be noticed dy neighbours and be reported. It is a major importance that the dentist/doctor is qualified and informed of the protocol on handling cases of elder abuse.

OP 096 IDIOPAThIC OSTEOSCLEROSIS Of ThE jAWS: PREVALANCE AND DISTRIBUTION ON A GROUP Of TURKISh DENTAL PATIENTS Authors Dr. Meryem Toraman Alkurt, Dt. Elif Sadik, Dr. Ilkay Peker Gazi University Faculty of Dentistry Department of Oral Diagnosis and Radiology, Turkey Introduction and purpose: Idiopathic osteosclerosis(IO) are localized, non-expansive and asymptomatic areas of bone radioopacity, whose etiology is unknown. The purpose of this study was to assess the prevalance and distribution of IO according to its location and to patients\' age and gender, in a sample of Turkish dental patients. Material and Methods: Digital panoramic radiographs of consecutive patients who attended the Oral Diagnosis and Radiology Department of Gazi University Faculty of Dentistry were examined for the presence of idiopathic osteosclerosis in the jawbones. The size and anatomic location of the lesions were recorded. OP 098 EVALUATION Of hSP 60 AS AN ETIOLOGICAL fACTOR IN ORAL LESIONS Of BEhET'S DISEASE Authors Ediz Deniz DDS Phd, Ulker Gus DDS Phd, Nesimi Buyukbabani MD, Ahmet Gul MD Yeditepe University, Faculty of Dentistry, Turkey Backgraund: Behet's disease is a systemic infammatory disease of unknown etiology. Heat shock proteins (Hsps), a highly conserved class of protective cellular proteins that are produced under various conditions of environmental challenge, have been implicated as the antigenic stimulus in autoimmun diseases. Hsp 60 has been implicated in the etiology of Behet's disease, but its expression at sites of inflammation is unknown. Objective: Our aim was to investigate the role of Hsp 60 in the formation of recurrent oral ulcerations in Behet's disease.

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Methods: Intraoral lesional biopsy specimens were obtained from patients with Behet's disease (n=11), recurrent aphthous stomatitis (n=11), oral lichen planus (n=11) and oral mucosal biopsy specimens from healthy individuals (n=11) as the control group. All groups were analyzed by biotin streptavidine-AEC using the monoclonal mouse antibodies to HSP 60 Ab-1 (clone LK1). HSP 60 staining intensity in different layers of the epithelium were evaluated in a blinded fashion. Results: Hsp 60 expressions observed in the basal, suprabasal and superficial layers of epithelium in intraoral lesions of Behet's disease patients were significantly higher than those of oral mucosal biopsy specimens taken from healthy individuals. Conclusions: Significantly altered expressions of Hsp 60 were found in all intraoral lesions of Behet's disease patients, supporting Hsp 60 to be an etiological factor in the formation of intraoral lesions. However, it can be speculated that Hsp 60 expression might have increased as a reaction to the inflammation at the intraoral lesions occuring in Behet's disease patients.

Conclusion: T. forsythia was detected in 15 of 18 cases of primary endodontic infections, for a total frequency of 84%. The result is presented by the exponential amplification curve of T. forsythia DNA product, using real-time PCR SYBR Green assay. This method showed sufficient sensitivity and may be suitable for routine clinical examinations. Universal primers for 16S rDNA along with the T. forsythia primer pairs were used.

OP 100 ThE fREQUENCy Of PRESENCE Of MB2 AND MB3 IN MAXILLARy MOLARS Authors A.Gusiyska Assistant Professor in Department of Operative Dentistry and Endodontics, Medical University ­Sofia, Bulgaria Introduction: The goal of successful endodontics is the total preparation of the whole endodontic space.The success of endodontic therapy is dependent on the quality of cleaning of the entire root canal system. Varying morphology in human teeth is a common occurrence. Therefore, it is of major importance to have a thorough knowledge of the dental anatomy and its variation prior to initiation of treatment.The maxillary permanent molars has been studied by many authors but the results are disparity, both as regards the number of canals found in the mesiobuccal (MB) root and in their disposition. It is known that failure to find and treat this additional canals may modify the long-term prognosis of treatment. Materials and methods: The clinical study included 96 maxillary first and second molars. All of them received endodontic treatment. There was formed two groups ­ I group in include 52 first maxillary molars and II group ­ 44 second maxillary molars. It was made preoperative and postoperative x-ray studies. Endodontic access was prepared with bur # H269GK.314.016 (Komet, Brasseler, Germany).Endodontic probe EXDG (Hu Friedy, USA) was used for precise preparation of endodontic access. Ultrasound endotips (EMS, Switzerland,) and Micro-Openers (Millefer, Switzerland) helped for detection orifices of extra canals. Working length was determinate electrometrically -Raypex 5 (VDW, Germany). It was used appropriate magnification for location of additional canals. Results: The results of this study show that the use of appropriate magnification,ultrasound tips, hand and finger instruments increase detection of elusive canals. In this clinical study it was find that in 88.5% of cases of first maxillary molars have MB2, 6.5% - MB3, 47.7% of cases of second maxillary molars have MB2 and 2.2% - MB3. According Virtucci's classification mesiobuccal roots of these teeth who received endodontic treatment in the clinical study was classified into four group- I group: MB roots I Type(30.4%), II group: MB roots II Type (43,7%), III group: MB roots IV Type (21.8%) and IV group: MB roots VIII Type (4.1%). Conclusions: Successful endodontic treatment demands an accurate locating root canals.The inability to find extra canals will

Oral Presentaions

OP 099 SyBR GREEN REAL TIME PCR IN PRIMARy ENDODONTIC INfECTION Authors Lejla Kapur-Pojskic, Jasmin Ramic, Naida Lojo-Kadric School of Dentistry University of Sarajevo and Institute for Genetic Engineering and Biotechnology, Sarajevo University, Bosnia and Herzegovina Introduction: T. forsythia, strict anaerobic Gram-negative fusiform bacterium is suspected to play an important role in the development of endodontic and periodontal diseases. Aim: The present study was undertaken to investigate the prevalence of T. forsythia in primary endodontic infections associated with different forms of apical periodontits. In this investigation we also performed higly sensitve species- specific 16S rRNA gene based real-time SYBR Green PCR. Material and Methods: Selected for this study were eighteen patients with diagnosed primary endodontic infection, having carious lesions, necrotic pulps, and radiographic evidence of periradicular disease. Samples were obtained under strict asepsis. Each tooth was isolated with rubber dam, cleansed with 3% H2O2, decontamined with a 2,5% NaOCL. Complete access preparation were made using sterile burs, and the operative field including the pulp chamber, was then swabbed by sterile 2,5% NaOCL and 5% sodium thiosulfat. Samples were collected by K-type file, two papaer points and transferred to sterile tubes containing 1mL of TE buffer. Samples were frozen at -20◦C. Further molecular genetic identification procedure was continued at laboratory for human genetics, Institute for Genetic Engineering and Biotechnology, Sarajevo University, B&H.

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result in failure of endodontic treatment. Thorough knowledge of these variations is essential prior to initiation of endodontic therapy. More attention should be focused on the morphological variations adopted by both orifices in the chamber floor with a view to facilitating the localisation of the elusive MB canals. Key words: maxillary molars, mesiobuccal root canal, additional root canals.

Objective: The purpose of this study was to evaluate if and how a long term radiographic monitorisation can validate an endodontic theraphy success. Matherial and methods: 1290 cases endodontically treated during the teaching process between 1998-2008 in the Department of Restorative Dentistry, Faculty of Dental Medicine, UMF "Carol Davila", Bucharest were radiologically investigated (with identical exposure geometry) before, during and after the treatment for at least a period of 16 months. From the standardized radiographs digitized images were produced and the series of images were submitted for a double analysis (at 14 days period) to six observers with different clinical and radiological background. The main radiographic feature observed for each case as an indicator of a optimal therapy was the periapical status. The degree of apical wellness was indicated by the absence of evolving periapical lesions and the healing stage of the preexisting or posttreatment developed periapical lesions. Results: For all the observers the radiographic landmarks presented individual variations related to the initial pathology and particularities of evolution for each monitorized categories. The interexaminer agreement and the intraexaminer agreement were significantly higher for the second analysis(P < 0.001). Conclusions: These findings suggest that long term radiographic survey of the periapical status is an useful tool to evaluate the endodontic success. The method has a easy learning curve and offers good results even to the less experienced observers. Key Words: periapical status,endodontic treatment, long term radiographic survey

OP 101 ThE IMPACT Of EXTRUSION Of ROOT CANAL fILLING MATERIALS ON TREATMENT OUTCOME Authors Kassampali Maria, Demertzi Eleni, Ioannidis Konstantinos, Lamprianidis Theodoros Aristotle University Of Thessaloniki Department Of Endodontics, Greece Extrusion of root canal filling materials is regarded as a procedural iatrogenic error during obturation of root canal system. Guttapercha and root canal sealers are the main biomaterials, which are involved in direct contact with healthy or inflamed periapical tissues and/or certain anatomical regions. Histological studies indicate that the presence of filling materials in contact with periapical tissues may cause a foreign body reaction. Concerning the treatment outcome, there is a number of clinical studies demonstrating that extruded filling materials contribute to delayed healing responses and poorer prognosis. This statement does not imply that all root canal treatments involving extrusion may lead to failure. The purpose of this study is the presentation of a series of cases in which the outcome of root canal therapies with extruded materials are presented and documented. The treatment results were recorded and evaluated radiologically at several observation periods that ranged from six months to several years and assesed as favourable, uncertain, unfavourable, according to the Quality Guidelines for endodontic treatment by the European Society of Endodontology (Quality guidelines for endodontic treatment: consensus report of the European Society of Endodontology. Int Endod J 2006; 39:921-930).

OP 103 TISSUE DISSOLVING hyPOChLORITE

ABILITy

Of

ThE

SODIUM

Authors Sonja Stojicic, Slavoljub Zivkovic The School of Dentistry, University of Belgrade, Serbia Introduction: Sodium hypochlorite is widely used endodontic irrigant due to its antimicrobial and tissue dissolving activity.

OP 102 ThE PERIAPICAL STATUS EVALUATION Of ENDODONTIC TREATED TEETh BASED ON A LONG TERM RADIOGRAPhIC SURVEy Authors Narcis Marcov, Elena -Cristina Marcov "Carol Davila" Medical and Pharmaceutical University, Bucharest, Romania The radiographic investigation of teeth that require endodontic treatment is sometimes the only method that indicates their initial status, certifies the existing pathology and orientates the therapeutic plan.

The aim: The aim of this study was to evaluate and compare the effect of the different endodontic irrigants on dissolving organic material. Material and Methods: The irrigants used were: saline, 3% hydrogen peroxide, 17% EDTA, 10% citric acid and sodium hypochlorite solutions in concentrations of 0,5%, 1%, 2%, 4%. Distilled water was used as control. Pieces (4*4*2mm) weight 152 ± 1 mg of bovine muscle tissue were placed in 10 ml of each solution for 5 minutes and 15 minutes. The tissue specimens were weighed before and after treatment, and percentage of weight loss was calculated. Results: Weight loss of the tissue was presented only in sodium hypochlorite solutions and increased linearly with the

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concentration of sodium hypochlorite. In the concentrations of 2% and 4%, percentage of tissue weight loss was statistically significant. After 15 minutes tissue weight loss was significantly higher than after 5 minutes. Conclusion: The effect of concentrations of the sodium hypochlorite solutions on tissue dissolution was greater than that of time.

OP 105 CyTOTOXICITy Of CALCIUM hyDROXIDE LINERS IN DENTIN BARRIER TEST Autors Ulker M., Sengun A., Ulker He, Yalcin M Department Of Operative Dentistry, Faculty Of Dentistry, Selcuk University, Turkey Objective was to evaluate the cytotoxicity of calcium hydroxidebased liners (CHBL): two self-setting (Dycal, Dentsply, USA and Bosworth Hydrox, Bosworth, USA) and two light-curing (Biocal, Biodinamica, Brazil and Calcimol LC, Voco, Germany) on the cell viability of bovine dental pulp derived cells (BDBC) by direct contact cytotoxicity (DCC) and dentin barrier tests. For DCC test, the bovine pulp derived cells in MEM alpha medium were seeded onto 96-well plate and incubated to confluence at 37°C and 5% CO2.. The cells exposed to medium in which the samples were stored for 24 hours. Three dimensional cultures of BDPC cells (Thonemann and Schmalz 2000) were transferred into an in vitro dentin barrier test device with dentin slices of 500 micrometer thickness and incubated for 24 h at 37°C. The test materials were applied into the cavity part of the device. A-silicone impression material (President, Coltene) was used as negative control. The pulpal part of the device was perfused with cell culture medium (2 ml/h) for 24 hours. The cell survival rate was measured by MTT test and the data were statistically analyzed (Mann-Whitney-test, p=0.05). The results of DCC test showed that Calcimol presented no cytopathic effects (p>0.05). However, Bosworth-Hydrox (47%), Dycal (47%) and Biocal (54%) significantly reduced the cell survival rate (p<0,05). On the other hand, in dentin barrier test the liners showed no cytotoxicity when dentin slices with 500 micrometer thickness were use (p>0.05). This study suggested that right material selection was a critical step to provide necessary treatment of pulp.

OP 104 BIOLOGICAL AND BIOMEChANICAL SILICINIC BIOMATERIALS INVOLVED RECONSTRUCTIONS

BEhAVIOUR Of IN PROSThETIC

Oral Presentaions

Autors Magda Antohe, M. Agop, Maria Cazacu, Doriana Forna, Norina Forna The Faculty of Dental Medicine "Gr. T. Popa", The University of Medicine and Pharmacy, Romania Purpose: The study proposes at this stage the improvement of the qualities for the biomaterials used in the field of prosthetics reconstructions, the lucrative esential trajectories aiming the siliconic materials whose structural modifications and their associations determine the elaboration of some prosthetics constructions whose comforts surpasses the present solutions in the daily stomatological practice. Materials and method: The induced modifications in the structure of the materials are coroborated with the mathematical modelling of different prosthetic reconstructions. The first step was constituted by the realization of CTs, followed by their scanning and the usage of the material constants. The biological aspects have been forwarded by the biocompatibility studies, applied to the silicon test-tubs, made in the dental technique laboratory, or to the hypodermic implants at the rodent laboratory animals. Results and discussion: This type of modelling proposes to emphasize the distribution of tensions from the bone level in different clinical cases. At the macroscopic examination it can be observed that the silicon fragment maintains it's almost parallelepiped form. The microscopic exam reveals structural mending phenomena, initially mainly the lymphohistocyte cells, and then mainly the fibrous cells. Conclusions: The simulation of the real clinical situations following the contribution of the tomographic computer constitutes a highly important stage in the evaluation of the degree of resorption and atrophy at the level of the indented crests, process whose parameters are influenced by the factorial accumulation with a profound impact in the clinical result.

OP 106 ThE USE Of PROPOLIS fOR TREATMENT Of MEChANICAL INjURIES Of ORAL TISSUE Authors Milivoje Stojanovic, Zorica Stojanovic Dom Zdravlja Zemun, Stomatoloska Ordinacija Dr Milivoje P Stojanovic, Serbia Aim: The aim of this work is to prove effect of propolis. Methodology: During the treatment we've been using 30% alchocol solution of propolis. Patients were present for regular teeth recovery and simultaneously the injuries treated with propolis. Affected areas should be carefully cleaned with 3% hydrogen peroxide solution, dried with hot air and than coated with propolis until homogenized layer is created. It should be dried again and during that process alcohol evaporates and layer becomes protecting film which can be effective up to 24 hours. This procedure should be repeated every day until completely healed. Patients were advised to use emulsion made by mixing destilated water and propolis in proportion 1:1 or 1:2. This mixture is thick, beige and flavoured.

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Results: During two years we studied 150 patients and in every case the effect was positive, pain was reduced or even disappeared and treatment duration was shorter. Patients participated with satisfaction and mostly were interesed in continuos usage of propolis even after injuries were healed. Conclusion: Due to its known positive attributes, propolis can be used for intra oral inflammation offering simplified technique, short treatment period and easy application to every surface.

OP 108 hERPETIC GINGIVOSTOMATITIS-INCIDENT REPORTING Autors Kostakou Evgenia*, Tsironis Christos**, Kantaraki Eleni***, Dalampiras Stelios**** * Dentist,General Hospital of Arta, Greece ** Dentist, Greece *** Nurse,General Hospital of Arta, Greece **** Professor,Aristotle Universe of Thessaloniki, Greece Aim: To underline the significance of holistic treatment of hospitlised patients,and especially children.To highlight the value of collaboration between specialisations and the role of the general dentist in hospitals.

OP 107 ThE DENTIST'S ROLE IN AIDING IN ThE IDENTIfICATIONS Of MISSING ChILDREN Authors Stavrianos Christos*, Katsikogianni Eleni**, Stavrianou Irene***, Tretiakob Georgios** *Assoc. Professor. Department of Endodontology (Forensic Dentistry), School of Dentistry, Aristotle University, Thessaloniki, Greece. **Student of Dentistry ***Dentist. Aristotle University Of Thessaloniki, Greece The phenomenon of missing children is a multi-dimensional problem which has gained international attention the last few decades. The percentage of children and young people reported missing has risen dramatically and is estimated that around 800,000 children annually becoming missed. These alarming elements have led all the relevant authorities to more coordinated efforts in order to facilitate the investigations and support the parents. The purpose of this report is to review the dental aspects of missing children by exploring the supplementary role of forensic odontology in aiding in the identifications of missing children by the means that are now available. Parents in cooperation with their family dentist can collect child's individual data by recording dental radiographs, facial photographs, studying casts, dental histories, teeth present, distinguishing features of oral structures and bite registrations. Additionally Toothprints®, a thermoplastic dental impression wafer which depicts child's individual dental characteristics, collection of saliva DNA and engraving of serial number in its teeth are more complicated actions however can aid significantly in the identification of a missing child. A detailed and occasionally updated dental record establishes an excellent database of confidential identification information that can be retrieved easily. The dentist is obliged by the law to provide the authorities with copies of all the available dental records in case of a missing child. Today many national dental and social organisations recognizing the catalytic role that dental records can play in forensic identification impel dental practitioners to carry out simple practices that can aid to this direction.

Introduction: Herpetic gingivostomatitis is a relatively common viral infection of the mouth and is caused by the simple herpes virus (type 1 or HSV-1 and on rare occasions type 2 or HSV-2), which penetrates thw cells of the epithelial΄s acanthotic layer and then moves along the sensory nerves, reaching the trigeminal ganglion. The infection and destruction of the acanthotic epithelial cells leads to the formation of herpetic vesicles, which rupture, leaving uclers.It is encountered as either primary herpetic gingivostomatitis or secondary herpetic gingivostomatitis (cold sore), which is manifested when the simple herpes virus type 1 reactivated after the primary infection. Material and method: Five children (2 girls and 3 boys)aged between 7 and 11 presented at the Pediatric Clinic of the Arta General Hospital with fever, 2 to 10 days after experiencing pain and swelling of the area of the tonsils.They complained of inability to eat, sores and pain in the gums. Conclusions: The situation is self-contained and subsides in 10 15 days.Treatment should focus on making the patients comfortable, aiding their feeding,keeping them hydrated and caring for basic oral hygiene. This may include mild cleansing and relief from pein.The use of antiviral medication may also be considered so as to precipitate the healing process.Herpetic gingivostomatitis is transmitted via physical contact, so direct contact must be avoided dyring the time of healing.Following the rules of general personal hygiene and the measures taken by epidemiological intervention contribute significantly to reducing the freguency with which these infections are transmitted

OP 109 DENTAL CARE ACROSS ThE GLOBE Authors Mladen Behara, Dusica Bozovic Behara, Biljana Knezevic Private practice CACAK, Serbia For at least two decades,medical tourism has been an increasingly popular alternative for the uninsured desperate for care,and for middle class EU willing to travel to secure affordable health care.

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Roughly half a million EU sought medical care abroad in 2006,of which 40 percent were dental tourists,acording to the NCHC. Dental bridges and bonding ranked No 1 and 2 on a list of most sought-after procedures.The growing numberof medical travel agents who vouch for the foreign doctors they recommend. Agents help patients choose between sightseeing-plus-dental pack-ages from Hungary to Mexico. In this poster we present our experience whit this patients and dental procedures. There are two main groups of family-oriented dental travelers. Immigrants have long returned to their countre of origin for dental and medical care and to spend time with relatives.B ut now there\'s a more recent wave of patients,interested in taking their families to a far far-flung location to make the best out of what is essentiallya rather unpleasant chore. Passport to a vacation as well as a root canal.

* Dentist, Greece ** Dentist,General Hospital Of Arta, Greece *** Nurse,General Hospital Of Arta, Greece **** Professor,Aristotle Universe of Thessaloniki, Greece Introduction: The impulses of many young people and the new fashion trends nowadays reguire,apart from earlobe piercing,piercing in other parts of the body,such as the nose, the tongue,the lips,the nipples,the bellybutton and the genitals. Aim: To prove that piercing in the mouth cavity is extremely dangerous,as it fevours the existence and development of bacteria and infections. Material and method: The research sample consisted of 250 young adults[250 secondary education stydents from throughout the Prefecture of Arta].The guestionnaire was developed based on international bibliography. The SPSS program for Windows was used to input the coded data ahd process it statistically.The method used involved cross tabs. findings: Accurate remarks and correct information on the part of the dentist, in conjunction with evaluating and using proper methods assisted many young adults[45%] in complying and removing the studs from their mouth.Moreover,60% understood the need to prevent complications. Conclusions: Piercing in the tongue and the lips constitute fertile ground for the manifestation and development of infections {e.g. staphylococcus}, since, due to complications,shrinking of the gums and loss of the front teeth is observed, mainly because of friction between them and the stud.Those who ave to decided to proceed with piercing should be advised that they need to practice andobserve the rules of sterilisation pedantically.

Oral Presentaions

OP 110 EffECTS Of PhySICAL WORKLOAD ON SALIVARy CORTISOL LEVEL Authors E. Krsljak, J. Scekic, E. Nikolic-Pejovic, D. Popovic Faculty of Dentistry, Belgrade University, Serbia Workload is known to affect the hypothalamus-pituitaryadrenal axis. This study was conducted to evaluate the effects of physical workload adjusted job stress on cortisol regulation by using objective tools for workers having various job tasks. Fifteen male workers, age 36-56 from CAP, were instructed to collect morning and afternoon saliva samples in salivette tubes to allowe cortisol analysis in saliva and plasma by RIA. Analysis indicate that morning unbound salivary cortisol levels was (50.61+-19.71) nmol/L and afternoon was decreased (40.09+-11.74 nmol/L). The cortisol levels in plasma were 433.43+-194.92 nmol/L and 274.59+-113.69 nmol/L, morning and afternoon, respectivly. Salivary cortisol has been showed to be valid and reliable of unbound, ,free,, cortisol levels, compared with unbound cortisol levels in plasma. Analysis indicate that results for, ,free,, cortisol levels between saliva and plasma are correlated. Physical exhaution due to exessive worload could have adverse effects on neuroendocrine system. Key words: saliva, stress, unbound cortisol

OP 112 LEADING TRENDS IN DENTAL PROfESSION'S DEMOGRAPhy IN BULGARIA fOR ThE PERIOD 1996-2008 Authors Lydia Katrova* *DDM, MPH, PhD Assoc. Prof. Dept Public health, 1 Georgi Sofiiski Str. 1431 Sofia Faculty of Dental Medicine, Sofia, Bulgaria The purpose: of this investigation was to present the demographic traits of the dental profession in Bulgaria after its admission to the EU and to demonstrate the dynamic of changes during the period 1996-2008. Material and Methods: Secondary data analysis was performed based on official registers of the BgDA, NHIF and NHII. Established facts were compared to these from similar investigation carried out in 1997. Results: As on December 2008 there were 7834 registered doctors in dental medicine. 7641 among them were in active practice. The number of active women dentists is 5080. Women

OP 111 PIERCING: NEW COMPLICATIONS

fAShION

TRENDS

AND

ORAL

Authors Tsironis Christos*, Kostakou Evgenia**, Kantaraki Eleni***, Dalampiras Stelios****

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to men ratio is 65%:35%. Average age of dentists is 41,7 years. The distribution along the country is irregular.The number of registered dentists in Sofia (3262)represents about 1/3 of the total. Only 2445 of them are active (1659 women and 786 men). Women to men ratio in Sofia is 67%:33%. The average age is 39 years. Comparing the results to these from 1997 a sustainable trend toward defeminization was observed (73%:27% for the year 97). The average age of dentists in 2008 is higher (41,7 in 2008 versus 39,7 for 1997). The trend for concentration of dentists in Sofia persists. A new trend is the decrease of the average age of dentists practicing in Sofia (39 years versus 41,7 for the whole country). Conclusions: 1. Besides increase of the absolute number of registered dentists in Bulgaria a further decrease of the number of active dentists should be expected. 2. Concentration of dental practices in Sofia reached its pick. 3. A change of the demography characteristics of practicing dentists in Sofia is observed. 4. This fact probably due to the new technologies and market development, has to be studied.

OP 114 ThE RELATIONShIP BETWEEN jAW BONE MINERAL DENSITy AND PANORAMIC RADIOMORPhOMETRIC INDICES Authors Ayse Gulsahi, Sehrazat Ozden, A.R. Ilker Cebeci Baskent University Faculty of Dentistry and Ankara University Faculty of Dentistry Aim: To investigate whether there is any correlation between the bone mineral density of the jaws and panoramic radiomorphometric indices. Materials and Methods: Forty-nine edentulous patients (18 males and 31 females), between 41 and 78 years of age (mean age 60.2±11.04) were recruited the study. The patients were healthy with no known metabolic bone disease. Patients' age and gender was recorded. Panoramic radiographs and DEXA scans of the maxilla and mandible was obtained. Mandibular cortical index, mental index and panoramic mandibular index on panoramic radiographs were recorded. Left femoral neck, bone mineral densities at three sites of the maxilla and mandible (anterior, premolar and molar, in g/cm2) were also calculated. The relationship between the maxillary and mandibular bone mineral density and panoramic radiomorhometric indices was assessed by calculation of Pearson's Correlation Coefficiant using SPSS. Results: The mean maxillary anterior, premolar and molar bone mineral densities were 0.32, 0.31 and 0.45 g/cm2, respectively. Furthermore, the mean mandibular anterior, premolar and molar bone mineral densities were 1.40, 1.33 and 0.99 g/cm2, respectively. C1 (53%) was the most C3 (12%) was the least observed mandibular cortical index category. The mean mental index and panoramic mandibular index values were 3.4±1.0 mm and 0.30±0.10, respectively. Maxillary and mandibular bone mineral densities were not correlated with the mandibular cortical index, mental index or panoramic mandibular index. Conclusion: Neither maxillary nor mandibular bone mineral density was correlated with panoramic radiomorphometric indices.

OP 113 DETERMINATION Of PANORAMIC RADIOMORPhOMETRIC INDICES ACCORDING TO DEMOGRAPhIC fACTORS IN TURKISh POPULATION Authors Ayse Gulsahi, Bulem Yuzugullu, Pervin Imirzalioglu Baskent University Faculty of Dentistry, Turkey Objectives: The aim of the present study was to determine the distribution and mean values of mandibular cortical index (MCI), mental index (MI) and panoramic mandibular index (PMI) in a large population group and in addition, to assess the effects of age, gender and dental status on these indices. Material and Methods: Panoramic radiographs of 698 (37.5%) males and 1165 (62.5%) females over 20-years-old were assessed during the years 2005-2006 in Başkent University. Panoramic radiographs were grouped into three age groups. Gender and dental status were recorded for each patient. MCI, MI and PMI values were evaluated and comparisons were performed using Chi-square, One-Way ANOVA, Kruskal Wallis and Mann-Whitney U tests. Results: As age increased, frequency of C3 category increased (p<.001) and MI values decreased (p<.001). While C2 category was significantly more seen in males, C1 category was more frequent in females (p<.001). While PMI values increased in females (p<.001), there was not any statistically significant difference regarding MI (p>.05). Frequency of C3 category increased (p<.001) as edentualism increased, however there was not any significant difference in PMI (p>.05) or MI values (p>.05). Conclusion: While mandibular cortical index is correlated with age, gender and dental status; MI changed with age and PMI changed with gender alone.

OP 115 CONVENTIONAL AND DIGITALLy PROCESSED RADIOLOGICAL IMAGES IN ThE DETECTION Of PROXIMAL EXTERNAL DENTIN CARIES Authors Elena - Cristina Marcov, Narcis Marcov "Carol Davila" Medical and Pharmaceutical University, Bucharest, Romania Scanning of conventional films and digitally enhancement using image editors have provided lately new and useful information in dentistry which deserves further exploration. Objective: The intention of this study was to establish the effects of digital enhancement of radiological images in the detection and evaluation of the depth of external dentin caries.

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Material and Methods: The "in vitro" study: 100 proximal surfaces from anterior extracted teeth and 100 proximal surfaces of posterior extracted teeth were radiographed using a semistandardized parallel technique. The fragments of interest viewed at the scanning electronic microscope represented the gold standard. The "in vivo" study: 200 clinical cases of teeth with caries were radiographed, exploratory drilling indicating the gold standard. All radiographs were, then, scanned and digitally processed with automatic and manual commands of an image editor. 6 observers with different degrees of experience in dental radiology and computer skills were subjected for analysis of all the images. Receiver Operating Characteristics curves were used in statistics. Results: For the "in vitro" study, the mean A(z) was 0,742 for the images on film and it was 0,766 for the enhanced images (p>0,05). For the "in vivo" study, the mean diagnostic performance for the images on film was 0,805 and it was 0,812 for the digitally processed images. Conclusions: The diagnostic performance of all observers improved after digital processing. The chosen commands varied according to the type of study and to the characteristics of the observers. A connection was established among the type of study, the type of caries and the type of commands used to enhance the images. Key Words: external dentin proximal caries, digital enhancement of the radiological image, image editor, diagnostic performance

for GA due to their lack of co-operation and/or to the amount of treatment needed. 71.7% of the patients had never seen a dentist before despite the need. Conclusions: Dental treatment for mentally disabled patients is often possible under regular dental office circumstances. Early regular dental check-ups are of utmost importance in this category of patients, as they can help avoid the need for extensive and more expensive dental care. A comprehensive long-term relationship with the dentist may also help improve the patients' dental behaviour and perception towards treatment with time. Parents and caretakers of mentally challenged children need to be better informed on the subject.

Oral Presentaions

OP 117 NON INVASIVE SMILE MAKEOVER By USING LUMINEERS By CERINATE Authors Dr. Ana Bundalevska ETERNAdent, Center for Dental Health, Macedonia The use of porcelain veneers in the smile frame has evolved and gained maturity. However ceramics remain the preferred aesthetic option for many clinicians either though, these techniques are still considered intricate, sensitive and, to a certain extent, unpredictable. These drawbacks, essentially related to the invasive nature of many of the veneer systems, as well as the need for temporary restoration and the fact they are irreversible, can be overcome today by the patented Lumineers by Cerinate. The aim of this presentation is to underline the benefits of Lumineers over the conventional methods, shown through 2 case presentations. This unique technology consists of ultra thin porcelain veneers (0.3mm) made of patented reinforced Cerinate porcelain. Lumineers enable us to correct diastemas, crowding teeth, certain malocclusions, tetracycline discolorations etc. by placing them over the teeth without removing any of the tooth structure. The Lumineers provide highest aesthetic achievement and the ideal margin closure, maintaining a good periodontal health. Comparing to the traditional veneers we didn't use any anesthetics, the whole procedure goes without any pain and the restoration is absolutely reversible. There are plentiful indications for use of such a simplified, but aesthetically uncompromised treatment modality.

OP 116 DENTAL MANAGEMENT Of ThE MENTALLy ChALLENGED PATIENTS Authors Vinereanu A, Olaru A, Andritoiu DC, Georgescu M, Bandoiu , Luca R Carol Davila University Bucharest, Romania Introduction: Dental care of mentally challenged patients is often a regarded as a secondary concern in the overall context of their general health. Their access to specialized dental care can be limited by economic and/or educational factors. Mentally disabled patients may be regarded as a challenge by dentists, especially when the degree of carious involvement and periodontal condition require complex care. Material and Methods: 113 mentally challenged patients (66 male) aged 4-22 years (13.07± 4.36) were studied with regard to their oral condition and dental behaviour (Frankl's scale). The subjects were examined and, when possible, treated under common dental office circumstances. Results: DMF-T and dmf-t were 5.01 [SD 5.54] and 4.11 [SD 4.61] respectively. 57.5% of the subjects accepted examination and treatment willingly (Frankl 3 and 4). 29.2% allowed infiltration anaesthesia and extractions. However, 21.2% were referred

OP 118 CLINICAL APPLICATIONS Of COMPOSITES: ThREE CASE REPORTS

fIBER-REINfORCED

Authors Bora Bagis, Fatih Mehmet Korkmaz, Rukiye Durkan, Sedanur Ustaomer, Sabri Cora, Elif Aydogan Karadeniz Technical University, Faculty of Dentistry, Turkey

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Glass-fiber reinforced composites (FRC) offer a restorative solution which is conservative and aesthetic when compared to the all other techniques. Other advantages include reduced cost, time saving, easy to apply, reliable adhesive bonding, long term retention, indication for metal allergy, easy to clean and natural feel. Its limitations are principally due to occlusal factors and unsuitable abutment teeth. Some clinical applications of glass-fiber reinforced composites are restoring the missing teeth and post-core preparation. EverStick (StickTech Ltd., Turku Finland) is semi manufactured product made of glass fibers, thermoplastic polymer and light curing resin matrix for reinforcing dental polymer. This report presents three different clinical cases of glass-fiber reinforced composites (everStick). In case I, endodontically treated anterior tooth with excessively damaged crown was treated with glass-fiber reinforced composite post (everStick post) and metal-ceramic crown. In case II, endodontically treated anterior tooth with excessively damaged crown anatomy was treated with glass-fiber reinforced composite post (everStick post) and incrementally built-up composite. In the third case, missed mandibular anterior tooth was treated with an artificial porcelain tooth splinting by glass-fiber reinforced composite to the adjacent teeth. Developing adhesive technology and glass fibers present more reliable and effective solutions for dental treatments to the clinician.

bond strength of Bond Force (14.37±4.46 MPa) was the lowest among the tested materials. Conclusion: Although the tested bonding agents were similarly mild self-etch adhesives, they showed different results. Therefore, the difference between the tested materials may be a result of their specific acidic monomers.

Authors Ali Riza Cetin, Nimet Unlu Selcuk University, Konya, Turkey Objectives: The purpose of this study was to compare the invitro wear resistance of three nanofilled composite with two indirect composite. Methods: Three nanofilled composite resins (Filtek Supreme XT, Tetric Evo Ceram, Aelite Aesthetic) and two indirect composite resins (Estenia, Tescera) were used in this study. Eight cylindrical specimens of each material were fabricated according to the manufacturers' directions (8mm x 2mm). than The composite disks were tested for wear against human enamel. Wear tests were conducted in artificial saliva using a wear simulator under conditions that represented typical oral conditions. The wear tracks were analyzed by 3D scaning and rapidform software to elucidate the wear mechanisms. For statistical analyses, One­ way ANOVA and Scheffe tests were used. Statistically significant differences were found in degree of wear between the five types of material (P<0.05). Results: Aelite, Estenia and Tetric exhibited significantly higher wear resistance after 30000 cycle compared with Filtek and Tescera (p>0.05). There are no statistically significant difference between, Estenia, Tetric and Supreme. Tescera showed lowest wear resistance after 30000 cycle. There are no statistically significant difference between Aelite Aesthetic and Tetric after 60000 cycle. And they exhibited significantly higher wear resistance compared with the other composites (p>0.05). There are no statistically significant difference between, Estenia, Tetric and Supreme and also no difference between Estenia, Supreme and Tescera after 60000 cycle (p>0.05). Conclusion: From the results of this study, it would appear that Aelite, Tetric and Supreme are all quite similar composites in terms of their degree of filling. However, significant differences exist in the relative wear. These differences may be the result of their individual matrix polymer components. But one of the indirect composite containing ceramic filler and highly-filled suggests that the filler loading may be important in altering the wear performance of indirect composites.

OP 119 COMPARISON Of ShEAR BOND STRENGTh Of SEVENTh GENERATION ADhESIVES TO DENTIN Authors Sengun A, Yalcin M, Kocabasoglu A Selcuk University, Faculty of Dentistry, Department of Operative Dentistry, Turkey Newer generation of adhesive systems use low pH resin primers to simultaneously demineralize and penetrate the mineralized tooth surfaces. The purpose of this study was to compare the shear bond strength of three current all-inone adhesives to dentin. Methods: Forty five III. molars were used in this study. Occlusal flat dentine surfaces were exposed by cutting of occlusal enamel and the standard smear layer was obtained by 600-grit silicon carbide paper. The teeth were randomly divided into three groups. Three all-in-one adhesives were used in this study; Bond Force (Tokuyama, JAPAN), Xeno V (Dentsply, GERMANY) and Optibond All-In-One (Kerr, USA). Adhesives were applied to dentine according to the manufacturers\' instructions. The resin composite of each adhesive system was applied on the bonded dentin surface using an application apparatus (Ultradent Products Inc.) and light-cured required time by a LED. After 24 hour storage in water at room temperature, the shear bond test was carried out using a universal testing machine with a cross head speed 0.5mm/min. The data were analyzed with ANOVA and Tukey HSD post-hoc tests. Results: Statistical analysis showed no significant differences in shear bond strengths between Xeno V (25.15±7.6 MPa) and Optibond (31.08±7.63 MPa). The shear

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OP 120 COMPARISON Of ThE WEAR RESISTANCE Of INDIRECT AND NANOfILLED COMPOSITE

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OP 121 CyTOTOXICITy EVALUATION Of DENTIN BONDING AGENTS By DENTIN BARRIER TEST ON 3D PULP CELL CULTURE Authors Abdulkadir Sengun, Muhammet Yalcin, Esra Ulker, Bora Ozturk, Sema S. Hakki Selcuk Universty, Faculty of Dentistry, Department of Operative Dentistry The aim of this study was to evaluate the effects of four dentin bonding agents on the cell viability of 3D cultured bovine dental papilla derived cells. The cytotoxicity of dentin bonding agents (G-Bond (GB), Adper Prompt Self-Etch (APSE), Clearfil DC Bond (CDCB), Quadrant Uni-1-Bond (UB)) were analyzed in a dentin barrier test device using three-dimensional (3D) pulp cell cultures (Thonemann ve Schmalz 2000). A polyvinylsiloxane material (President) was used as negative control. Cell culture perfusion chamber was separated into two compartments by 500 µm bovine dentin disc. The 3D cultures placed on the dentin disk. The test materials were introduced into the upper compartment in direct contact with the cavity side of the dentin disks according to the manufacturers' instructions. Subsequently, the pulpal part of the perfusion chamber was perfused with medium (MEM Alpha, Germany) (2 ml/h). After an exposure period of 24 h, the cell survival rate was determined by the MTT assay. Statistical analyses were performed using the Mann­Whitney U-test. In dentin barrier test, cell survival rate of UB was similar to control group (p>0.05). however, all other tested materials were cytotoxic for the 3D pulp derived cell cultures (p<0.05). As a conclusion, dentin bonding agents includes biologically active ingredients and may modify pulp cell metabolism when the materials are used in deep cavities in spite of a dentine barrier. If these adhesive agents are used in deep cavities, a biocompatible cavity liner should be used.

subgroups according to the adhesive systems used (Clearfil SE Bond, Clearfil Tri-S Bond, Adper Prompt-L-Pop, Adper Single Bond 2). Bond strengths were determined with a Universal Testing Machine, at a crosshead speed of 0.5 mm/min. Data were statistically analyzed using ANOVA at a significance level of 0.05. Results: Two-way ANOVA revealed that the effect of sodium ascorbate application on bond strength of adhesive systems to NaOCl treated dentin was statistically significant(p<0.05). The bond strength results were significantly influenced by the application of sodium ascorbate (p<0.05) and there was a significant difference between the adhesive systems(p<0.05). Conclusion: Although, statistically significant differences were not demonstrated in all adhesive resin groups, sodium ascorbate application after NaOCl treatment improved the bond strength values.

Oral Presentaions

OP 123 MICROLEAKAGE Of SILORANE-BASED RESIN-COMPOSITES COMPARED WITh DIffERENT METhACRyLATE RESIN-BASED COMPOSITES Authors Kusgoz Adem, Yesilyurt Cemal, Ulker Mustafa, Tanriver Mehmet Karadeniz Technical University Faculty of Dentistry, Department of Pediatric Dentistry, Turkey Aim: The aim of this study was to evaluate the in vitro microleakage of Class II cavity preparations restored with methacrylate resin-based composites and a silorane-based resin composite. Methods and materials: Eighty standardized Class II cavities (3 * 5 * 2 mm) were prepared at the mesial and distal surfaces of forty extracted human molars free of visible caries. The teeth were then randomly divided into four groups (n=10) based on the composites (Filtek Supreme, Filtek Z250, Filtek P60, Filtek Silorane) used for restoration. The samples were thermocycled (1000 cycles; between 5°C to 55°C) and immersed in 0.5% basic fuchsine for 24 hours. The teeth were then mesiodistally sectioned and scored under a stereomicroscope. Statistical differences within groups were determined using the KruskalWallis test and paired comparison was made using the MannWhitney U test. (p < 0.05) Results: There was no statistical difference in microleakage at the occlusal margins located in enamel (p > 0.05) in any of the groups. Microleakage at the gingival margins showed significant differences among all groups (p < 0.05). The restorations with Silorane showed significantly less dye penetration than Supreme XT, Filtek Z250 and Filtek P60. Conclusion: Silorane-based composite demonstrated significant reduction in microleakage compared with the other resin-based composites at the gingival margin.

OP 122 EffECT Of SODIUM ASCORBATE ON BOND STRENGTh Of DIffERENT ADhESIVE SySTEMS TO NaOCl TREATED DENTIN Authors Cigdem Celik*, Selim Erkut*, Kamran Gulsahi*, Kivanc Yamanel*, Cigdem Kucukesmen** * Baskent University, Turkey **Suleyman Demirel University, Turkey Purpose: The aim of this study was to evaluate the effects of sodium ascorbate on bond strength of different adhesive systems to NaOCl treated dentin. Methods: Eighty extracted molar teeth were used in the study. The buccal enamel surfaces were removed to obtain a flat dentin surface. The teeth were mounted in self-curing resin and dentin surfaces were irrigated with NaOCl for 10 minutes. And then, half of the specimens were treated with sodium ascorbate for 10 minutes. The teeth were randomly assigned to four

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OP 124 ThE COMPARISON Of ThE VICKERS MICROhARDNESS Of TWO DIffERENT ShADES Of DIffERENT COMPOSITE MATERIALS Authors H. Esra Ulker, Muhammet Yalcin, Fatma Kahveci, Abdulkadir Sengun Selcuk University,Faculty of Dentistry,Department of Operative Dentistry, Turkey Objectives: The aim of the study was to examine the Vickers microhardness of four different composites and two diffrent shades of these composites. Materials and methods: The samples were prepared for tests from the opaque (A3) and translucent composite restoration materials; Tetric Evo Ceram (Ivoclar Vivadent), Premise (Kerr), Filtek Supreme (3M ESPE), Clearfil Majesty (Kuraray) in standard teflon disks (2x5mm). Ten specimens per group were cured for 20 s using blue light emitting diodes Elipar FreeLight II (3MESPE). Specimens were stored in water (dark, 24 h, 37°C). After polishing (1200 grit), VHN was determined superficially and bottom of composite block. Test specimens of each material were submitted to the Vickers microhardness test for 10 seconds at a load of 100 gf. The data were submitted to the statistically analyzed. Results: Clearfil Majesty had the highest and Tetric Evo Ceram had the lowest values, both upper and lower parts. Only Clearfil Majesty translucent group of upper and lower parts were statistically similar (p>0.05). All other composite groups showed statistically difference between in lower and upper parts of 2 mm (p<0.05). A3 shade of all tested materials showed higher micro hardness than translucent shades (p<0.05) Conclusion: Different shades affect the micro hardness of the composite restoration materials. The thickness of composite material is very critical to obtain optimal polymerization. That is, VHN was influenced by depth for especially A3 shade. Key words: composite. Microhardness test, translucent, opaque

clinical performance of a nanofilled composite resin in noncarious cervical lesions. Methods: Twenty-six patients with at least 2 non-carious cervical lesions were enrolled in the study. A total of 154 restorations were placed: half polymerized with QTH and half polymerized with LED. Single Bond was used as the adhesive and Filtek Supreme was used as the restorative material for all restorations. The restorations were assessed by two different examiners, using modified Ryge/USPHS criteria at baseline and at 6, 12, 24, and 36 months. The survival rates were analyzed with the Kaplan-Meier estimator and the Log-Rank test, and the statistical analysis was completed using Pearson's chi-square test (p<.05). Results: Twenty patients were available for recall after 3 years and 114 restorations were evaluated (recall rate of 74%). The survival rate was 84% for QTH and LED polymerized restorations. There were no statistically significant differences in survival rates between the light-curing units (p>.05). No significant differences were observed between QTH and LED polymerized restorations in terms of any of the evaluation criteria at the end of 3 years (p>.05). No color change in the restorations was observed and none of them exhibited secondary caries at the end of 3 years. Conclusions: Over the 3-year study period, both curing units, QTH and LED, produced acceptable clinical results in noncarious cervical lesions.

OP 126 EffICACy Of ALL-IN-ONE UNGROUND ENAMEL

ADhESIVE

SySTEMS

ON

Authors Milos Beloica, Carlos Augusto, Ramos Carvalho, Ivana Radovic, Mariam Margvelashvili, Cecilia Goracci, Zoran R. Vulicevic, Marco Ferrari Department of dental materials, Policlinico Le Scotte, University of Siena, Siena, Italy

OP 125 ThE EffECTS Of DIffERENT LIGhT-CURING UNITS ON ThE CLINICAL PERfORMANCE Of NANOfILLED COMPOSITE RESIN RESTORATIONS IN NON-CARIOUS CERVICAL LESIONS: 3-yEAR fOLLOW-UP Authors A. Ruya Yazici*, Cigdem Celik**, Gul Ozgunaltay*, Berrin Dayangac* *Hacettepe University, Turkey **Baskent University, Turkey Purpose: To compare the effects of quartz-tungsten-halogen (QTH) and light-emitting-diode (LED) curing units on the 3-year

Introduction: The acid etching techique has been much improved since its' introduction by Buonocore in 1955. As a result, adhesive systems have evolved to current seventh generation. Self-etch adhesives do not require phosphoric acid etching as a separate step. Nevertheless, while they bond to ground enamel satisfactorily, adhesion of these systems to unground enamel remains elusive. Purpose: The aim of this study was to determine the microtensile bond strength (TBS) of three all-in-one adhesives to unground enamel, using an etch-and-rinse adhesive system as control. Materials and Methods: Three all-in-one adhesives (Bond Force, AdheSE One and Xeno V) were compared to etch and rinse adhesive (Prime&Bond NT) as a control. Composite resin build-

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ups were made on the buccal enamel surfaces, approximately 6 mm in height, using the proprietary resin composite with each tested adhesive. All the bonded specimens were stored for 24h (37°C and 100% humidity) before testing. In each group four specimens were further processed for TBS test and one specimen was used for microscopic evaluation of the adhesive interface. Results: The TBS was influenced by the type of adhesive system (p<0.05). The etch-and-rinse adhesive achieved the highest bond strength to unground enamel (p<0.05). No statistically significant differences in bond strength were found among the all-in-one adhesives (p>0.05). Conclusions: The tested all-in-one adhesives did not differ in their bonding effectiveness to unground enamel. The etch-andrinse adhesive tested as control resulted in significantly higher bond strength than all-in-one adhesives. Key words: All-in-one adhesives, unground, enamel, microtensile bond strength test

Oral Presentaions

OP 127 EffECT Of CARBAMIDE PEROXIDE BLEAChING AGENT ON SURfACE ROUGhNESS Of RESIN COMPOSITES Authors Bulem Yuzugullu, Cigdem Celik, Selim Erkut Baskent University, Faculty of Dentistry, Turkey Objective: The aim of the study was to evaluate the effect of 20% carbamide peroxide home bleaching agent on surface roughness of a nanofil, nanoceramic and microhybrid resin composite. Material and Methods: 42 specimens were prepared from each restorative material (Filtek Supreme XT, Ceram-X Mono, Aelite All Purpose Body) which were then randomly divided into two groups (n=21). While in the first group Opalescence PF %20 was applied for 6 hours for 8 days, the other group was stored in distilled water. Surface roughness values (Ra) were measured for all specimens. Data were analized using Kruskal Wallis test and Wilcoxon signed rank test (p<0.05). Results: There was no statistically significant difference among surface roughness values of bleached and non-bleached Aelite All Purpose Body (p=0.243), Ceram-X Mono (p=0.852) and Filtek Supreme XT (p=0.116) groups. Conclusion: The surface roughness of nanofil, nanoceramic and microhybrid composite resins was not effected with the use of highly concentrated carbamide peroxide home bleaching agent.

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PP 001 A CONSERVATVE TREATMENT fOR MSSNG ANTEROR TEETh: fBER RENfORCED BRDGES Authors Kivanc Utku Ulusoy*, Erdal Eroglub** *Research Assistant, Department of Prosthodontics, Faculty of Dentistry, Süleyman Demirel University, Isparta, Turkey **Assistant Professor, Department of Prosthodontics, Faculty of Dentistry, Süleyman Demirel University, Isparta, Turkey An eighteen years old female patient with congenital bilateral missing mandibular lateral incisors referred to our clinic after orthodontic treatment. A fiber reinforced bridge was found applicable for the choice of restoration type. Fiber reinforced resin-bonded bridge offers a conservative, esthetic, and metalfree tooth replacement. Other advantages include reduction of cost compared to conventional bridges, saving of time, elimination of second visit, ease of application, absence of metal allergy, ease of cleaning, and naturalness of feel. This study presents a technique for fabricating directly applied resin-bonded fiber reinforced bridges. The technique provides a simple method for creating a better pontic­ridge relation and improved overall esthetics. If sufficient space is available for pontics, this technique can achieve more promising results. Additionally, by choosing the appropriate colored acrylic denture teeth, poor esthetic results can be avoided. Elimination of the polishing and finishing procedures for the prefabricated pontics are also adds of this procedure. In this technique, colored acrylic denture teeth reduced bucco-lingually for available space on patient's dental model. Retention grooves were prepared and glass reinforced fiber (everstick, Stick Tech Ltd., Finland) was adjusted on the prepared pontics groove and extended to at least 2/3 mesiodistal length of adjacent teeth. Flowable composite was used to make bond between fiber and acrylic pontics. Prior to bridge cementation with resin cement, % 37 phosphoric acid gel and adhesive resins applied according to the manufacturer's instructions.

In addition, light ­ curing incisor and dentin materials in a paste form are utilized for making adjustments, such as occlusal modifications are cervical extensions. Furthermore, appropriate surface conditioning is a prerequisite to producing a bond between the different types of material. The bond plays a decisive part in the failure or success of denture tooth characterizations and modifications. Key words: aesthetic tooth, dentin material, cervical extension.

PP 003 ACCIDENTAL INGESTION Of A fIXED PARTIAL DENTURE - A CASE REPORT Authors Psimma Zoi, Petsa Eleni, Psimma Christina Aristotle University Of Thessaloniki, Greece Introduction: A documented hazard associated with dental treatment is the possible aspiration or ingestion of foreign bodies and the related complications. Purpose: To report a case of accidental ingestion of a fixed partial denture and discuss diagnosis, treatment, predisposing factors and preventive measures. Case report: A 58-year-old female patient presented at the dental clinic in need of an endodontic treatment at tooth 45, which served as an abutment for a 4-unit fixed partial denture. The partial denture was removed during the first appointment and temporarily re-cemented for the interappointment period. The patient failed to appear at the next appointment and contacted the clinic 38 days later claiming she had ingested the partial denture. She was immediately referred to a hospital for medical and radiographic evaluation. The patient was asymptomatic. Chest and abdominal radiographs revealed that the metal framework was located in the gastrointestinal system. The patient was scheduled for daily follow-up and was advised to examine her stool. Five days later the restoration was identified in the patient's stool. Abdominal radiography confirmed that the restoration was no longer in the gastrointestinal system. No further complications or symptoms were reported. Discussion: Depending on the size, shape and flexibility, most of the objects that are ingested pass uneventfully through the gastrointestinal system within 2-12 days. However, there is a possibility of impaction, haemorrhage, septic abscess, or perforation of the gastrointestinal tract, which may require surgical removal of the object. Conclusion: Prevention is the best approach, but proper management of such an incident is crucial to the health and safety of the patient.

Poster Presentaions

PP 002 INDIVIDUALIZATION Of PREfABRICATED DENTURE TEETh Author Edit Xhajanka, Alketa Qafmolla Faculty of Medicine, Department of Stomatology, Tirana, Albania The increasing aesthetic requirements placed on removable denture prosthetics necessitate the individualization of resin denture teeth. Modern C & B materials appear to be the obvious for such uses. Particularly those characterization sets which comprise light ­ curing, low ­ viscosity materials are gaining in popularity.

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PP 004 AESThETIC MANAGEMENT Of SEVERELy DISCOLORED TEETh WITh CONSERVATIVE APPROAChES: REPORT Of TWO VITAL BLEAChING CASES Authors Duygu Akkor, Ali Osman Mavis, Arzu Bayalan Aldemir, Serkan Er, Perihan Ozyurt Ankara University Faculty of Dentistry, Turkey Aim: To report two cases of successfull vital bleaching treatment of teeth which are severely discolored. Introduction: The pursuit of looking good, man has always tried to beautify his face. Since the alignment and appearance of teeth influence the personality, they have received considerable attention. The desire for a brighter smile with whiter teeth has become popular in today\'s society and for this reason there is a growing interest in bleaching applications. Case 1: Male patient 31 years old has visited our dental practice for severely discoloured maxillary incisors. Initial aesthetic management of these teeth was conservative, including inoffice tooth whitening, and take-home whitening. Dark brown staining of the teeth was reduced successfully without the need for mechanical preparation of the enamel.Mechanical preperation was needed for further improvement of aesthetics but the patient was pleased with the colour of the teeth. Case 2: Male patient 35 years old has presented with severely discoloured maxillary incisors with hipocalsific areas on enamels. Tooth shade lightening was achieved by using a %38 hydrogen peroxide gel office bleaching kit. The patient reached a higher shade value and a lower shade chroma in a short time. Results: Tooth whitening is a form of dental treatment and should be completed as part of a comprehensive treatment plan developed by a dentist after an oral examination. When used appropriately, tooth-whitening methods are safe and effective. Key Words: Vital bleaching, hydrogen peroxide, tooth discoloration

The study was realised on 220 patients,different ages,gender. The checkups were made on 6 and 12 months.The results were statistically analyzed. It can be concluded that EXTRACAP by GALENIKA is material with exellent physical characteristics,easy application technique,very good adhesion,which meet dentists and patients requirements,respectivly. Despite toxcity scares and the introduction of universal resin composites,amalgam is still widely used,mainly because the use of resin composites in posterior teete is notallowed under MH RS regulation.

PP 006 AN EASThETIC APPROACh TO CAST POST BUILUPS Authors Todorov R, Petkova D, Todorov G Faculty of Dental Medicine - Plovdiv, Bulgaria The indisputable aesthetic characteristics and easy technology processing of the laboratory composites establish them as a kind of an alternative in the field of restorative dentistry. Our aim is to determine the appliance of the laboratory aesthetic composites in combination with monolith buildups for tooth reconstruction We used monolith intraradicular and coronal metal frameworks, covered with aesthetic incrustation. We combined base metal alloy with Signum+ laboratory composite from Heraeus Kulzer. The achieved good results through that method gave us a reason to propose it for aesthetic cover of monolith buildups as an alternative in the contemporary dental practice.

PP 007 ANTIBACTERIAL ACTIVITy Of DIffERENT SELf-ETChING PRIMERS AND ADhESIVES Authors Aylin Akbay-Oba, Isil Saroglu-Sonmez, Sedef Gocmen, Merve Erkmen, Murat Yildirim University Of Kirikkale, School Of Dentistry, Department Of Pediatric Dentistry, Turkey Self-etching primers are considered the new generation of dentin bonding systems that modify and incorporate the bacteria-containing smear layer into their bonding mechanism. Purpose: The aim of this study was to evaluate the antibacterial effects of different self-etching primer/adhesives on Streptococcus mutans (S. mutans), Lactobacillus acidophilus (L. acidophilus) and Lactobacillus casei (L. casei). Materials and Method: The antibacterial effects of Clearfil Protect Bond Primer and Bonding agent; Adper Easy Bond and Xeno V were tested against standart strains of S. mutans, L. casei and L. acidophilus

PP 005 AMALGAM - OUR EXPERIENCE Authors Mladen Behara Private practice Dr. Mlaen Behara Cacak, Serbia An Amalgam is a mixture of Hg and another metal.Dental amalgam is made by mixing together Hg with a powdered silver-tin alloy to prouce a plastic mass that can be packed into a preparation before setting. The aim of this poster is to present our experience of Amalgam EXTRACAP by GALENIKA as material was usedin the dental office for a period of 3 years(2006-2008).

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using the disk diffusion method. Chlorhex was used as a positive control material, consisting of 2% chlorhexidine. Standart filter paper disks (n=6) impregnated with 20 µl of each material were prepared. After incubation at 37°C for 48 hours, zones of inhibited bacterial growth were measured in milimeters. Data were analyzed using ANOVA, Friedman test and Kruskal-Wallis test. Results: The difference between antibacterial effect of the tested material groups were statistically significant for each bacterial strains (p < 0,05). The results indicated that Clearfil Protect Bond Primer had the strongest effect against the S. mutans and L. casei, and Xeno V produced the largest inhibition zone for L. acidophilus among the test materials. Clearfil Protect Bond Primer was showed an antibacterial effect closest to chlorhexidine for S. Mutans and L. Casei. Conclusions: Clearfil Protect Bond and Xeno V may be beneficial in eliminating remaining bacteria after cavity preparation.

The aim of this study was to investigate the composite to composite shear bond strength after using resins with different temperatures as the repairing material. Twenty-eight composite discs (6x2 mm) of Z 250 (3M Espe) were prepared and embeded in acrylic resin. They were stored in distilled water at 37° C for one month and divided into 4 groups (n=7). In all groups, the same composite resin (Gradia Direct Anterior)(GC Corp) was used as a repairing material. In group I, resin composite used as a repairing material was at the room temperature (23° C). In group II, resin composite heated at 37° C by resin heated unit (Calset) (AdDent) was used, in group III, composite heated at 54° C; in group IV, composite heated at 68° C with the same apparatus. During the application of the composite, the material was placed in a transparent (Plexiglass) mould 4 mm in diameter and 2 mm in height. The samples were incubated at 37° C for 24 hours. Then they were subjected to a shear loading at a constant crosshead speed of 1 mm/min. using a Universal testing machine (Instron). The value at which fracture occured was noted. Statistical analysis was performed using One Way ANOVA. No statistically significant difference was determined between the groups.

PP 008 ANTIBACTERIAL EffECT Of SILORANE-BASED RESIN COMPOSITES Authors G.Gur, G. Demirel, N. Altanlar Ankara University, Faculty of Dentistry, Turkey The aim of the study was to compare the antibacterial effect of one novel silorane-based and two widely used conventional methacrylate-based resin composites. Specimens of restoratives Filtek Silorane, Filtek Z250, and Spectrum TPH were prepared (10.0-mm diameter, 2.0-mm height). A specimen of bacteria culture was taken from the plaque formed on the patient`s teeth. Agar diffusion test was used to evaluate antibacterial properties. Samples were placed on agar plates seeded with microorganisms and then antibacterial activity was evaluated by taking gauge of inhibition zone around the specimen discs. Antibacterial effect of each composite was evaluated by blindly measuring mean diameter (mm) of complete inhibition zones of bacterial growth around the specimen discs. Statistical analysis was carried to determine the different antibacterial activity. Key words: Silorane,antibacterial effect, S.mutans PP 010 EffECT Of VARIOUS LIQUIDS ON ThE SURfACE hARDNESS Of TWO COMPOSITES POLyMERIZED WITh DIffERENT LIGhT CURING UNITS Authors Deliktas Deniz DDS PHd, Ulusoy Nuran DDS,PHd Ankara University Faculty of Dentistry, Department of Restorative Dentistry, Turkey Introduction: It is reported that aesthetic restorative materials become softened with exposure to various food and liquids. Purpose: The aim of this study was to evaluate the effect of various food simulating liquids on the surface hardness of a hybrid and a nanohybrid resin composite polymerized by two different light curing units. Materials and method: A hybrid (Charisma) and nanohybrid resin composite (Grandio) were polymerized with halogen and LED light curing in 200 test cavities on plexiglass molds. The specimens were divided into 20 groups and finished with discs. All specimens were stored at 37°C in air (control), distilled water, heptane, %75 ethanol-water solution and citric acid solution for one week. Surface hardness measurements were made from three different points of each specimen.The data were subjected to statistical analysis using three-way ANOVA and Duncan's Multiple Range test at a significance level of p<0,01. Results: The effect of air and food simulating liquids on surface hardness of resin composites varied according to the curing units and composites (p<0,01). The lowest surface hardness values were found in %75 ethanol-water solution groups for

Poster Presentaions

PP 009 EffECT Of PRE-hEATING Of REPAIRING RESIN ON COMPOSITE REPAIR BONDS Authors Asist. Prof. Kagan Gokce, Asist. Prof. Mustafa Ersoy, Prof. Hilmi Sabuncu Yeditepe University Faculty of Dentistry, Istanbul, Turkey

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both resin composites tested. Halogen and LED light curing of nanohybrid resin specimens showed higher hardness values than hybrid resin composite; except for the specimens cured with halogen light and stored in heptane solution. Conclusion: Within the limitations of this study, it may be concluded that the hardness of esthetic restorative materials are influenced by the food-simulating solutions in vitro.

Introduction: The immediate restoration of an extracted anterior tooth can be achieved by bonding the patient's own tooth to the adjacent teeth using fiber reinforced ribbon and resin composite. These two case reports present an innovative affordable chairside procedure in which Ribbond Multi-Purpose Bondable Reinforcement Ribbon (Ribbond Inc., Seattle, Washington, USA) is used. Case 1: A 40 year old female was referred for fixed prosthesis of a maxillary lateral incisor after the extraction caused by excessive periodontal defect. Immediately after extraction, the tooth was sectioned from the cemento-enamel junction and adjusted to the space. A groove was prepared in the mid-palatal section of the neighboring and the pontic teeth. The adjacent central and canine teeth's mid-palatal and proximal sections were prepared in the following manner: clean the teeth with prophy jet, acidetch the surfaces with 37% phosphoric acid, apply the bonding agent, light-polymerize the bonding agent for 10 seconds, place a thin layer of composite resin, wet the required length of the ribbon by unfilled resin, place the wetted ribbon on the composite coated palatal surfaces and embed, light-polymerize the adjusted ribbon for 40 seconds from various directions, and cover the ribbon with another layer of composite resin, finish and polish the excess material.

PP 011 EffECTS Of DIffERENT CERAMIC AND COMPOSITE MATERIALS ON STRESS DISTRIBUTION IN INLAy AND ONLAy CAVITIES: 3-D fINITE ELEMENT ANALySIS Authors Yamanel Kivanc, Caglar Alper, Gulsahi Kamran, Ozden Utku Ahmet Baskent University, School of Dentistry, Department of Conservative Dentistry, Ankara, Turkey Restoration of extensive cavities in posterior teeth is still a big problem. To reduce tissue loss of the natural teeth and improve aesthetic results, inlay and onlay restorations are good treatment choices. Previous studies on strength of teeth reconstructed with ceramic or composite resin inlays and onlays have not resolved which restoration material and cavity design provides the highest strength. The aim of this paper is to evaluate, utilizing three-dimensional analysis of the finite elements, what the effect of cavity design and material used could be on the stress distribution in the tooth structures and restorative materials. To this aim two different nanofilled composite resin restorative materials and two different all ceramic materials were used (Filtek Supreme XT, Grandio, IPS 2, 3M Lava). A permanent right lower first molar tooth was modelled with enamel and dentin sets. 3-D inlay and onlay cavity designs were created. Von Mises, compressive and tensile stresses were evaluated on restorative material, core, enamel and dentin separately. Results of the study showed that; materials that have low elasticity modulus transferred more stress to tooth structures. All ceramic inlay and onlay materials tested, transferred less stresses to tooth structures than composite restoratives. Onlay design protects remaining tooth structures more successively than inlay design.

Conclusion: Both of the patients were satisfied with this one visit and inexpensive treatment option.

PP 013 fRACTURE RESISTANCE Of ENDODONTICALLy TREATED TEETh RESTORED WITh ORMOCER AND NANOfIL COMPOSITE RESINS Authors Perihan Ozyurt, Berna Aslan, Duygu Akkor Ankara University, Faculty of Dentistry, Turkey Aim: The aim of this study is to measure the fracture resistance of endodontically treated maxillary premolars restored with ormocer and nanofil composite resins. Materials and Methods: Fourty sound caries-free human maxillary premolar teeth were used. The teeth were endodontically treated and MOD cavities prepared. The prepared teeth were randomly divided into four groups of 10 teeth. Each group was restored with four different restorative materials (one ormocer, one nanofil, one hybrid, one high copper amalgam). Copper rings were filled with self-curing polymethylmetacrylate resin and the teeth were placed into resin up to level of CEJ. The copper rings with the teeth were placed into a Universal Testing Machine and the buccal walls were subjected to a slowly increasing compressive force untill fracture occured. The force of fracture of the various groups compared.

PP 012 ESThETIC MANAGEMENT Of EXTRACTED ANTERIOR TEETh USING fIBER REINfORCED RIBBON AND RESIN COMPOSITES Authors Yamanel Kivanc, Onay Emel Olga, Arhun Neslihan, Ungor Mete Baskent University School of Dentistry Department of Conservative Dentistry and Endodontics, Ankara, Turkey

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Case 2: A 15 year old man's maxillary right central tooth was also extracted because of external resorption. The adjacent teeth and the extracted tooth were prepared in the same protocol mentioned above.

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Proceedings of BaSS 2009

Results: There was no statistically significant difference between the groups. Conclusion: There was no difference in the fracture resistance of endodontically treated teeth following restoration with amalgam and composite restorative materials. Within the limits of this study we can suggest that resins used in this study are good alternative materials to amalgam. Key Words: fracture resistance, composite resin, endodontically treated teeth

PP 015 INDIRECT COMPOSITE RESTORATION Of ENDODONTICALLy TREATED TEETh Authors Kyriazos Alkis, Lanara Rodopi, Lazaridis Georgios Aristotle University Of Thessaloniki, Greece In some cases of endodontically treated teeth, a considerable amount of tooth structure is lost before or during the endodontic treatment. This makes the retention of a subsequent restoration problematic and increases the likelihood of fracture during function. The traditional restoration includes a metal or fiberpost, used to retain a core that replaces the lost tooth structure and results in the shape of a conventional preparation on which a crown can be fabricated. Alternatively, an amalgam or composite restoration or a core build-up can be chosen, depending on the position of the tooth (anterior or posterior) and the amount of the lost tooth substance. In the last decade, however, indirect composite restorations begun to gain ground, due to the fact that they are fabricated in the laboratory. This improves their physical properties and reduces the polymerization shrinkage. The aim of this presentation is to focus on the advantages and disadvantages of the indirect composite restorations and their appliance in the restoration of endodontically treated teeth. There are only few long-term clinical studies, mostly referring to the use of microfill composites in the fabrication of inlays and onlays. Their results show a minimal failure percentage of 0-11.8 % (in five-year studies), whereas the survival rate after 4 years is about 82%.

PP 014 IN-OffICE BLEAChING Of VITAL TEETh - CASE REPORT Authors Veljko Kolak, Milica Popovic, Ankica Jakovljevic Faculty of Stomatology, Pancevo, Serbia

Poster Presentaions

Bleaching procedures have gained popularity as conservative techniques to lighten natural teeth in order to improve the harmony of the smile. There are many professionally applied tooth whitening products. This report describes the bleaching treatment discoloration used active agents Hydrogen Peroxide 35% with a laser. The purpose of this paper is to show a case of a young male patient. The patient had good oral hygiene and health and external stains enamel discoloration. Method bleaching vital teeth was absolutely indicated. Laser have been used during tooth whitening procedures to enhance the action of the whitening agent. The following materials were used: "Doctor Smile LWS" Hydrogen Peroxide Gel, "Doctor Smile LWS" Isolation Dam, Diode D15 Classic laser (all products of Lambda Scientifica srl). Before the bleaching procedure, teeth were carefully brushed. During chairside bleaching, isolation dam was applied onto gums to protect the oral soft tissues. A bleaching agent is then applied over frontal surface of the teeth with 2 mm thickness, and a laser used to activate Hydrogen Peroxide and enhance the action of the agent. This procedure is called chairside bleaching and each visit may take from 30 minutes to one hour. Verification bleaching effect on discolored teeth was reviewed before and after the treatment using Vita (Vita Zahnfabrik) colour scale. A result was brightness-change of the three undertone colours. This bleaching technique is safe, reliable and probably the fastest and most effective way to achieve natural white teeth.

PP 016 PREDICTABLE RESTORATIONS

ASThETIC

RESULTS

IN

DIRECT

Authors Assoc. Prof. Snezhanka Topalova-Pirinska, Dr. Lili Doichinova, Dr. Radoslava Pirinska Faculty of Dental Medicine, Medical University, Sofia, Bulgaria With the advancement of esthetic dentistry, an increasing number of patients expect undetectable and long-lasting restorations of their teeth. The contemporary composite materials require a layering technique in order to obtain color adaptation, transparency and "chameleon" effect with respect to the natural teeth structures, regardless of the complexity of the clinical case. The aim of the study is to make a prospective assessment of the esthetic restorations with GC Gradia Direct. The restorations replacing the lost tooth structure are observed for a period of one year and assessed according to the following criteria: shape, surface, color, and marginal adaptation. The results are documented with photos and demonstrate high esthetics and quality of the restorations. The contemporary direct adhesive materials allow for predictable and certain esthetic results.

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PP 017 RESIN COMPOSITE BIO-MEChANICAL MOLDEL fOR INVESTIGATION Of POLyMERIZATION CONTRACTION Authors Blazic L., Pantelic D., Savic- Sevic S., Vasiljevic D., Puskar T., Kantardzic I. University of Novi Sad, Faculty of Medicine, Clinic of Dentistry and Institute of Physics, Belgrade, Zemun, Serbia Introduction: Due to increase in esthetics, light-curing resin composites have become the materials of choice for posterior tooth restorations. Also, these materials can be used for manufacturing bio-mechanical models for different research purposes. Purpose: The purpose of the present work was fabrication of identical Class II MOD (mesio-occlusal-distal) models in resin composite. Materials and methods: Simplifed bio-mechanical model of a tooth with MOD cavity was produced from a model made of aluminium and used to produce a mould in silicone resin. An appropriate silicon mould can be used to produce any number of almost identical casts. Resin restorative (Te Econom, Ivoclar Vivadent) was inserted into the mould in horizontal layers and polymerized with an LED light-curing unit (Bluephase 5, Ivoclar Viavadent). The models were reconstructed with the same composite resin and a real-time holographic interferometry was used to analyze shrinkage of restoration during polymerization and its effect on the surrounding material. Results: Photo-activated polymerization of Class II composite restoration resulted in the deformation of a surrounding structure made of composite material. A number of fabricated casts can be used also for analyzing developing stress fields for various clinical methods such as different filling techniques and light-curing regimes. Conclusion: The proposed method might be very usefull in polymerization shrinkage related research. Deformation of a restored teeth and tooth-composite structure could be investigated as well.

The polymerization shrinkage of composite resins results in contraction gaps at the tooth/restoration gingival interface that lead to microleakage.The placement technique is considered to decrease the adverse effects of polymerisation shrinkage. The purpose of this study was to assess the quality of the marginal sealing at the gingival wall in the posterior proximal resin composite restorations after four placement techniques. Materials and methods.Twenty human sound premolars were selected. On both proximal surfaces were prepared fourty standard slot-style cavities with the gingival margins located 1 mm. apical to the CEJ. The cavities were restored with a resin composite, Filtek Supreme XT (3M ESPE) and a self-etching adhesive system, Adper Easy One(3M ESPE); the specimens have been devided into 4 groups based on the restorative technique utilized: bulk, orizontal incremental, oblique incremental and centripetal. The specimens were immersed in 10% blue methylen for 48 hours at 37OC. Sectioned specimens were examined under a microscope Zeiss(Iena, Germany)X20 and the values obtained for dye penetration were assessed according to a 0 to 3 scale. Data were analyzed using the 2 test which estableshes the correlations between the restoration technique and the values of microleakage(p<0.05). Results.For the first method of the restoration it was found strong corelation with the value 3 of dye penetration and for third method with the value 0 of microleakage.Conclusion. None of the four methods of restoration utilized in this study did not prevent microleakage and the best marginal seal was obtained with oblique incremental technique.

PP 019 STUDy REGARDING MICROCRySTALLIZATION AND REMINERALISATION ABILITy Of SALIVA TO PATIENTS WITh DIABETES Authors Pancu Galina, Gianina Iovan, Moldovanu Antonia, Topoliceanu Claudiu, Gheorghe Angela. Department Odontology and Periodontology, Dental Medicine School, U.M.F. "Gr.T.Popa" Iasi, Romania Tests regarding micromorphological aspects of oral fluid can be very useful to establish a complete oral diagnostic and to optimize further preventive and therapeutic strategies.

PP 018 STUDy REGARDING ThE ASSESSMENT Of ThE MARGINAL SEALING IN ThE POSTERIOR PROXIMAL COMPOSITE RESIN RESTORATIONS DEPENDING ON ThE PLACEMENT TEChNIQUES Authors Sorin Andrian, Simona Stoleriu, Claudiu Topoliceanu, Andrei Georgescu, Dana Apostolide School of Dental Medicine, "Gr. T. Popa" University of Medicine and Pharmacy, Iasi, Romania

The aim of this study is to research some aspects of salivary microcrystallization and remineralisation ability of saliva to patients with diabetes. These studies will allow an assessment of salivary factor in carious disease. Results of study will help to optimize individual preventive and therapeutic measures. Materials and methods: Study group included 30 patients with diabetes with age ranging between 16 and 45 years. From every patient 0,5 ml unstimulated saliva was collected. Microcrystallization and mineralization properties of saliva were assessed through Leus method modified by Pozdeeva.

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Results: Patients with diabetes present aspects of microcrystallization type II or type III in 78% percent. The saliva microcrystallization is absent or very low, diffuse, being present as crystals conglomerates, separate crystals or needleended cristals distributed uniform or as clusters of crystals located in peripherical areas of saliva drop. The values of IMK (microcrystallization index) were ranging between 0,6 and 0.3, expressing a saliva with low or medium remineralisation properties. Conclusions: The changes of IMK recorded for patients with diabetes can orientate the choice of the dentist toward individual preventive and therapeutic measures in carious disease management. Key words: salivary tests, dental caries, diabetes mellitus

PP 021 ThE EffECT Of COMPOSITE ShADE ON DEPTh Of CURE fOR LED AND QTh IRRADIATION. Authors D. Dionysopoulos, E. Koliniotou ­ Koumpia, P. Gerasimou, K. Tolidis. Aristotle University of Thessaloniki, Department of Operative Dentisrty, Greece Objectives: The purpose of this study was to assess the effect of shade on depth of cure of composite resins using three different light sources. Methods: Composite resins Filtek Supreme (3M ESPE), shades A1B, A2B, A3B, A3,5B, A2D and YT were used. Three lights sources were used in this study: Ledemetron (Kerr), Elipar 2500 (3M ESPE), Elipar Visio (3M ESPE). Depth of cure was tested according to ISO 4049. A stainless steel mould (8mm long, 4mm in diameter) was used for the preparation of the cylindrical resin specimens. The mould was filled with the test material and light cured with the light curing devices. Specimens were removed from the mould and soft restorative material was removed from the bottom of the mould. Height of the cylinder of the cured material was measured with a micrometer to an accuracy of ±0.01mm. All results were statistically analyzed with analysis of variance (One Way ANOVA and Two Way ANOVA) and Bonferroni test. Results: Depth of cure values ranged from 3.04±0.09 mm (A2D, Elipar Visio) to 6.43±0.56 mm (A1, Elipar 2500). Results showed statistically significant difference among shades, in favor of the lighter shades. Light curing unit Elipar 2500 exhibited statistically higher values than Ledemetron and Elipar Visio. Conclusion: Depth of cure of composite resins is reduced when a darker shade is used irrespective of light curing unit.

PP 020 SURfACE fINISh Of AESThETIC RESTORATIVE MATERIALS Authors D. Dionysopoulos, E. Koliniotou-Koumpia, P. Dionysopoulos Aristotle University of Thessaloniki, Department of Operative Dentistry, Greece Regardless of cavity class and location, a smooth surface finish is clinically important as it determines the quality of restorations. A highly polished surface minimizes plaque accumulation, gingival irritation and color change. Objectives: The aim of this study was to compare the surface roughness of two nanohybrids (TetricEvo Ceram, Vivadent and Gradio, Voco), a resin ­ modified glass ionomer (Fuji II LC, GC), a glass ionomer (Fuji IX GP Fast, GC) and a compomer (Compoglass, Vivadent) after polishing with three polishing systems. Materials and Methods: 32 cylindrical specimens of each material were cured under mylar strip in cylindrical molds. All materials were finished with multifluted carbide burs, except for the matrix strip samples and then were polished using one of three finishing systems: Sof-Lex polishing discs (3M- ESPE), Optapol polishing system (Ivoclar, Vivadent) and Diacomp polishing system (EVE). The surface roughness of each specimen was determined using a profilometer (Mitutoyo SJ 201) and by observation under a Scanning Electron Microscope (JEOL, J.S.M. 840 Tokyo, Japan). Statistical Analysis was performed using two ­ way ANOVA and Dunnett's test. Results: The mylar strip group had the lowest roughness value (Ra) and was significantly different from all of polishing procedures (p<0.05). The surface finish of glass ionomers and compomer was significantly poorer than the composites evaluated (p<0.05). Conclusion: The surface finish of glass ionomers and compomer was significantly poorer than composites.

Poster Presentaions

PP 022 ThE EffECT Of RESIN COMPOSITE PRE-hEATING ON ThE SURfACE ROUGhNESS Authors Assist. Prof. Mustafa Ersoy, Assist. Prof. Kagan Gokce, Prof. Hilmi Sabuncu Yeditepe University Faculty of Dentistry, Istanbul, Turkey The porpose of this study was to evaluate the surface roughness of a new composite material (Filtek Silorane) (3M Espe), at room temperature (23°C), or pre-heated at 37°C, 54°C and 68°C. 9 composite discs (n=9) (6x2 mm) were prepared from Filtek Silorane at room temperature or pre-heated to a temperature of 37°C, 54°C or 68°C by Calset (Composite Heater Unit) (AdDent). The samples were polymerized by Optilux 501 light curing device for 20 seconds. Then the prepared samples were incubated at 37°C for 24 hours in distilled water. Following

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this procedure, surface roughness measurements (Perthometer Mahr, Germany) were done. Statistical analysis was performed using One Way ANOVA. The samples which were prepared with the resin pre-heated to a temperature of 68°C showed significantly less roughness values than the samples prepared with the composite at room temperature. No statistically significant difference was determined between the composite used at room temperature or pre-heated to a temperature of 37°C and 54°C.

in RPMI culture medium at a concentration of 1x106 cell ml-1. Eluates from the test materials were added to a final volume of 2 ml and cells were grown for 72h at 37°C. Supernatant was collected and used for measuring IL-2, IL-6, IL-10 and TNF-alpha by ELISA. Results: MTA and Portland cement at the four concentrations tested were not able to induce secretion of IL-6, IL-10 and TNFalpha; by lymphocytes revealing insignificant proinflammatory properties. IL-2 concentration in spent culture supernatants ranged between 0.91 ­ 1.24pg ml-1 that was significantly lower than positive controls. No statistically significant difference was observed between MTA and Portland cement in IL-2 induction. Conclusion: Both ProRoot MTA and Portland cement were very low inducers of cytokine secretion which highlights the comparable features of the two materials and their safety when in contact with vital tissues.

PP 023 ThE TREATMENT Of ThE EXTERNAL INfLAMMATORy ROOT RESORPTION USING MTA: 2 yEARS fOLLOW-UP Authors Kusgoz Adem, Yildirim Tahsin, Tanriver Mehmet, Kedici Cemile Karadeniz Technical University, Faculty of Dentistry, Department of Restorative dentistry Trabzon, Turkey External inflammatory root resorption is one of the consequences of dental trauma. The prognosis of these teeth were considered poor. This case report presents the external resorptive defect of the left maxillary lateral incisor due to trauma, its treatment with mineral trioxide aggregate (MTA) and two years follow-up. The tooth was showed succesfull clinical and radiographic healing after two years follow-up. So it can be concluded that MTA can be used in nonsurgical treatment of external root resorption.

PP 025 EVALUATION Of ThE BIOCOMPATIBILITy Of ALPhA TRICALCIUM PhOSPhATE Authors D. Stojanovic1, K. Obradovic-Djuricic2, D. Markovic2, Dj. Janackovic3, Z.Kojic4 1 Stomatology clinique Dr Dobrica, Belgrade 2 Faculty of Dentistry, University of Belgrade 3 Faculty of Technology and Metallurgy, University of Belgrade 4 School of Medicine, University of Belgrade In this study, the biocompatibility of alpha tricalcium phosphate (TCP) was systematically investigated, which included cell culture cytotoxicity assay, chromosome aberration assay (micronucleus test) and implant histological evaluation. Experiments were carried out by the recommendations of international standards for testing biocompatibility ISO 10993. The results showed a mild concentration-dependent cyto- and genotoxic effect of TCP. Results of in vivo investigations indicate that inflammatory potential of alpha tricalcium phosphate, was not significantly differed between the groups (p>0.05). After in vivo tests, it was possible to observe changes in the terms of the phase transition in hydroxiapatite phase for the alpha tricalcium phosphate implanted, while phase changes of the hydroxiapatite were not found. The subject of future research may be the mechanism of cytotoxic action of TCP, efficiency in completing the bone defects and clinical research of its biocompatibility.

PP 024 EffECT Of MINERAL TRIOXIDE AGGREGATE AND PORTLAND CEMENT ON CyTOKINE PRODUCTION Authors Iva Stamatova, Milena Filipova, Stoyan Vladimirov, Victoria Sarafian Faculty of Dental Medicine and Department of Biology, Medical University-Plovdiv Introduction: Mineral trioxide aggregate (MTA) remains the firstchoice material to serve several endodontic purposes among which perforation repair being the commonest. However, there are still inconveniences related to its poor handling properties and inappropriately high price. MTA has been reported to share structural similarity with Portland cement. Purpose: The aim of the present study was to compare cytokine production by lymphocytes treated with MTA and Portland cement. Material and Methods: ProRoot MTA (Dentsply, Tulsa Dental, Mo, USA) and Portland cement (Type II, BG) were mixed with distilled water according to manufacturer's instructions and immersed in DMEM cell culture medium for 24h at 37°C. Human lymphocytes were isolated from peripheral blood and grown

PP 026 INVESTIGATION Of CyTOTOXIC EffECT Of ALPhATRICALCIUM PhOSPhATE ON fIBROBLAST CELLS Authors D. Stojanovic1, K. Obradovic-Djuricic2, D. Markovic2, Dj. Janackovic3, Z. Kojic4

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1 Stomatology clinique Dr Dobrica, Belgrade 2 Faculty of Dentistry, University of Belgrade 3 Faculty of Technology and Metallurgy, University of Belgrade 4 School of Medicine, University of Belgrade In this paper, in vitro experiments were performed in order to investigate the quantitative and qualitative dependences of toxic effect of different concentration of calcium-phosphates. Alpha-Ca3(PO4)2 is synthesized by the heating of calcium deficient hydroxyapatyte (CD HAP) synthesized by hydrothermal method. The influence of cytotoxicity of alpha-Ca3(PO4)2 (alpha­TCP) were performed according to ISO 10993-5: 1992 (E) standard on fibroblast cell culture L929. By the observation of degenerative changes on cells, it was found that citotoxic effect is dependent on the concentration of alpha ­TCP added to the cell culture. The toxic effect is found in the concentration range from 200 to 0.5mg/ml of alpha­TCP, and non-toxic in the rage from 0.1 to 0.01 mg/ml.

Conclusion: Two months after the treatment the patient did not experience tooth sensitivity or any other complication associated with her prostheses.

PP 028 ACCIDENTAL INGESTION Of A fIXED PARTIAL DENTURE; A CASE REPORT Authors Psimma Zoi, Petsa Eleni, Psimma Christina Dental School, Aristotle University of Thessaloniki, Greece Introduction: A documented hazard associated with dental treatment is the possible aspiration or ingestion of foreign bodies and the related complications. Purpose: To report a case of accidental ingestion of a fixed partial denture and discuss diagnosis, treatment, predisposing factors and preventive measures.

PP 027 A CASE REPORT Of A PATIENT WITh OLIGODONTIA Authors Ozgur Inan*, Gulce Subasi** Selcuk University, Faculty of Dentistry, Department of Prosthodontics, Konya, Turkey *Professor, Department of Prosthodontics) **Assistant,Department of Prosthodontics) Introduction: Oligodontia is the congenitally absence of six teeth or more, excluding third molars. Patient's age, the condition of retained primary teeth, the number of missing teeth should be considered for the treatment planning.This clinical report described the prosthodontic rehabilitation of a young adult patient with oligodontia. Case report: A 18 year old woman referred to the Seluk University Department of Prosthodontics with a complaint about her appearence. Intra-oral, radiographic examination and dental history revealed that 12 permanent teeth were congenitally missing. She had only 15 permanent teeth and most of her teeth were microdontia type. Firstly orthodontic treatment was suggested to the patient. Implant retained fixed partial denture, metal ceramic or full ceramic restorations were explained to the patient. She couldn't accept orthodontic and implant retained fixed partial denture because of financial problems. Maxillar teeth (13,11,21,23,25,27) and mandıbular teeth (46,45,35,36) were prepared with a shoulder finish line. Impressions of the prepared teeth were made using a vinyl polysiloxane impression material. The maxillary and mandibular cast with trimmed dies of prepared teeth were obtained and mounted onto the articulator using interocclusal records. Maxillary anterior 6 unit, posterior 3 unit and mand;bular 12 unit zirconia bridges were fabricated. Group functional occlusion were constituted in the definitive restorations. The bridges were adjusted and cemented with a resin cement.

Case report: A 58-year-old female patient presented at the dental clinic in need of an endodontic treatment at tooth 45, which served as an abutment for a 4-unit fixed partial denture. The partial denture was removed during the first appointment and temporarily re-cemented for the interappointment period. The patient failed to appear at the next appointment and contacted the clinic 38 days later claiming she had ingested the partial denture. She was immediately referred to a hospital for medical and radiographic evaluation. The patient was asymptomatic. Chest and abdominal radiographs revealed that the metal framework was located in the gastrointestinal system. The patient was scheduled for daily follow-up and was advised to examine her stool. Five days later the restoration was identified in the patient`s stool. Abdominal radiography confirmed that the restoration was no longer in the gastrointestinal system. No further complications or symptoms were reported. Discussion: Depending on the size, shape and flexibility, most of the objects that are ingested pass uneventfully through the gastrointestinal system within 2-12 days. However, there is a possibility of impaction, haemorrhage, septic abscess, or perforation of the gastrointestinal tract, which may require surgical removal of the object. Conclusion: Prevention is the best approach, but proper management of such an incident is crucial to the health and safety of the patient.

Poster Presentaions

PP 029 CASE REPORT: ADVANCE TEChNIQUE fOR REhABILITATING SOfT PALATE DEfECT WITh TOTAL EDENTULOUS PATIENT Authors Mustafa Kocacikli, Ahmet Emre Gulerik, Gokce Soganci

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Institution: Gazi University Faculty of Dentistry Department of Prosthodontics, Ankara, Turkey Introduction: Abnormalities of the soft palate can occur in defferent ways and resulting defects can be grouped in hree categories, congenital, acquired or developmental. The retention is the big problem for the soft palate defect patients who has total prostheses. The patient described 35 years old woman with congenital absence of the soft palate without surgical operation had been performed previously to repair this defect. Result: In our case defect is restored with anterior implant retained total prostheses with soft palate obturator.

To fulfill the goals of prosthetic dental medicine photopolymezing plastic materials are used for the preparation of individual impression spoons, templates and auxiliary devices. Aim: Widening of the photopolymezing plastic application in the immediate prosthetic removable restorations and shortening of the technologic process. Materials and methods: In a presented by us case we demonstrate a one phase clinical fabrication of immediate partial denture of the upper jaw from a photopolymezing plastic (plate size 5 x 4 sm.). The removed frontal ceramic bridge is used for artificial teeth of the construction whose abutments have to be extracted. Good functional and aesthetic results are obtained by the preservation of the old teeth of the patient. Conclusion: Because of the good handling of the material and its easy usage we consider that with the proposed approach PP can be used as a choice of method in clinical practice and thus the laboratory stage can be avoided. Key words: photopolymezing plastic, immediate partial denture

PP 030 CASE REPORT AN ADVANCED SCULPTURING TEChNIQUE fOR fABRICATING AURICULAR PROSThESES Authors Mustafa Kocacikli, Gokce Soganci, Turan Korkmaz Gazi University, Faculty of Prosthodontics, Ankara, Turkey Dentistry Department of

Introduction: Loss of an auricle results from trauma, congenital diseases or surgical ablation of benign or malignant tumors. There are several techniques in auricular prostheses construction. Each patients who lost their auricle wants to get a normal life in the both aesthetic and physichological considerations. They want to use some accessories with their auricular prosthesis. Rehabilitation efforts can only be successful when patients can appear in public without fear of attracting unwanted attention. Result: In our case, the advance sculpturing technique of the auricular prostheses permit the use of glasses, ear rings and ear phones by the final prosthetic rehabilitation.

PP 032 BIOMETRIC RELATIONShIP BETWEEN INCISIVE PAPILLA AND MAXILLARy CENTRAL INCISORS Authors Gloria Staka Department of Prosthodontics, Dentistry School ­ Medical Faculty, Kosovo Introduction: The incisive papilla is a stable landmark that remains unchanged following extraction of maxillary anterior teeth. Aim: The aim of this study was to investigate the biometric distance between the posterior border of incisive papilla and the labial surface of maxillary central incisors. Materials and Methods: The material for the present study consisted of dental casts of the 147 Kosovo - Albanian students. An electronic digital caliper (Boss Hamburg-Germany)with accuracy of 0.01 mm was used for measuring the biometric distance between the posterior border of incisive papilla and the labial surface of maxillary central incisors. Descriptive statistics were used for the data analysis. Results: The mean distance between the posterior border of incisive papilla and the labial surface of maxillary central incisors was 12,16 mm. Conclusion: The application of this biometric relationship can provide a reliable landmark for arranging the anteroposterior position of the maxillary incisors for complete dentures.

PP 031 AN APPLICATION Of ThE PhOTOPOLyMEZING PLASTIC MATERIALS IN ThE IMMEDIATE PROSThETIC TREATMENT Authors Yordanova M.*, Yordanova S.*, Chaprashikyan On.** * Department of Orthodontics, Faculty of Dental Medicine, MUPlovdiv, Bulgaria **Department of Prosthetic Dental Medicine, Faculty of Dental Medicine, MU- Plovdiv, Bulgaria Introduction: Modern photopolymerizing plastic (PP) introduced in the dental medicine by Dentsplay de Trey in 1983 and Triad 2000 in 1990 are most widely applied in the orthodontic practice for the fabrication of treatment and prophylactic appliances and retainers.

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PP 033 CITOTOXICITy Of SILVER-PALLADIUM DENTAL ALLOy AfTER RECASTING Authors Cairovic A., Zivkovic R., Radovic K., Glisic M., Milic A., University of Belgrade, Faculty of Stomatology, Belgrade, Serbia In restaurative dentistny there are numerous indicatives for use of dental alloyus.There is still no alternative for dental alloys in spirit of technological development of many new dental materials. One of the most often used dental alloy is Ag-Pd alloy. The purpose of this study is to evaluateif repeated casting has a cignificant influence to citotoxicity of Ag-Pd alloy. For the in vitro test there were prepared 4 discs (R=5mm,8=1mm) and the procedure of melting and casting was repeated 8 times, nithous adding any new allow.After the eight recasting thediscs were polished. For the in vitro testing a used a standard test (fibrovast L929 poliferation test).

Result: Approximately after 36 months; no implants or natural tooth abutment were lost. There was no fracture, loss or intrusion of natural tooth used for telescopic abutment. Implants showed high stability and excellent periimplant soft tissue conditions. Conclusion: In order to increase retention, stability, chewing ability and easy access for oral hygiene procedures; combination of various retainers can be used.

PP 035 COMPARATIVE STRESS ANALySE BETWEEN UNILATERAL fREE-END SADDLE DENTURE WIThOUT PALATINE CONNECTOR AND CLASSICAL REMOVABLE PARTIAL DENTURE Authors Radovic K., Zivkovic R., Stancic I., Cairovic A., Glisic M., Milic A., University of Belgrade, Faculty of Stomatology, Serbia Different kinds of mobile dentures are used as solutions for patients with unilateral free-end saddle. Unilateral dentures without palatine connector with attachments are very suitable for patients. High aesthetic and comphort are advantages of those advices. Aim: The aim of this research is comparative analyze between unilateral and classical removable partial denture under stress conditions using finite element method. Matherial and method: Computer program CATIA is used for modeling the models of unilateral free-end saddle denture without palatine connector with SERVODENTAL precision attachment (abutment teeth canine and first premolar) and model of classical removable unilateral free-end saddle denture with clasps. Comparative analyze between unilateral and classical removable partial denture under stress conditions is made by finite element method. The loading is calculated under force of:300N in the region of second premolar, 500N in the region of first molar,700N in the region of second molar. Results: Applied, extreme loadings caused high stress of abutment teeth, but still close to phisiological values. Conclusion: Our results are showing good funtional qualites of unilateral free-end saddle denture without palatine connector. This denture could be used as alternative in therapy of unilateral free-end saddle.

Poster Presentaions

PP 034 COMBINATION Of TELESCOPIC COPING AND BALL ATTAChMENT fOR TOOTh-IMPLANT SUPPORTED MANDIBULAR OVERDENTURE: CASE REPORT Authors Ulusoy Mutahhar, D.D.S., Ph.D., Isayev Abulfaz, D.D.S., Cogalan Kemal, D.D.S. Ankara University, Faculty Of Dentistry, Department Of Prosthodontics, Turkey Introduction: An overdenture is secured by precision dental attachments. The attachments are placed in tooth or dental implants which have been placed specifically for the overdenture attachment. Several attachment systems are avaible for overdentures, specially ball, bar, magnet attachments and telescopic copings. Purpose: Replacing the missing teeth with conventional removable partial dentures is the traditional method for the treatment of partial edentulism; however, there are many potential disadvantages associated with traditional RPDs. This article discusses implant-teeth supported overdenture with telescopic coping and ball retained attachments as a predictable and cost-effective treatment for patients with partial edentulism. Materials and method: A 60 year old woman had only right canine in the mandibula and anterior teeth in the maxilla. The patient was using conventional removable partial dentures. As a result she suffered from aesthetic and functional problems. Treatment was as follows: First we inserted 2 implants in the first premolar region in both side of mandibula as a support for an overdenture. A telescopic coping was fabricated on the canine and 2 ball attachments were placed on the mandibular implants for supporting mandibular overdenture.

PP 036 COPy TEChNIQUE AS A TREATMENT MODALITy IN ELDERLy PATIENTS Authors Stancic I., Jelenkovic A,. Tihacek Sojic, Milic A., Djurisic S., Cairovic A. University of Belgrade, Faculty of Stomatology, Serbia

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It is acknowledged that a replacement of complete dentures can result in adaptation problems, which lead to difficulty in learning to use the new appliances. Because of this, a variety of copying techniques have been described that allow the favourable features of existing dentures to be incorporated into the replacement at the same time limiting the modifications only to aspects which cause problems. Copy technique implemented in the Clinic for Prosthetic dentistry, Faculty of Stomatology in Belgrade, is a technique with less number of clinical phases then conventional method. Consequently it is applicable in elderly patient with poor general health condition. Determination of the vertical dimension of occlusion and functional impression are united into singular clinical phase. When dental technician and clinician are well trained to perform this technique, adaptation in elderly patients has a better chance of being shorter and passing without complications.

PP 038 EffECT Of REPEATED fIRINGS ON MEChANICAL PROPERTIES Of ZIRCONIA Authors Behiye Dabakoglu, DDS; Ender Kazazoglu, DDS, PhD Yeditepe University, Faculty of Dentistry, Department of Prosthodontics, Istanbul, Turkey Purpose: During the veneering process of zirconia, the core materials need to be fired at least five times at high tempratures. The aim of this study was to evaluate the effect of repeated firings during veneering process on biaxial flexural strength (BFS) and Vickers microhardness (VM) of zirconia frameworks. Materials and Methods: Three industrially sintered yttriastabilized zirconia ceramic (ZirkonZahn, Steger, Ahrntal, Italy; Cercon, DeguDent, Hanau, Germany; and Ceramill, Amann Girrbach, Koblach, Austria) were prepared in 60 disc shaped samples (1.2mm15mm) (ISO 6872). Each group divided into 6 subgroups with 10 samples and fired respectively as follow; no firing, 1, 3, 5, 7, and 9 repeated firings. Results: ZirkonZahn showed highest BFS and VM results for all firing groups (BFS:1372 Mpa; VM:1720 HV). Highest BFS and VM values were found for Ceramill in unfired group (BFS:999 Mpa; VM:1503 HV). The highest BFS values (1372 Mpa) were recorded in third firing group of ZirkonZahn and the lowest values in fifth firing group (1277 Mpa). In VM test ZirkonZahn showed the highest value in fifth firing group (1720 HV) and the lowest value in ninth firing group (1343 HV). Cercon group showed the highest results for BFL in unfired group (805 Mpa) and lowest results in ninth firing group (686 Mpa). Conversely, VM test results were highest in ninth firing group (1538 HV). Conclusion: It appears that biaxial flexural strength and Vickers microhardness values of zirconia materials were decreased as they repeatedly fired, except for Vickers microhardness values of Cercon system.

PP 037 DIMINIShING ThE MOVEMENT Of AN ORBITAL PROSThESIS COMBINED WITh AN OBTURATOR By MAGNETS: A CASE REPORT Authors Gokce Soganci, Suat Yalug, Mustafa Kocacikli Gazi University, Faculty of Prosthodontics, Ankara, Turkey Dentistry, Department of

Introduction: Radical maxillectomy frequently leads to extended defects in hard and soft tissues that result in a connection between oral and nasal cavities. Retantion of orbital prostheses on which depends only skin adhesives are debating. Retantion is enhanced when auxilary mechanical devices as magnets are used under the circumstances especially lack of implants. Purpose: To assemble the obturator and the orbital prostheses with magnets can lead movements while obturator is in function. Due to fact that designing a mechanism that prevents the movements of the orbital prosthesis while obturator is in function, contributes patient's comfort. In this case our goal was to combine both orbital and obturator prostheses by means of magnets with a mechanism that compansate functional movements. Materials and method: A 45 year-old male patient who has open communication between oral, nasal and orbital cavities came for prosthetic rehabilitation. Silicone of the maxillo facial prosthesis was fabricated on an acrylic resin base, in the usual manner. A closed, hollow obturator partial denture prosthesis was finished. Afterwards, orbital and obturator prostheses were assembled with magnets and a moving mechanism were created between acrylic base of orbital prosthesis and hollow obturator with a wire. Results and Conclusions: To assemble the prostheses not only with magnets but also with a moving mechanism minimizes the movement problems of orbital prosthesis. Key Words: Orbital prosthesis, hollow obturator, magnets, movement

PP 039 ESThETIC PROSThODONTIC REhABILITATION Of PATIENT WITh COMBINED ANTERIOR fIXED AND PARTIAL REMOVABLE DENTAL PROSThESIS ­ A CASE REPORT Authors Tatjana Djuric, Zlata Brkic, Smiljka Dukic Military medical academy Belgrade, Serbia Introduction: Esthetic removable dental prosthesis with a free-end saddle includes using different types of extracoronal attachments. They replace clasps which are unaesthetic and inefficient as retainers in the anterior part of the mouth. Purpose: The following report shows the possibility of making esthetic removable dental prosthesis combined with anterior fixed dental restauration by using relatively simple and not expensive attachement, for this indication.

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Materials and method: Femail patient, age 39, who had tooth 13, 12, 11, 21, 22, 26, 33, 32, 31, 41, 42 and 43, did not want prosthesis with clasps in visible region so we decided to use attachments for retention of partial removable dental prosthesis. The use of attachments requires teeth preparation for metal-ceramic crowns connected into block and made by milling technology and placing prefabricated attachments on abutment teeth. Results: Prosthodontic treatment with combined fixed and removable dental prosthesis provides acceptable results for esthetic and function. Conclusions: In case like this, when we want to make esthetic and functional prosthesis, it is recommended to connect abutment teeth to avoid unfavourable loading of them, to stabilize partial removable dental prosthesis by making guide plane and band on the crowns and to use extracoronal attachments. Benefits of this procedure are obvious: teeth connected into block are much stronger, milling surfaces stabilized prosthesis and using attachments instead of clasps provides better retention and excellent esthetic. We emphasize that it is not always necessary to use an expensive attachements. Instead of that we can use simple and cheap attachments, which are easy to handle and it is possible to repair or replace them in one visit of patient.

Results and Conclusions: The use of stock ocular prosthesis of appropriate contour, size and colour to make the custom ocular prosthesis can provide an acceptable aesthetic result, a low cost, time consuming and avoid of complicated laboratory procedures when the iris is preparing.

PP 041 fATIGUE RESISTANCE Of DENTURE POLyMEThyLMEThACRyLATE REINfORCED WITh DIffERENT TyPES Of E-GLASS fIBERS Authors Ozlem Gurbuz, Idil Dikbas, Fatma Unalan Department of Dentistry, Bakirkoy Research and Training Hospital for Psychiatry, Neurology and Neurosurgery, Istanbul, Turkey This in vitro study was performed to determine the reinforcing effect of different types and concentrations of glass fibers on fatigue resistance of a commercially available, heat-polymerized acrylic denture base material. A total of 91 specimens (84 specimens for test groups and 7 for control group) of a heat-cured acrylic resin (75mm x 10mm x 3 mm) were fabricated. The test specimens were prepared by modifying the polymethyl methacrylate with the addition of different concentrations (2.5%, 3%, 4%, 5%) of three types (chopped strand mat, surface issue and continuous fibers) of E-glass fibers. Control specimens were unreinforced.The fatigue resistance was evaluated using the constant deflection test. The specimens were continuously loaded by three-point bending until failure on a fatigue test machine. Magnitude of deflection was 2 mm and loading frequency 5.7 Hz. The number of loading cycles needed to cause a fracture in the test specimen was considered the fatigue resistance of the specimen. For statistical analysis, Kruskal-Wallis test followed by Dunn\'s multiple comparison test were used. 4% surface issue glass added test group showed the highest fatigue resistance values. When the fatigue resistance values of chopped strand mat, continuous glass fiber and surface issue glass added groups at all concentrations were compared with the control group, the differences were not statistically significant. Fatigue resistance values of surface issue glass fiber added groups at all concentrations were higher than that of chopped strand mat and continuous glass fiber added groups. The differences were statistically significant.

Poster Presentaions

PP 040 fABRICATION Of AN INTERIM OCULAR PROSThESES fOR RECONSTRUCTED EyELIDS AND EyE SOCKETS: A CLINICAL REPORT Authors Gokce Soganci, Mustafa Kocacikli, Hseyin Yazicioglu Gazi University, Faculty of Prosthodontics, Ankara, Turkey Dentistry, Department of

Introduction: Several ocular and orbital disorders require surgical intervention that may result in ocular and surrounding tissue defects. Fundamental objective to fabricate an ocular prostheses is to enable the patient to cope better with the difficult process of rehabilitation after surgery. Purpose: The aim of this study is to fabricate a custom made ocular prostheses using an acrylic stock eye shells of appropriate size and shade after the reconstruction of eye sockets and eyelids. Materials and Method: Impressions were taken from the reconstructed sockets with irreversible hydrocolloid material. Models were obtained from hard dental stone and wax was poured into the models. After try in stage, the acrylic resins were fabricated. The stock ocular prostheses were trimmed to fit the acrylic resin prostheses and the adjustments were done to get the similarity as possible as of the symmetrical eye. Then we fixed the assembles with an otopolymerizing acrylic resin and took the second impression by means of these assembles. The stone casts were obtained and the prostheses were finalized with heat cured acrylic resin.

PP 042 fRACTURE RESISTANCE Of TEETh RESTORED WITh DIffERENT POST SySTEMS Authors Bilgin S, Ozturk A.N Selcuk university faculty of dentistry, Konya Turkey

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The aim of this study was to investigate the fracture strength of different post systems cemented with a resin luting cement. In this study 60 extracted maxillary canine teeth were endodontically prepared and filled. Teeth were randomly assigned to one of four post systems placed into the prepared canals: Group I-Everstick posts ; Group II-Ribbond THM posts; Group III- Snowpost and Group IV- Cosmopost. A dual cured resin cement (Panavia F) was used for bonding the posts into the root canals. Standard cores were made by a core composite resin (MultiCore HB). The samples were tested in the compression test machine for 1 mm/min and fracture resistance of the teeth were recorded. The data was analyzed by using Kruskall Wallis and Mann Whitney U tests. A significance level of p<.05 was used for all comparisons. There was a significant difference in fracture resistance between the post systems (p<0.05). Cosmopost was more resistant to fracture than other groups. (p<0.05). There were no significant differences among the Everstick, Ribbond THM and Snowpost (p >0.05).

PP 044 GEOMETRIC MODELING AND 3D GENERATION Of hUMAN jAW Authors Zivkovic R., Simonovic A., Stancic I., Jelenkovic A., Milic A., Radovic K. University of Belgrade, Faculty of Stomatology and Faculty of mechanical engineering, Serbia Human mandibule model design based on TMS data for purpose of structural analysis of temporomandibular joint is described. Due to complex geometry, model design consists of several steps in different software packages. Model segmentation is used to achieve necessary precision, but to avoid unnecessary gain on model complexity and to eliminate data anomalies. Important (main) characteristic of TM joint is that it is consisted of two symmetrical, functionally connected joints. These two joints with several muscles provide opening and closing of the mouth and other movements necessary for accomplishing main functions of the stomatognathing system. TM joint is the mostly often used joint in the human body. It is controlled by muscle activity, above all masticatory muscles. Even when the mouth is closed, muscles are under tension in order to keep that position. Only when the body is relaxed, these muscles are relaxed too, but in some cases even in that condition, muscles are under tension (for example bruxism). Contemporary researches of loading the structures of TM joint in different positions and movements of mandible are carried out with 3D models of the TM joint. This work present methodology of making 3D models of the TM joint, which represent preparation of the finite element method in analyzing loading of the structures of the TM joint.

Authors Vaggeli Konstantina, Alexiou Theodoros, Koidis Petros Aristotle University of Thessaloniki,School of Denistry, Greece Due to current trends and social-economic conditions worldwide as well as genetic or mutagenic factors, gastroesophageal and eating disorders have been recognized as pathological conditions with variable significance. Besides the general health concerns, oral environment and tissues are directly affected. Especially when prosthetic restoration of such patients is under consideration, identification of variables that will prevent material and structure deterioration is very important for the overall prognosis. In the present work, it is described how 1) Eating Disorder patients (anorexia nervosa and bulimia nervosa), 2) patients with Gastroesophageal Reflux Disease, 3) Asthma, 4) "Special" patients, such as children in all these diseases, including Bartter syndrome and 5) Ambulatory patients (with unhealthy habits and problems such as alcoholism and drug addiction) should be managed. Characteristics of each condition are described and suggestions for the appropriate manipulation, treatment planning and clinical service are presented. The final aim is to present approaches for establishing specific treatment protocols that will benefit the management of these patients and the performance and longevity of the applied fixed prosthetic restorations.

PP 045 GINGIVAL fIBROMATOSIS INDUCED By ChRONIC IRRITATION Of A PONTIC: A CASE REPORT Authors S. Hakan Tuna*, Ozlem Fentoglu**, Isin Kurkcuoglu*, *Suleyman Demirel University, Faculty of Dentistry, Department of Prosthetic Dentistry, Isparta, Turkey **Suleyman Demirel University, Faculty of Dentistry, Department of Periodontology, Isparta, Turkey It is shown that ill-fitting prosthetic restorations and inappropriate designs may induce irritations and varying lesions in the adjacent soft tissues and also cause bone resorption. Gingival fibromatosis is a rarely seen lesion which can occur with chronic mechanical stimulations on the flabby gingival tissues and is characterised by the hypertrophy and/or hyperplasia of the gingival tissues. Case: A 38 year-old male patient applied to the prosthetic clinics with the complaints of painless swelled gingiva in his upper right quadrant and requested the replacement of an old fixed restoration in this area. The history revealed that the existing fixed restoration was placed one week after the extraction of a residual deciduous tooth without allowing the healing process of the extraction socket. Clinical examination showed that patient had a fixed

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PP 043 GASTROESOPhAGEAL AND EATING DISORDERS CONSIDERATIONS AND MANAGEMENT IN fIXED PROSThODONTICS

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cantilever two-unit bridge cemented on the 14. An overgrown tissue was observed adjacent to the pontic on the buccal area of the gingiva. It was appeared as a hard keratinised tissue and was approximately 4 cm in diameter. The lesion was excised and histopathologically assessed. Histological examination revealed that there was a gingival fibromatosis identified by collagene-rich tissue and a reactive fibrous proliferation. After a 6-month followup period, no re-occurrence of the lesion was observed. For further clinical follow-up, the patient will be recalled. Considering the possible mechanical irritations and resulting unwanted iatrogenic damage, restoration design and appropriate treatment planning is of great importance for the protection of the hard and soft tissues in the restoration area.

Private Health Institution "Dr. Vladimir Simeonovski", Skopje, Macedonia In our specialist office, within the period 2006-2009, certain numbers of patients, users of total acrylic dentures were observed, as they were complaining about non-adequate stability and retention of their dentures. After intensive observations, checks and executed functional tests with the dentures into their mouth we found out that at certain patients, the problems were caused by too emphasized plicae and frenulums when there is no possibility for adequate adjustment of dentures into the mouth. We aimed to work out surgically, plicae and frenulums which obstruct the retention and stabilization of dentures. After executed frenulectomy, the results were obviously improved, thus making our aim to be fulfilled. Most of the treated patients were satisfied by the new condition of their dentures, meaning that the problem of stabilization and retention has been solved. On the poster presentation, the procedures and methods of frenulectomy will be shown on one case. Conclusion: After such executed surgical interventions, fast and without complications resulting in improved retention of dentures, we'll intend in future to execute pre-prosthetic surgical treatment.

PP 046 hOW TO AChIEVE RELIABLE REPRODUCTION Of ThE NATURAL TEETh DURING fIXED PROSThODONTIC TREATMENT Authors Bajevska J, Bajevska Ja, Bajevska Stefanoska B. PHC University Dental Clinical Center "St. Pantelejmon" Skopje, Macedonia The aim of this article is to enhance the life-like appearance of the shape and position of the aesthetically compromised, but kept natural teeth, before carrying out the tooth preparation in the process of fixed prosthodontic restoration fabrication. In order to produce various fixed prosthodontic constructions, we used temporary crowns on stone models of the upper and lower jaw based on dental impressions taken previous to the tooth preparation. With the help of the provisional crowns on the stone models, in most of the cases we copied the same shape and position of the teeth, in other occasions we enlarged the length of the crown according to the patient desire, while in other study group we changed both the shape and position of the incisal margin. The stone models from the maxillary and mandibular jaw and the impermanent crowns designed on dental impressions procured from unprepared teeth, can offer significant assistance to the dental technician while obtaining natural figure of the ceramic crown, or a certain transformation following the patient instructions.The described method is rational and acceptable when the teeth that need to be placed under ceramic crowns possess optimal contour and emplacement.Also keeping the same shape (or performing small changes) is important when the teeth are prepared to carry crowns with connecting elements. The results enable avoiding disappointment in the eyes of the patients while fixed prosthodontic restorations are used for aesthetic reconstruction in the frontal region.

Poster Presentaions

PP 048 INjURy Of PERMANENT TEETh WITh IMMATURE APEX AND PROSThETIC REhABILITATION ­ A CASE REPORT Authors B. Knezevic, D. Bozovic-Behara, M. Behara Helth center Cacak, Dental surgery "M. Behara" Cacak, Serbia By 15 years of age 33% of children have experienced at least one episode of dental trauma.The most common injuries of primary teeth are loosening or desplacement and crown and root fractures of permanent teeth. Effect of trauma depends upon stage of development, type of injury, treatment and pulpal sequelae. Resorption is the one of the sequences, commonly seen after avulsion, luxation, intrusion or extrusion. The aim: of this work is to show the prosthetic rehabilitation of the adult pation that had injury of the permanent teeth with immature apex. Methods and material: The patient 23 years old had trauma as a child. Tooth12 was missing, and 11 was broken and restored with composite. Tooth 13 took place of the 14, and 14 was on its place. She had a small removable partial denture, that compensate 12. On intraoral radiographic image we saw a intrernal resorption on 11, and we couldn't devitalized that tooth and made cast pin.

PP 047 INDICATION fOR fRENULECTOMy AT PATIENTS WITh TOTAL PROThESIS Authors A. Traykovski, V. Simeonovski, D. Pagovski, K.Misovska

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The result: We performed tooth reduction on 11 and 14, and made ceramic bridge. Teeth 11 and 14 are abutments and 12 is pontic of the bridge. Patient was rehabilitated and satisfied by new look. The conclusion: Sequences of the trauma may couse many problems. Tooth 11 wasn't long enough to care ceramic crown by itself. We save that tooth only by making a bridge, otherway he would be lost.

Computer design and manufacturing of dental restorations using Cerec system is identical for all three types of scanning and makes it possible to determine the difference in marginal adaptation of ceramic inlays.The aim of this study was to determine the difference in marginal adaptation of ceramic inlays, manufactured by Cerec system using three different techniques of scanning. Material and Methods: For purpose of inlay manufacturing, 15 acrylic first upper molars have been prepared.Using Cerec system and three different types of scanning, 45 ceramic inlays were made on prepared teeth.Control group consisted of 15 inlays made by IPS Empress-2 system.The measurements of marginal adaptation were done with scanning electron microscope(magnification x100). Statistical data analysis showed that marginal adaptation of inlays made by Cerec Scan was statistically significant higher then those made using Cerec intraoral scanner and In Eos scanner. Key words: CAD/CAM, Cerec, marginal adaptation

PP 049 LIMITS IN TREATING BRUXISM Authors Veronica Mercut, Mircea Suciu, Mihaela Popescu, Petre Marasescu, Felicia Ciuca U.M.F. Craiova, Romania The bruxism is a daily and nightly parafunctional activity which includes the gritting (screeching) and the friction of the teeth, bringing about disastrous consequences on teeth, oro-facial muscles and temporo-mandibular articulation. Objective: highlighting most frequent clinic of bruxism and the extent of the treatment. Material and method. This study was realised on a lot with bruxism clinic. Oclusal factors, psycho-socio-behavior factors and psychopathological factors were incriminated for the etiology of bruxism. The treatment method was elected based on the degree of attrition, ranging between the upkeep of the current situation to complex oral rehabilitations. Results and Conclusions. Bruxism is a rather frequent disease, almost 15% prevalence rate, that manifests itself upon every component of the dental-jaw apparatus. There is a painstaking treatment and the evolution depends on the on the pacient\'s dedication for the recommented treatment, the failure of the prosthetic treatment is a risk that should be shared with the pacient.

PP 051 MICROTENSILE BOND STRENGThS Of TWO CERAMIC LAMINATE SySTEMS TO ENAMEL Authors Ozturk AN, Ozturk B, Buyukozer T, Arslan Malkoc M Selcuk university faculty of dentistry, Konya, Turkey The purpose of this study was to evaluate the effect of tooth bleaching on the microtensile bond strengths of 2 different ceramic systems (IPS Empress, Cerec 3) cemented with two resin cement (Variolink 2, Rely X) to enamel. Ninety six maxillary central teeth used in this study were stored in saline at room temperature. Teeth were randomly assigned to 2 groups of 48 each. Flattened enamel surfaces of teeth were bleached with opalesence xtra, nonbleached teeth used as a control group. Standardized bevel preparations were made in all teeth. Each of the 2 groups were further divided into 2 resin cements of 24 each. Teeth were restored IPS Empress system and Cerec 3 system. Ceramic laminate veneers were luted with Rely X or Variolink 2. Specimens were stored in distilled water at 37C for 24 hours. The teeth were sectioned along their long axis into three 1x1 mm wide `I' shape sections. The specimens were then subjected to microtensile testing at a crosshead speed of 1 mm/min Two-way ANOVA and Tukey honestly significant difference (HSD) tests were used to evaluate the results (P<.05). Two-way ANOVA revealed that microtensile bond strength were influenced bleaching application (P=.000), ceramics (P=.000), and cements (P=.000). Control group,Cerec 3 and variolink 2 performed better microtensile bond strength values than bleaching, IPS Empress and Rely X groups.

PP 050 MARGINAL ADAPTATION Of CERAMIC INLAyS MADE By CEREC CAD-CAM TEChNOLOGy Authors Branka Trifkovic, Danimir Jevremovic, Aleksandar Todorovic, Ana Todorovic Clinic for Prosthodontics, School of Dentistry, University of Belgrade, Serbia All CAD/CAM systems have three basic components, from which computer aided inspection (CAI) has the biggest influence on restoration precision.The most famous CAD/CAM system that supports optical methods of scanning is Cerec.This system has three optical scanners (intraoral scanner, In Eos and Cerec Scan), which function on different scientific basis.

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PP 052 MODIfIED INDIVIDUAL MANDIBULAR ADVANCEMENT DEVICE fOR TOTALLy EDENTULOUS PATIENT WITh SEVERE OBSTRUCTIVE SLEEP APNEA Authors Piskin B, Sentut F, Oguz D, Sevketbeyoglu H, Avsever H, Gunduz H, Kose M Gulhane Medical Faculty,Ankara, Turkey Obstructive Sleep Apnea Syndrome (OSAS) is periodic cessation of airflow due to narrowing or obstruction of pharengeal lumen and upper airway during sleep. The prevalence of OSAS differs from 2-8% in population. Excessive daytime sleeplessness, and impairment of alertness, and cardiovascular disease are most common complication of OSAS. Many treatment methods have been presented for OSAS patients recent 30 years. Oral appliances are a promising new approach in the treatment of OSAS. This devices maintain the pattern of the upper airway and prevent the lumen of pharynx from collapsing during sleep. Mandibular Advancement Devices (MAD) are more useful than Tongue Retaining/Repositioning (TRD) Device for OSAS patients. It has been emphasized that the success rate of MAD is higher in moderate cases than in severe ones. The aim of our study was to evaluate the effectiveness of the modified MAD in a totally edentulous patient with severe OSAS.61 year old Caucasian female complete edentulous patient was referred to Van Military Hospital Dental Service because of severe OSAS. The patient who had been performed a complete pyschical dental examination consist of assessing condition of muscles of mastication, and limits of lateral and protrusive movements of mandible, and tenderness of temporomandibular joint. It was obvious that the patient had bulk masseter muscles bilaterally. It had been decided that the patient was suitable for MAD with slightly expansion of masseter muscle towards laterally for wideness buccal corridor to increase upper airway airflow.

State Examination. Results show high normative treatment need and low real treatment need due to unexpectedly poor cognitive status of the frail and dependent. Frail and dependent elderly should be systematically provided with dental and prosthetic care in order to avoid oral and general health complications and negative effects on quality of their life.

PP 054 PhOTODyNAMIC DESTRUCTION Of CANDIDA ALBICANS ON COMPLETE DENTURES WITh PORPhyRINS AND PhThALOCyANINES Authors E. Popova1, S. Dimitrov2, H. Kissov3, A. Vlahova3, I. Angelov4, V. Mantareva4, V. Kussovski4 Department of Periodontology, FDM-Plovdiv, Bulgaria; Department of Conservative Dentistry and Endodontics, FDMSofia, Bulgaria; 3 Department of Prosthodontics, FDM-Plovdiv, Bulgaria; 4 Bulgarian Academy of Science

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Preface: Photodynamic therapy is an experimental method for a treatment of pathogens in the oral cavity. Success depends on the efficiency of the applied photo sensitizer and the proper light parameters. Candida albicans often causes a fungal infection for patients wearing dentures. Purpose: The purpose of this study is to determinate whether Candida albicans, grown as biofilms on acrylic resin dentures, could be eliminated using a photodynamic therapy. Materials and methods: Ten complete acrylic resin dentures, contaminated with fungal cells were used for the investigation. The photodynamic inactivation of C. albicans was done with the help of photosensitizing drugs and an irradiation from a red LED at 635 nm. The experiments were carried out using a commercial product Haematoporphyrin derivative and the newly developed drugs such as phthalocyanine zinc, aluminium, gallium and indium complexes. They were performed in vitro with 10 7 cells per mL. The optimal treatment conditions namely the drug concentrations of 3 mM for porphyrin and between 2-3 µM for phthalocyanines and light parameters of 40 J.cm-2 and a fluence of 50 mW.cm-2 were applied. Results: The preliminary results showed a complete photo inactivation for the treated with porphyrin and Zn (II)phthalocyanine samples. The effect was lower with Ga (III)phthalocyanine (log3). Conclusion: A photodynamic therapy is an alternative method for an elimination of the fungi from the genus of Candida (in particular C. albicans) in the oral cavity. Key words: photodynamic therapy, complete dentures, C. albicans

PP 053 NORMATIVE AND REAL TREATMENT NEED IN fRAIL AND DEPENDENT ELDERLy Authors Jelenkovic A., Stancic I., Zivkovic R., Milic A., Tihacek Sojic LJ., Djurisic S. University of Belgrade, Faculty of Stomatology, Serbia Frail and dependent elderly cannot take care of themselves, living in long term facilities such as nursing homes or hospitals. Their oral health condition is usually very poor, because of previous lack of dental treatment, but also because of ignorance of caregivers about dental hygiene benefit. Normative prosthetic treatment need is present in every patient without adequate dentures. Real treatment need represents possibility of the treatment realization due to patients' general health condition, cognitive status and desire for the treatment. Discrepancy between the normative and real treatment need was investigated in 30 patient residents of Geriatric hospital in Belgrade. Cognitive functions were examined with Mini Mental

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PP 055 PROSThETIC REhABILITATION-A CASE REPORT Authors Nikola Tosic, Andreja Mutavdzic Health Institution of Ministry of Internal Affairs, Belgrade, Serbia Patient is 48-years female. Presented situation was: Maximal partially edentulous arch with only remainded teeth situated peripheraly and anterior to the ridge of left upper jaw (group I Hofmann)-picture On the mandibular ridge,there where presented partial loosening of teets,with shortening dental arches on the booth sides,and anteriorly edentelous arch-picture Our prosthetic rehabilitation plan was to ensure functional and estetic reconstruction of upper and lower dental arches,and,also a parts of soft tissues in the region of lower jaw. Solving this problem,we decided to make upper skeletal partial denture with metal base and supraradicular attachment resilience. Connection of few remainded teets was primary (industrial maded Dolder bar) between the metal-ceramic crowns ­ picture Materials we used: - Vario-Kugel-Snap system (vks-oc uni) with ring retention (Bredent) - Co-Cr-Mo alloy - Thermoplastic acrylic resign - Industrial maded Dolder bar (Bredent) - Vita VMK 95 ­ A2 and G1 collor Basic criterias for this solution where: - mehanical fusion with supraradicular attachment at remainded root in upper jaw - Primary connected few remainded teets with industrial Dolder bar. This fact provides the possibility of equal oclusal biting force,and better stabillity and retain of dentury.

Key words: partial denture, implants, prosthetic rehabilitation.

PP 057 PROSThETIC REhABILITATION GUNShOT DEfECT (CASE REPORT)

Of

MAXILLOfACIAL

Authors Mumcu E, Bilhan H, Avsever H, Gunduz K, Ucok O Gulhane Medical Academy, Ankara, Turkey Gunshot injuries of maxillofacial area represent a challenging problem with regard to restoring optimal oral function. Because of this kind of injuries exhibit a variety of complexity, they are extremely serious situation for the emergency departments. Reconstruction and rehabilitation of acquired maxillofacial defects are highly important, to regain the disadvantages such as loss of function, speech and aesthetics is very difficult. Most of these cases include extensive soft and hard tissue trauma complicated by burns, fractures and foreign bodies. Gunshot wounds have comparatively low rate among the causes of the maxillofacial defects but they present a high difficulty level to surgeons. In this case report we shall present the clinical evaluation and the prosthodontic treatment of 25 years old Caucasian male patient with maxillofacial gunshot defect.

PP 058 PROSThODONTIC REhABILITATION Of A PATIENT WIThOUT INTERARC SPACE IN ANTERIOR REGION Authors Dt. Gamze Alniacik*, Asist. Prof. Abdullah Kalayci**, Prof. Filiz Aykent*, Assoc. Prof. Ercan Durmus *Department of Prosthodonti,Universty of Selcuk, Turkey ** Department of Oral and Maxillofacial surgery, Turkey

PP 056 PROSThETIC REhABILITATION Of COMPLICATED MAXILLAR TRAUMA WITh REMOVABLE DENTURE AND SINGLE OSTEOINTEGRATED IMPLANTS: DESCRIPTION Of CLINICAL CASE Authors V. Hadjigaev* D. Atanasov** Y. Hadjigaev* *Department of prosthetic dentistry, **Department of oral surgery, Faculty of Dentistry, Medical University ­ Plovdiv, Bulgaria The authors are presenting the medical treatment of a 20 year old girl, who has lost her maxillar alveolar crest with the teeth in an automobile accident. Because of the grave problems with the occlusal relationships and difficulties with the prosthetic treatment that took place, after consideration, a decision has been made to use a single osteointegrated implants and a removable denture. The stages and results of the treatment are presented in detail.

Introduction: Although an anterior segmental osteotomy of the mandibular was the first orthognathic procedure described in the literature. Maxillary and mandibular anterior segmental osteotomies are ways to correct disharmony in the lip (contour, lip seal, and profile) and occasional dentoalveolar malocclusion. Purpose: To provide an esthetic smile and function. Clinical Report: A 33 year-old male was referred to our faculty for prosthetic rehabilitation of his edentulous maxillary anterior and mandibular posterior region. Clinical examination showed that he missed his teeth because of trauma in childhood and interarc space decreased in anterior region. Before the prosthodontic rehabilitation, subapical mandibular anterior osteotomy was performed to provide space between mandibular incisor region and maxillary edentulous ridge. After surgical treatment all ceramic fixed partial dentures reinforced with zirconia were fabricated.

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Result and Conclusion: The patient recalled after a week to examining his oral hygiene. At the last follow-up of the patient, function was well, and no signs of complication associated with new crowns and soft tissue were observed.

PP 059 PROSThODONTICS OR ORThODONTICS­ThE MATTER Of ChOICE Authors Aleksandar Lopicic, Aleksandra Radulovic, Marija Antunovic Clinical Center of Montenegro, Podgorica, Montenegro Introduction: We should always give a priority to non-invasive techniques when making esthetic teeth reconstruction or occlusal reconstruction. There are many varieties of noninvasive techniques from orthodontics to conservative, but in some cases, invasive techniques are the matter of choice. This article presents benefits of prosthodontic invasive technique in reconstruction of frontal and lateral incisors comparing to noninvasive orthodontic treatment.

Rampant caries is a special form of caries which is frequently manifested by milk teeth (dentes deciduis). By permanent dentition it is also manifested, bat very rare. The aim of this paper is to show a rare case of rampant caries by permanent dentition, and its prosthetic treatment Rampant caries was diagnosticated by a male patient of adult age. The patient, after clinically examination and panoramic X-ray was submitted to the endodontic teeth treatment. The prosthetic treatment began with metal molding post cores for teeth without a partial or total crowns. After completion of teeth with metal molding post cores, the procedure continued by prosthetic treatment with metal ceramic crowns and bridges. Rampant caries by teeth of permanent dentition is a rare phenomenon. The prosthetic disciplines with their functional abilities of construction and reconstruction, often entirely fulfils the treatment of oral rehabilitation, or in the therapeutic process operated independently. Fixed prosthetic, in a high per-cent is applied for the definitive solution of oral rehabilitation of cases. Key words: Rampant caries, permanent dentition, prosthetic treatment.

Poster Presentaions

Case report: Thirty year old male patient came with rotated and dislocated central and lateral left incisors. He was a public person and had spent a lot of time in media. He wanted to change his outlook. We suggested him a non invasive orthodontic treatment that would last for a 1-2 years. Conservative noninvasive technique wouldn't reach maximum esthetic effect because of characteristic rotation and situation of both incisors. The patient demanded that solution of his problem should have been quick, long lasting, maximum esthetic and no one should notice that something was going on with his teeth during the procedure. Two whole ceramic crowns (Empress Ivoclar Vivadent) were the solution. However, that was an invasive technique that needed a specific grinding modification and devitalisation of both teeth in order to reach maximal esthetic and function. During the procedure, after grinding the two temporary crowns (3M) were put to patient and everything was done in four days. Two whole ceramic crowns were cemented using dual curing Variolink II luting cement (Ivoclar, Vivadent). Conclusion: Although non invasive techniques are priority in occlusal reconstruction, in this case, prosthodontic and endodontic, both invasive techniques, were the matter of choice in order to satisfy the specific patient's demands and reach maximum esthetic and function.

PP 061 RAyNAUD'S PhENOMENON AND MASTICATORy MUSCLES DISORDER: 2 CASE REPORTS. Authors Isin Kurkcuoglu*, S. Hakan Tuna*, H. Onder Gumus** *Suleyman Demirel University, Faculty of Dentistry, Department of Prosthetic Dentistry, Isparta, Turkey **Erciyes University, Faculty of Dentistry, Department of Prosthetic Dentistry, Kayseri, Turkey Raynaud's phenomenon (RP) can be defined as a vascular disorder characterized by a recurrent transient vasospasm of the fingers and toes on exposure to cold or with emotional stress. This disease causes extreme vasoconstriction of the peripheral blood vessels, leading to tissue hypoxia. The condition causes painful, cold extremities. Chronic, recurrent cases of RP may affect the skin and the muscles. The phenomenon is more common in women than men. Case I: A 56 year-old female patient applied to the prosthodontics department with the complaint of pain in her masticatory muscles. The history revealed that she was previously diagnosed with the RP. Clinical examination of the muscles and TMJ by palpation showed masseter hypertrophy. The patient exhibited tenderness to palpation in the masseter and tomporal regions. She stated that the pain increased when exposed to cold. She also described that the pain was as strong to wake her up at nights. Intraoral examination revealed the signs of bruxism. Case II: A 20 year-old female patient applied to the prosthodontics department with similar complaints. She

PP 060 RAMPANT (CIRCULLAR) CARIES AND ITS PROSThETICALLy TREATMENT - A CASE REPORT Authors Sherif Shaqiri Department for Prosthetic Dentistry, School of Dentistry, Faculty of Medical Sciences,State University of Tetova, Macedonia

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presented tenderness in her masticatory muscles and the clinical signs of bruxism. No TMD was detected radiographically and clinically for both patients. To prevent the parafunctional activities and to reduce muscle hyperactivity, maxillary stabilization appliances were prepared for the patients. Thermotheraphy was also advised to create vasodilatation in the compromised muscles to reduce the symptoms. The management of RP is still however empirical and further study is necessary to detect the relation between RP and masticatory muscles disorder.

After a month without any complaint we applied dentin pins to increase teeth heights lost because of abrasion. Then we prepared teeth for porcelain veneer crowns. Afterwards partial removable denture was performed. Results and Conclusions: Prosthetic rehabilitation of the occlusal vertical dimension achieves the acceptable occlusion and esthetics.

PP 062 RESTORATIVE MANAGEMENT Of WORN DENTITION Authors Temel Koksal, Idil Dikbas Yeditepe University, Faculty of Dentistry, Istanbul, Turkey Management of patients with toothwear requires thorough understanding of the causes and their prevention. Before beginning the treatment procedures for patients with worn dentition, the types of toothwear and aetiological factors should be considered. Toothwear can be classified into 4 groups: Attrition, abrasion, erosion and abfraction. In addition, for practical reasons, the worn dentition may be classified according to location: Localized anterior, localized posterior and generalized toothwear. The preventive measures and the management of localized anterior, posterior and generalized toothwear have been discussed by means of some cases.

PP 064 ShEAR BOND STRENGTh AND MICROLEAKAGE ChARACTERISTICS Of CERAMIC REPAIRING SySTEMS: A COMPARISON Of LOWW AND ULTRA-LOW fUSING CERAMICS Authors Nesrin Anil, Canan Hekimoglu, Atilla Ertan Hacettepe University Faculty of Dentistry Department of Prosthodontics, Ankara, Turkey Purpose: To evaluate the microleakage and the shear bond strength between two low fusing and two ultra-low fusing porcelain material and two repairing materials. Material and Methods: One hundred and sixty pporcelain specimens were prepared in disc form using each porcelain material.The discs were assigned randomly in two groups to be repaired with one of the two repairing material. Ten specimens from each group were used for microleakage evaluations and the other for shear bond strength evaluation. Authoradiografic method was used for determination of microleakage at the interface of porcelain and repairing material and was evaluated by using a cuistom scale. Shear bond strngths were determined using a universal testing machine. Results: Eigthyeigth specimens showed no evidence of isotop penetration (no microleakage)and 66 specimens showed slight isotope penetration up to one fourth of the interface between porcelain and repairing material. Highest shear bond strength was observed in Ceramco II material whwn repaired with Cimara(18.4 MPa). Lowest shear bond strength was observed in Titan keramic material when repaired with Silistor (9.1 MPa). Low fusing porcelains were fractured with significantly higher forces (16.0(MPa) than ultra-low fusing porcelains(11.7 MPa) (p=0.014). Conclusions: Microleakage characteristics were not significant by different combinatios of all the materials tested. Shear bond strength was affected by porcelain types (ultra-low fusing) and by one of the repairing material (Cimara). Ceramco II material showed the strongest and Titankeramic material showed the weakest bond strength.

PP 063 RESTORING ThE OCCLUSAL VERTICAL DIMENSION By fIXED AND REMOVABLE PARTIAL DENTURES: A CASE REPORT Authors Gokce Soganci, Berna Turgut, Cihan Akcaboy Gazi University, Faculty of Dentistry, Department of Prosthodontics and Topraklik Oral Health Centre, The Ministry of Health of Turkey, Ankara, Turkey Introduction: Clinicians are often faced with the challenge of restoring severely worn dentition. This is challenging when a lack of restorative space exists. A critical aspect for successful treatment of these patients is to determine the occlusal vertical dimension. Occlusal rehabilitation is inevitable when there is a need for increasing the occlusal vertical dimension. Purpose: We aimed to increase the occlusal vertical dimension due to abrasion. Restoring the occlusion improves the function and enhances the facial esthetics. Materials and Method: A female patient was applied to our department with complaining of her worn teeth and esthetic A splint was applied for a month in terms of complaints as pain.

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PP 065 SINGLE TOOTh REPLACEMENT USING A MODIfIED RESINBONDED fIXED PARTIAL DENTURE: A CLINICAL REPORT Authors Ulusoy Mutahhar, D.D.S., Ph.D., Cogalan Kemal, D.D.S., Isayev Abulfaz, D.D.S. Ankara University, School of Dentistry Department Of Prosthodontics, Turkey Introduction: The introduction of adhesive resin restorations preceded and permitted the resin-bonded fixed partial denture(RBFPD) to become a viable alternative to conventional complete-coverage fixed partial dentures(FPDs), particularly in certain areas of tooth loss. One such region is that of the mandibular anterior teeth, where esthetics is of great importance. The implant-supported crown is not advisable when the available bone volume is minimal, or when the adjacent root is in close proximity. Metal-ceramic RBFPDs have shown good long-term serviceability. Purpose: This clinical report describes a treatment for a missing mandibular central incisor using the modified resin-bonded fixed partial denture(MRBFPD) with improved retention by posts in endodontically treated abutment teeth. Materials and Method: The clinical and radiographic examinations of a 40- year-old woman revealed the loss of left mandibular central incisors. The abutment teeth with healthy periodontium were endodontically treated. After conventional preparation of tooth canal cavity and impression procedures, custom cast metal post connected to cast metal lingual retainers of RBFPD were fabricated. The MRBFPD was luted with a white adhesive dual-polymerizing resin. Result: Upon completion of the MRBFPD, routine maintenance was performed during patient recalls for a period of 3 years. The patient was satisfied and reported no functional or esthetic problems. Conclusion: Resin-bonded fixed partial dentures(RBFPDs) initially recorded had poor survival rates because of indefinite tooth preparations and poor retention of composite resin cements. By using this method in this case we had more retentive area with post connected to RBFPD.

The development of all-ceramic systems has offered many improvements including enhanced mechanical and esthetical properties. However fracture of the veneering porcelain and/ or ceramic coping is the most commonly reported major complication requiring remaking of these restorations. Recently a new alumina all-ceramic material has been introduced and this article describes addition of a new pontic to the constructed maxillary 4-unit framework fabricated from this system after intraoral verification of core porcelain framework.

PP 067 RELATIONS Of COLOR IN INCISORS, CANINES AND PREMOLARS Authors Teuta Pustina-Krasniqi, Agim Islami, Kujtim Shala University Dental Clinical Center Of Kosova, Prishtina, Kosova The aim of the study was to analyze differences of the colors in different teeth group, jaw and side; by visual perception and spectrophotometer Vita Easyshade. There were examined 82 subjects. The teeth color was matched on the middle third of 1640 teeth (incisive, canines and premolars). Based on two methods the higher percentage of accordance between visual perception and spectrophotometer was in central incisors ~ 40.85%, whereas the most frequent shade by visual perception was 2M2 and by spectrophotometer 2M3. It was concluded that higher percentage of accordance between two methods was in frontal teeth and the spectrophotometer showed higher degree of Chroma on teeth group, jaw and side.

Poster Presentaions

PP 068 ThE EffECT Of SURfACE WETTABILITy AND AGING WITh ThERMAL CyCLING ON ADhERENCE Of CANDIDA ALBICANS TO RESILIENT DENTURE LINERS Authors Ozcan Canturk*, Bora Bagis**, Ayse Kalkanci***, Cavidan Akoren****, Yasemin Keskin****, Nesrin Hasirci*, Semra Kustimur***, Ufuk Hasanreisoglu**** *Department of Chemistry, Faculty of Arts and Sciences, Middle East Technical University, Ankara, Turkey **Department of Prosthodontics, Faculty of Dentistry, Ankara University, Ankara, Turkey Purpose: The aims of the present study were (1) to investigate the correlation between surface hydrophobicity (wettability) and C. albicans adherence for resilient denture liners (2) to evaluate the effect of saliva and aging with thermal cycling on hydrophobic properties of the surface and C.albicans adherence. Materials and Methods: Three silicon-based resilient denture liner materials (Molloplast B, Flexor and Ufigel P) were tested in this study. The total surface energy and the polar and non-polar

PP 066 SOLUTION Of AN ESThETICAL PROBLEM Of A MAXILLARy ANTERIOR fIXED PARTIAL DENTURE fABRICATED fROM A NEW ALL-CERAMIC MATERIAL AfTER INTRAORAL VERIfICATION By ADDING NEW PONTIC Authors Bulent Uludag *, Volkan Sahin ** * Professor, Department of Prosthodontics, Ankara University, Faculty of Dentistry, Turkey ** Assistant Professor, Department of Prosthodontics, Kirikkale University, Faculty of Dentistry, Turkey

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contributions to the total surface energy were estimated from contact angle measurements as a representative of wettability, using sessile drop technique with 5 different solutions. Adhered candidial cells were examined microscopically. The results were evaluated statistically using one-way ANOVA and Scheffe's multiple comparison tests. Results: Total surface free energy of Molloplast B increased considerably with saliva and saliva + thermal cycling while this was only recorded in saliva coated group for Ufigel P. Total surface free energy of Flexor was consistent in all the groups. As to the untreated specimens, polar contributions were larger in saliva coated groups either thermally cycled or not for Molloplast B and Ufigel P groups. No significant differences were detected in the amount of candida adhesion when parameters within each material group were compared with the exception of Ufigel P coated with saliva. Besides, comparisons between each material group revealed larger amount of microbial adhesion only for untreated Molloplast B group (p<0.05). Conclusion: Saliva contamination and aging with thermal cycling changed the total surface free energy of some of the soft denture liners tested and seemed to modulate candidal adherence to the material surface to some extent.

"GR.T.POPA" University of Medicine and Pharmacy, Iasi, Romania Introduction: In the recent years, dentistry has benefited from a market increase in the development of aesthetic materials, including ceramic and composite compounds. Purpose: The aim of this study was to notice the influence of the aesthetic component of the veneered bridges upon the bacteria developed into the oral cavity after the application of the prosthetic rehabilitation. Material and method: We used three different composite as veneering elements: Solidex, Gradia and Ceramage. The bridges were fixed since two years ago. The average age for the studied patients was 30 years. The patients were regularly checkedup every 6 month in order to assess oral hygiene, device adaptation to oral conditions, biomechanical, aesthetic and functional integration of the prosthetic appliance. We collected samples from the bridges and from the corresponding natural teeth from the opposite arch, respecting the same surfaces. To determine the number of bacteria the method of plate cultivation was used. The method uses the colony developed after inseminating agar areas in Petri plates, with dilutions obtained from the analyzed samples. Results: The greatest number of lactobacilli was registered on the Solidex surface and the lowest has been observed for the Gradia plating material. Conclusions: The choice of material to restore morphology and appearance of the dental arch is an important health care decision. While plaque accumulation is a prerequisite for the development of gingivitis, it is absolutely necessary to survey the evolution of composite materials used in fixed prosthetic rehabilitation. Key words: oral accumulation. bacteria, fixed prosthesis, plaque

PP 069 ThE EffECT Of ThE DISTANCE BETWEEN ThE POST RESTORATION AND ThE REMAINING ROOT CANAL fILLING ON ThE PERIRADICULAR STATUS IN A TURKISh SUBPOPULATION Authors Zeynep Ozkurt, Mehmet Baybora Kayahan, Ender Kazazoglu, Gunduz Bayirli Yeditepe University, Faculty of Dentistry, Istanbul, Turkey The aim of this study was to evaluate the effect of the distance between the post restoration and the root canal filling on the periapical health. Panoramic radiographs of 1633 randomly selected patients were evaluated by two observers. The total number of endodontically treated teeth with posts was 407. Quality of root filling, gap occurance between the root canal filing and the post restorations were evaluated. Apical status was assessed by the Periapical Index scores and Chi-Square test was used for statistical analysis.The results stated that the teeth with adequate root canal fillings had significantly more periapical pathosis if there was a distance between the post restoration and the root canal filling (p<0.001). It can be concluded that the distance between the post restoration and the remaining root canal filling was a significant contributing factor on the periapical health.

PP 071 ThE ORAL BRIDGES WITh EXTENSIONS Authors Veronica Mercut, Mircea Suciu, Mihaela Popescu, Petre Marasescu, Felicia Ciuca U.M.F. Craiova, Romania The oral bridges with extensions are the most common prosthetic structures, the body of the bridge being attached to only one extremity of aggregation elements. Objective: The presentation of clinical situations that indicate a prosthetic treatment with bridges with extensions and the evolution of cases that benefited from this treatment. Material and method: The study was realised on 50 pacients wich presented bridges with extensions and they came to Dental Prosthhodontical Clinic of Dental Collenge of Craiova

PP 070 ThE INfLUENCE Of VENEERING MATERIALS ON ThE ADhERENCE Of ThE ORAL BACTERIA Authors Monica Tatarciuc, Anca Vitalariu

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in view of renewal the treatment or for other treatments. At the prothesed patients, we aimed for: recovering the functions of dental maxillary apparatus, including recovering of ocluzal function and the evolution of sustainability capacity of pylons. Results: The results emphasized good evolution for bridges with extensions, functional values of pylons were good, compensated occlusion and the balance between pylons and the body of bridges was greater than one. Conclusions: Bridges with extensions could be a good therapeutic solution for some specified clinical cases. Key words: Bridges with extensions, body of bridge, pylons.

A 63-year-old male patient who had no muscle tenderness or facial asymmetry had referred to the clinic for prosthetic rehabilitation. Medical and dental histories were recorded and the radiographs were taken. In intraoral examination the maxillary arc was fully dentate and there was generalized severely worn dentition throughout. The patient had, approximately, 9 mm of VDO in clinically. Tooth preparations for metal ceramic crowns were completed on both maxillary and mandibular tooth. After the adjustment of definitive crowns they were cemented with ZnP cement. The patient was given instructions to seek 6- month prosthodontic and periodontal recall appointments. Restoration of worn teeth will be needed in only some patients and the measures with which need for treatment is assessed is one of the keys to successful outcomes.

PP 072 ThE POSSIBILITy Of AESThETIC SOLUTION Of SUBTOTAL ANODONTIA USING PARTIAL fLAT DENTURE RETENTION Authors Dr. Bratislav Velkov Medical Centre "Aleksinac", Nis, Serbia The purpose of this paper is to report on one of the possibilities of aesthetical solution of subtotal anodontia by means of a partial flat denture. Rehabilitation was carried out on a patient with selected subtotal anodontia sample by a combined fixed-mobile partial flat denture. Used as elements fot the flat partial denture were attachments (interdental crossbars). Applied in the methodology of work were known clinical principles while the attachments building-in technique was done in keeping with the manufacturer's instructions. The results obtained point to the possibility of resolving the subtotal anodontia by means of the partial flat denture without using hooks as standard retention elements. The dentures made in the way are impressive due to their aesthetic values and are very stable. PP 074 USE Of PRECISON ATTAChMENT TO ENhANCE ThE RETENTION Of MAXILLOfACIAL PROSThETIC OBTURATOR: A CASE REPORT Authors Sema Murat, Ayhan Gurbuz Ankara University, Faculty of Medicine, Department of Prosthodontics, Ankara, Turkey The majority of maxillary defects can be ideally reconstructed with a convensionel simple obturator but inadequate retention, stability, and support are the main problems associated with the use of prosthesis. Precision attachments have been used to retain obturators for some time.The use of several attachments is described as providing increased stability and retention of the prosthesis, as well as improved obturator water and airtightness. The esthetic enhancement and functional rigidity provided by attachments are favorable features to many challenging clinical situations such as class II or III defect (Aramany's maxillectomy classification). The use of attachments as an adjunct to maxillary obturators is indicated for (1) improved aesthetics and (2) improved retention in comparison to conventional clasping on incisors as terminal abutment adjacent to a large defect. A 65-year-old male patient was referred to Department of Prosthodontics at Ankara University, Faculty of Dentistry by his head and neck surgeon for evaluation for prosthetic treatment in February 2007. He had been diagnosed with epidermoid carcinoma of the maxillary sinus for which a unilateral maxillectomy was done followed by post-surgical radiation therapy 5 years earlier. On clinical examination, a large maxillofacial defect extending from right premaxilla to the posterior alveolar crest and orbital base was observed. This clinical report describes the prosthetic rehabilitation of a maxillary defect with an obturator retained by extracoronal resilient attachments.

Poster Presentaions

PP 073 TREATMENT Of A PATIENT WITh SEVERELy WORN DENTITION Authors Mumcu E, Bilhan H, Ayyildiz S, Avsever H Gulhane Military Medical Academy, Ankara, Turkey Among older individuals, lifestyle changes and chronic diseases that are controlled with medications that may, in turn, result in regurgitation and/or dry mouth, are possible reasons amongst others for the widespread clinical impression of an increasing prevalence of tooth wear. The aim of this study is to treat a patient with severely worn dentition but does not deny any symptoms of TMD problems and myofacial pain as a result of vertical dimension of occlusion (VDO).

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PP 075 USE Of SPECTROPhOTOMETRIC ANALySIS IN ShADE DETERMINATION Of ALL-CERAMIC CROWNS Authors Mirkovic N, Draganjac M, Jovicic B. Military Medical Academy - VMA ­ Belgrade, Serbia Despite the developments in the field of dental materials, the technique of shade determination has hardly changed over the past 30 years. The patient's expectations regarding the colour of the esthetic restauration must be carefully evaulated as well. Colour-related issues will be immediately percived both by the patient and by his or her social enviroment. A possible solution for most of the problems of dental shade matching would be to create an objective basis for the shade-related findings. A more appropriate method would be to use contemporary colorimetrics and instrumentation systems, which have been the state of the art for quite some time. The high potential of computerized dental shade matching is obvious in the dental office in near future. Technological progress will continue, and the number of computerized systems will grow continuously. The aim of this article was to present "SpectroShade" system of measuring colour of tooth restorations. Key words: Tooth shade, Spectrophotometry, Ceramic crowns

In this technique, colored acrylic denture teeth reduced bucco-lingually for available space on patient's dental model. Retention grooves were prepared and glass reinforced fiber (everstick, Stick Tech Ltd., Finland) was adjusted on the prepared pontics groove and extended to at least 2/3 mesiodistal length of adjacent teeth. Flowable composite was used to make bond between fiber and acrylic pontics. Prior to bridge cementation with resin cement, % 37 phosphoric acid gel and adhesive resins applied according to the manufacturer's instructions.

PP 077 GUIDED IMPLANTOLOGy, IMMEDIATE LOADING AND TECNOPOLyMERS: ThE NEW fRONTIERS IN PARTIAL AND TOTAL EDENTULISM REhABILITATION Authors Bruno Fornengo Italia In the last 25 years many advances there are been in the field of implanto-prosthesis. The obtained successes in osseointegration and the daily use of CT scan to plan edentulism rehabilitation have made possible not only to visualize anatomical structures, but even to simulate surgical procedures to insert fixtures. The advances in the stereo-lithography and CAD-CAM technology have made possible to make surgical guides and anatomical models. The surgical guides, or "semi-active systems", have two aims: first, they are used by the technician to make a provisional restoration without dental impressions obtained from the patient; and second they are used to precisely transfer on the patient the planning made before with the software, so the surgeon has a large margin of safety during fixtures insertion. Immediately at the end of a shortened and simplified surgery is so possible to screw on the fixtures a fixed custom-made provisional restoration, making possible for the patient to come back to his daily life with a comfort impossible to obtain with traditional systems. In the field of the prosthetic restoration too there are been many advances, and today is possible to substitute metal frameworks with tecnopolymers frameworks that improve the esthetical results and make more simple the technical procedures.

PP 076 A CONSERVATVE TREATMENT fOR MSSNG ANTEROR TEETh: fBER RENfORCED BRDGES Authors Kivanc Utku Ulusoy*, Erdal Eroglub** * Research Assistant, Department of Prosthodontics, Faculty of Dentistry, Süleyman Demirel University, Isparta, Turkey ** Assistant Professor, Department of Prosthodontics, Faculty of Dentistry, Süleyman Demirel University, Isparta, Turkey An eighteen years old female patient with congenital bilateral missing mandibular lateral incisors referred to our clinic after orthodontic treatment. A fiber reinforced bridge was found applicable for the choice of restoration type. Fiber reinforced resin-bonded bridge offers a conservative, esthetic, and metalfree tooth replacement. Other advantages include reduction of cost compared to conventional bridges, saving of time, elimination of second visit, ease of application, absence of metal allergy, ease of cleaning, and naturalness of feel. This study presents a technique for fabricating directly applied resin-bonded fiber reinforced bridges. The technique provides a simple method for creating a better pontic­ridge relation and improved overall esthetics. If sufficient space is available for pontics, this technique can achieve more promising results. Additionally, by choosing the appropriate colored acrylic denture teeth, poor esthetic results can be avoided. Elimination of the polishing and finishing procedures for the prefabricated pontics are also adds of this procedure.

PP 078 OROfACIAL INjURIES AND ThE USE Of MOUThGUARDS IN DIffERENT CONTACT SPORTS IN GREECE. Authors D. Tortopidis*, C. Fylatos**, E Toulia**, P. Koidis*** *Assistant Professor **Undergraduate student ***Professor and Head, Department of Fixed Prosthesis and Implant Prosthodontics, School of Dentistry, Aristotle University of Thessaloniki

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The objective of the present study was to measure the occurrence of orofacial injuries in different sports, and to survey the athletes' awareness concerning the use of mouthguards during sport activities. The sample consisted of 155 professional and semi-professional athletes [87 male (56%) and 68 female (44%)] aged between 14 and 40 years participating in wrestling, water-polo, karate, aikido, handball and tennis. The frequency of orofacial trauma during matches and training was recorded and the reason for using or not using mouthguards was assessed. A great difference in orofacial injuries was found when comparing the different kinds of sports. The statistical evaluation with z-test and chi-square test revealed that the difference between orofacial trauma experience on patients with (10.8% injured) and without (38.1% injured) mouthguard use was statistically significant (P=0.002). Mouthguards where worn regularly during matches and training by 16% of the athletes. A smaller percentage wore mouthguards only in matches (8%). Most injuries were found in wrestling (40%), whereas there were none (0%) inflicted injures stated by tennis players not wearing mouthguards. Of the total sample of 155 subjects, 52 (34%) were well informed about mouthguard usage. Of the total sample 37 (24%) of the subjects used mouthguards, of which 15 (41%) were boil-and-bite type. Dentists and sport authorities in Greece need to recommend the use of mouthguards in contact and other sports, which have a serious risk for orofacial injuries.

PP 080 A CASE Of ALOPECIA AREATA, ASSOCIATED WITh A fOCUS Of DENTAL ORIGIN Authors Balcheva M., Abadzhiev M. Institution: MU-Varna, FDM, Bulgaria We report a case of a 4,5 year-old boy who came to us five months after a trauma. He had no pain, but only a swelling in 51, 61 region. Three months later the mother noticed an empty spot in his hair. They visited a dermatologist ­ the diagnosis was Alopecia areata and the recommendation ­ to see the dentist and cure the teeth. The purpose is to show the connection between the dental focus and the main illness and to suggest a possible way to manage this problem with a fixed retainer. Methods and materials: Clinical examination (revealed an unsuccessful root canal treatment of 61, followed by periodontitis); radio(also showed a picture of periodontitis); allergic background(reaction to Paracetamol with urticarial rash is declared); examination by specialist, confirming healthy tonsils. The tooth was extracted and a retainer with acrylic tooth was fixed to the adjacent teeth. This retainer will be replaced every six months, in order not to stop the growth of the bone. Results: Two months after the manipulations the empty spots in the hair are almost disappeared. The intraoral status is perfect.

Poster Presentaions

PP 079 SEMI AUTOMATIC TOOL fOR 3D CT/MR SEGMENTATION Of fACIAL TISSUE LAyERS Authors Ozlem Ucok, Ilkay Ulusoy, Erdem Akagunduz, Erol Akin, Fatih Ors Gulhane Military Medical Academy Department of Oral Diagnosis and Radiology, Ankara, Turkey In complex tissue regions such as face, automated segmentation of tissue into classes of skin, fat, muscle or bone is impossible. Segmentation by manual labeling of the pixels or the voxels is also impossible besides the fact that each hand labeling results in a different classification which is not repeatable. There are some libraries which provide semi automatic tissue segmentation but they could not be used for facial tissues. In this study, a semi automatic tool is developed for facial tissue layer segmentation where the performances of both the segmentation and the user interface are taken into account. The method can be used for both 3D MR and CT data. Each tissue surface can be extracted by moving a planar grid from the outer side of the head towards the tissue and by fitting this grid over the surface of the tissue. This is done by setting some parameters on the user interface but the movement of the grid is automatic. If the result of this surface fitting is not satisfactory, more user intervention is involved such that each point on the grid can be moved manually to the required position again via the user interface.

Conclusion: Focal infection is wide-spread problem and this technique is an easy way to manage it and its consequences.

PP 081 SOURCES Of STUDENTS

STRESS

AMONG

DENTAL

MEDICINE

Authors Manolova M., Stefanova V., Panaiotov I., Markova Kr., Guilhem Romieu Faculty of Dental Medicine, Medical University Plovdiv, Bulgaria; Faculty of Dentistry, University of Montpellier 1, France The term stress describes external demands (physical or mental) on an individual's physical and psychological wellbeing. Some stress is desirable to prevent boredom and understimulation, but the persistence of stress-related symptoms may result in mental and/or physical ill health, substance abuse, and diminished efficiency at work or learning. The dental profession is considered one of the most stressful health professions. In addition intense interaction between the dentist and patient could precipitate a state of "burnout" that consists of emotional exhaustion, depersonalization, and reduced personal accomplishment. The origins of this stress

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may also lie in the process of dental education. In recent years, the injurious effects of stress experienced by dental students have received much attention. Stress has been shown to manifest as fatigue, tension, dizziness, sleeplessness, tachycardia, gastrointestinal symptoms, irritability, anxiety, and cynicism. In addition to this, a negative association has been reported between stress and academic performance of dental students. The aims of this study are to identify the perceived sources of stress among dental students, to investigate whether specific stressors are related to year of study and gender; to compare the findings between Bulgarian and French dental medicine students. Material and Methods: A modified American dental environmental stress questionnaire is used. Students are asked to grade the potential stressors on a scale 0 (not stressful) to 5 (extremely stressful). Results show a high level of stress among fifth year students related to the intense clinical education, the preparation of the future exams and the following graduation. Conclusions: The dental medicine education is a source of specific stress among students.

PP 084 ThE EVALUATION Of PERIAPICAL STATUS AND QUALITy Of ENDODONTIC TREATMENT IN A GROUP Of DENTAL PATIENTS Authors Ilkay Peker, Meryem Toraman Alkurt Gazi University, Faculty of Dentistry, Department of Oral Diagnosis and Radiology, Ankara, Turkey Introduction: As patients' expectations and cost of endodontic treatment rise to perform good quality root canal treatment gets more important. Purpose: The purpose of this study was to evaluate periapical status and quality of root canal treatment in a group of dental patients. Materials and Methods: Digital panoramic radiographs of 248 patients who applied to Gazi University, Faculty of Dentistry, Department of Oral Diagnosis and Radiology were examined. Teeth were classified according to the type of restorations. Periapical status was evaluated by the Periapical Index scores proposed by Orstavik et al. Quality of root canal treatment was evaluated according to the criteria proposed by De Moor et al. Results: Totally 5969 teeth were examined and 574 teeth (10 %) had root fillings. The average of root canal fillings observed on each patient was 2.3. A total of 330 (57.5 %) teeth had root canal fillings that showed healthy periapex. Of the 574 root filled teeth, 381 (66.4 %) were determined as good endodontic treatment. Statistically significant correlation was found between healthy periapex and good quality root canal treatment. The teeth with posts had statistically significant high periapical pathosis than teeth without posts. Conclusions: According to the results of this study, the healthy periapex correlated with good quality root canal treatment. The type of restoration can also be an important factor in the treatment outcome.

PP 082 ORAL hEALTh BELGRADE

ATTITUDES

AMONG

PREGNANAT

IN

Authors Irena Dzeletovic Milosevic, Katarina Vojvodic, Institute of Public Health Belgrade, Serbia Introduction: Oral health is important during pregnancy. In Belgrade, Serbian capital with over 1.574.000 inhabitants there is 11,4% pregnant of all women in fertility period. In Institute of Public Health- Belgrade we conduct Telephone Counseling Hello baby for pregnant', and babies' health issues. Aim: Purpose of this paper is to show pregnant attitudes toward oral health. Methods and material: It is social medicine study based on (SpSS) analysis of 240 phone interviewed pregnantusers Hello baby Counseling in 2007 year in Belgrade. Interview consists of 4 questions linked oral health Results: Mean pregnant age=29,16. Mean pregnancy month=5,96, 45,8% of pregnant reported dental check up, 28,8% reported Oral health problems, 14,65 % pregnant were under dentist's therapy and 23,8% were using fluorides. Conclusion: The pregnant has low awareness of importance of oral health to total health and their baby health. Increasing awareness of importance of oral health is one of the most important part of healthy smiles of Serbian population.

PP 085 TONGUE ABSCESS: A CASE REPORT Authors M. Eray Kolsuz, Hazem Melad, Erdal Erdem Ankara ­ University, Faculty of Dentistry, Turkey Abscess of the tongue is rare infection occuring in the oral and maxillofacial region. Because of airway obstruction and disseminated infection to other regions it sometimes be a life-threatening clinical condition. In this case report a tongue abscess located anterior part of the tongue diagnosed and treated clinically by means of needle aspiration of pus collection has been reported, Also differential diagnosis and clinical management of this entity has been discussed.

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PP 086 fLORID CEMENTO-OSSEOUS DySPLASIA: A CASE REPORT Authors Gunduz K, Avsever H, Karacayli U, Senel B, Piskin B Gulhane Medical Academy, Ankara, Turkey

PP 089 UNUSUAL PRESENTATIONS Of TALON CUSP: A REPORT Of ThREE RARE CASES Authors Gunduz K., Avsever H., Senel B., Karacayli U., Ozen T. Gulhane Medical Academy, Ankara, Turkey

Florid cemento-osseous dysplasia has been described as a condition that characteristically affects the jaws of middleaged black women. It usually exhibits as multiple radiopaque cemetum-like masses distributed throughout the jaws. Radiographically, FCOD appears as dense, lobulated masses, often symmetrically located in various regions of the jaws. Computed tomography (CT), because of its ability to give axial, sagittal, and frontal views, is useful in the evaluation of these lesions. In this case report we shall a patient who was diagnosed with florid cemento-osseous dysplasia on the basis of clinical and radiographic findings.

A talon cusp is a supernumerary structure projecting from the dento-enamel junction to a variable distance towards the incisal edge of an anterior tooth, usually observed on the palatal surfaces of maxillary incisors. This paper discusses three uncommon presentations of the talon cusp: the first occuring on a supernumerary deciduous tooth in the maxilla, the second on the facial aspect of a supernumerary tooth in the maxilla, and the third on a mandibular canine.

PP 087 NON-SyNDROME MULTIPLE SUPERNUMERARy TEETh: A CASE REPORT Of 11 SUPERNUMERARy TEETh Authors Gunduz K, Avsever H, Karacayli U, Piskin B Gulhane Medical Academy, Ankara, Turkey Supernumerary teeth are described as the teeth formed in excess of the number found in a normal dentition. It is a common dental developmental alteration but multiple supernumerary teeth without any associated conditions or syndromes are not common. It is often found in association with syndromes such as cleidocranial dysplasia, Gardners syndrome, or cleft lip and palate. In this report, we shall present clinical and radiologic characteristics of nonsyndromic multiple supernumeraries.

PP 090 hEPATITIS B AND INfECTION CONTROL IN DENTAL CLINIC STUDENTS ATTITUDE, KNOWLEDGE AND BEhAVIOR Authors Nihat Akbulut, Gulumser Colok, Bengi Oztas, Sebnem Kursun Ankara University, Faculty of Dentistry, Turkey Dental students working in close contact with blood and secretion of many patients are in high risk group for parenteral transmission of infectious disease.Nowadays infections formed by virus of hepatitis are the most important part of infectious disease in dentistry.Especially hepatitis B is such a serious disease that threatens major parth of community health. The aim of this studies to determine the level of knowledge, attitude and practice among dental clinic students regarding hepatitis B disease and standard isolation precautions in Ankara University Faculty of Dentistry. This study is a cross-sectional survey which was conducted on clinic students (4th and 5th year) from Ankara University Faculty of Dentistry. A self-administered questionnaire containing three parts (knowledge, attitude and practice) was distributed to the participants. After validation of the survey data was collected and analyzed.

Poster Presentaions

PP 088 NON-SyNDROME MULTIPLE SUPERNUMERARy TEETh IN MANDIBLE: A CASE REPORT Authors Avsever H., Gunduz K., Karacayli U., Piskin B. Gulhane Medical Academy, Ankara, Turkey Multiple supernumerary teeth are a rare dental anomaly which has become a chance finding on routine dental panoramic radiographs. It is often found in association with syndromes such as cleidocranial dysplasia and Gardners syndrome. There are only a few examples of nonsyndromal multiple supernumerary teeth have been reported in the literature. This case report presents the precence of nonsyndromal multiple supernumerary teeth in both sides of the mandible premolar area with no familial history.

PP 091 DENTAL IDENTIfICATION IN MASS DISASTERS Authors Lazaridis Georgios, Lanara Rodopi, Stavrianos Christos, Stavrianou Eirini Aristotle University Of Thessaloniki, Greece It is an undeniable fact that forensic dentistry plays a major role in body identification. Therefore properly trained dental personnel is frequently called upon to help in the identification of mass disaster victims, which is one of the most challenging

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aspects of forensic dentistry. The forensic dentistry investigation teams participate in 3 phases: the autopsy of the place where the incident happened, the estimation of the number of the victims the collection of antemortem material and, finally, the procedure of the autopsy/necrotomy. This process is timeconsuming but it has high rates of success (in mass disasters, 70% of victims are recognized by dental evidence) There are two main forms of identification: 1) comparative identification and b) postmortem profiling. Dental tissues are extremely resistant to environmental assaults such as incineration, mutilation, immersion, trauma and decomposition and they therefore represent an excellent source of DNA. The aim of this presentation is to reveal the significance of forensic dentistry in the identification of mass disasters victims and to describe the methods used in such situations.

There can be different types of elder abuse.Physical abuse, sexual abuse, inactive abuse, active abuse, self-neglect or abandonment, financial exploitation, psychological abuse.Signs and symptoms can be noticed by neighbours and be reported. It is of a major importance that the dentist/doctor is qualified and informed of the protocol on handling cases of elder abuse.

PP 094 INTIMATE PARTNER VIOLENCE.BOTh A SOCIAL AND MEDICAL PhENOMENON. Authors Stavrianos C., Zouloumis L., Stavrianou D., Stavrianou I. Department Of Endodology, Department Of Oral And Maxillofacial Surgery, Faculty Of Dentistry, Aristotle University Of Thessaloniki, Greece Intimate partner violence (IPV) is abuse that occurs between two people who are involved in a close relationship. Many times emotional abuse is the first sign, followed by the others, because as it is well known from psychology, abusive behaviour often leads to physical or sexual assaults.Several types of the IVP can occur stimultaneously.Unfortunately, as a result, the IVP causes a lot of health problems to the victim.The no longer abuse goes on, the more serious it affects the victim.

PP 092 DENTAL NEGLECT Authors Lanara Rodopi, Lazaridis Georgios, Stavrianou Eirini, Stavrianos Christos Aristotle University Of Thessaloniki, Greece Dental neglect, as defined by the American Academy of Pediatric Dentistry, is the \"willful failure of parent or guardian to seek and follow through with treatment necessary to ensure a level of oral health essential for adequate function and freedom from pain and infection.\" Dental and periodontal diseases as well as other oral conditions, if left untreated, can lead to undesirable outcomes, which can adversely affect learning, communication, nutrition, and other activities necessary for normal growth and development. Failure to seek or obtain proper dental care may result from factors such as family isolation, lack of finances, parental ignorance, or lack of perceived value of oral health. Caregivers with adequate knowledge and willful failure to seek care should be considered negligent. However, health care professionals should be very careful and critical when differentiating caregivers without knowledge or awareness of their child\'s need for dental care from caregivers who are just negligent. Cases of child neglect should be reported to child protective services.

PP 095 ThE ROLE Of NUTRITION IN ChILD NEGLECT Authors Stavrianos Christos*, Stavrianou Despina**, Stavrianou Irene*** *Assoc. Professor. Department of Endodontolog(Forensic Dentistry), School of Dentistry, Aristotle University, Thessaloniki, Greece **Nutritionist. ***Dentist. Aristotle University Of Thessaloniki Malnutrition is a phenomenon, registered originally in the developing countries and it is accepted as an act of nutritional neglect. Still, in the 21st century, nutritional neglect that leads to malnutrition occurs, even, in families with loving parents or in medical facilities by caring medical staff. Obesity of adults is another phenomenon of our century and, is associated with nutritional neglect during childhood. Cases of severe child obesity, emphasize the need to understand when a case of obesity in a child, is a real medical/dental neglect and when it becomes a child protection issue. Pediatricians, dentists, general doctors and nutritionists, should be aware that nutritional neglect may lead to childhood malnutrition or obesity and furthermore to death, if left untreated. Medical scientists from all over the world, have the moral obligation to detect and report not only extreme cases of

PP 093 ELDER ABUSE AND ITS fORMS Of EXPRESSION. Authors Stavrianos C., Zouloumis L., Stavrianou D., Stavrianou I. Department Of Endodology, Department Of Oral And Maxillofacial Surgery, Faculty Of Dentistry,Aristotle University Of Thessaloniki, Greece One of the characteristics of the 21st century is the increase of elder population, as a result of demographic, financial and health alterations that have occured in our society.

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physical child abuse, but also cases of nutritional child neglect. Child malnutrition of the third world is a well-known situation in the medical community. The purpose of this report is to review some aspects of nutritional neglect in children that are often put aside, such as: child nutritional neglect from loving parents and caring medical staff, obese adults who have been nutritionally neglected in their childhood, children that becomes obese due to nutritional neglect from their parents, when severe childhood obesity becomes medical neglect and a child protection issue, alcoholic parents and if their addiction affects the nutrition of their children and social aspects of children's deaths due to nutritional negligence.

exhausted, depersonalisation,reduction of work pleasure and work capacity.Stomatology today is very stressifull job, and burnout syndrome is very close to stomatologists. Aim: Find the level of burnout syndrome for stomatologists who work in private or social practice and compare the results. Material and methodes: This study included 64 stomatologists, who work in private or social practice.Burnout syndrome is exeminated with questionnare (Copenhagen Burnout inventory, NIOH, Copenhagen, Denmark 2005). It is contain three groups of questions: for personal, work related and patient related burnout syndrome. Results: Personal burnout syndrome for all exeminated stomatologists is approximate value.They have stress sometimes to often.Work related burnout syndrome for stomatologists in private practice is 55,36 and in social practice 53,12 points on scale.It is hight level of stress.Patient related burnout is highter for stomatologists in social practice 64,97 and in private practice 47,66 points. Conclusions: Results show us that stomatology and work with patients is very stressifull.We have to decreased level of burnout syndrome,or we will have stomatologists with physicall and emotionally bad condition and dissatisfied patients.

PP 096 fORENSIC DENTISTRy AND BIOTERRORISM Authors Lanara Rodopi, Lazaridis Georgios, Stavrianos Christos, Stavrianou Eirini Aristotle University Of Thessaloniki, Greece

Poster Presentaions

The anthrax attacks in the United States have transformed a theoretical threat to stark reality. Dentistry, as an inextricable part of the research community, considered its potential role in responding to a significant bioterrorism attack during the first part of 2002 and reached a consensus on its role. It is an undeniable fact that, in cases of bioterrorism, dentists may be called on to fulfill several functions: education, risk communication, diagnosis, surveillance and notification, treatment, distribution of medications, decontamination, sample collection and forensic dentistry. Preparedness is the key to an instant and organized reaction. Local dental societies should, therefore, develop a plan for the dental response to potential bioterrorist attacks. Educational programs for dentists should be developed to prepare them for providing services, in case they may be recruited to perform in an emergency. The purpose of this presentation is to underline the value of Forensic Dentistry in responding to a major bioterrorist attack and to describe its ways of assistance in the preparation for, defense against and response to bioterrorism.

PP 098 STRATEGIES fOR SUCCES - yOU AND yOOUR TEAM Authors Mladen Behara, Dusica Bozovic Behara, Biljana Knezevic, Sasa Spasojevic Private Practice Cacak, Cecak, Serbia Everyone wishes to be successful but working out what is and how you achieve it can be difficult.Modern dentistry needs a team of people to deliver oral health to the patient.We need to develop both personal strategies and team strategies to enyoja successful,professional career. Leaders lead people - and good leaders share their vision, listen to their teams,let go of control and lead by example. In this poster we present,what follows our initial thougts. a. Good manager,good leader = a teamthat feel inspired and fulfileled their personal lives, b. Good manager,poor leader = a team that feel dominated by an impersonal boss who wants the business to run like a machine but dosn t care about people, c. Good leader,poor manager = a team that love the adrenalin in short doses but recognise that man cannot live by adrenalin alone - and eventually they tire and die d. Poor leader,poor manager = stressed out people looking for nother job. Do you recognise yourself in any of those quadrants? In this poster we present what we have to do and what we have done.

PP 097 LEVEL Of BURNOUT SyNDROME fOR STOMATOLOGISTS IN PRIVATE OR SOCIAL PRACTICE Authors Dr Z. Vukic, Dr Lj. Dzambas, Dr M. Arapovic Savic, Dr A. Z. Andjelkovic, Dr M. S. Jeremic Knezevic Universitet Banja Luka, Medical Faculty, Department of Stomatology, Banja Luka, Bosnia and Herzegovina Intraduction: Burnout syndrome is a type of stress which surrounding us in everyday life,especially work.Characteristics of this syndrome is: feel tired, physicall and emotionally

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PP 099 DIffICULTIES IN ThE CyTOLOGICAL DETECTION Of EARLy ORAL CANCER Authors Divani Smaroula, Exarhou Maria, Papamanthos Matheos, Skoulakis Haralambos, Tsirevelou Paraskevi Volos General Hospital, Volos, Greece Introduction: Oral cancer is one of the most frequent malignancy. It is highly curable when detected at an early dysplastic stage, but unfortunately most cancers are advanced by the time when they are discovered, so the mortality is relatively high. Purpose: The aim of our study was to analyse the difficulties in the cytological detection of early oral cancer. Materials and method: Cytological smears obtained from various lesions of the oral mucosa were evaluated. The material collected by a cytobrush device from 26 patients was placed onto a glass slide for conventional cytology and the residual was prepared using the liquid based technique. Biopsies were performed under local anaesthesia. Diagnoses were based on the WHO criteria. Results: There were 19 inflammatory lesions (mainly candidiasis), three cases with mild dysplasia, two cases with severe dysplasia / possible carcinoma and two carcinomas. Biopsies from severe dysplastic and malignant cases showed squamous cell carcinoma. Conclusion: Early cancers are asymptomatic, so that an early clinical diagnosis may be difficult. Cytologic method is well accepted by the patient and attractive option for the early diagnosis of oral cancer. However there are factors that contribute to a false negative dignosis: 1. Selected site (toluidine blue staining can help) 2. Necrosis, blood or crusting. 3. Malignant features of squamous cell carcinoma can be subtle resembling dysplasia. 4. The graet majority are well differentiated carcinomas showing slight nuclear abnormalities or anucleated hyperkeratinized cells. 5. Full thickness sampling is essential. Careful cytologic study is useful for routine application and clinical follow up.

Key-words: epidermolysis bullosa dystrophica, oral vesiclebullous lesions, microstomy, multiple carious lesions.

PP 101 CROhN'S DISEASE - DENTAL MANAGEMENT Authors Dedic A., Suljak-Loncarevic A., Redzepagic S., Redzic A. Faculty of Dentistry, University of Sarajevo, Bosnia and Herzegovina Crohn's disease affects any part of gastrointestinal tract. Transmural inflammation, thickening of colonic wall, linear ulceration, and submucosal thickening, leading to a cobblestone appearance, can occur. Histological examination shows signs of transmural inflammation and granuloma. Fissures and fistulae are commonly present. Crohn's disease is a complex polygenic disorder. An important task of the immune defence in the intestine is carried out through IgA, which differs in a number of its functions from IgG which is primarily found in blood. During an active chronic inflammation of the intestine, ratio of IgA towards IgG changes in favour of the latter. Whilst IgA keeps damaging antigens away from the colonic wall and prevents their penetration into the body, IgG does not have this characteristic, however by binding antigens with the colonic wall, it can attribute to the inflammation and destruction. Pathogenic mechanism is explained by activation of immune cells by the causing agents which lead to the release of cytokines

PP 100 CLINICAL fINDINGS Of DySTROPhIC EPIDERMOLySIS BULLOSA: A CASE REPORT Authors Cristina Popa, Carmen Stelea, Mihaela Maftei, Eugenia Popescu Department of Oral and Maxillo-Facial Surgery, Chair of Oral Medicine, University of Medicine and Pharmacy "Gr. T. Popa", Iasi,16 Universitatii St., Romania

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Epidermolysis Bullosa is a rare genetic disorder with oral, dental and skin manifestations. This condition with autosomal recessive transmission has 3 categories, among which epidermolysis bullosa dystrophica (EBD). The main purpose of this paper is the analysis of clinical manifestations at oral and skin level in the case of an 11 yearold patient, diagnosed at birth with EBD based on clinical and histopathological criteria. The general clinical examination showed multiple vesicle-bullous, ulcerative and cicatricial lesions on the head, body and limbs. Furthermore, pseudosyndactilia was observed on both arms. The local intraoral clinical examination revealed microstomy, the presence of blisters on lips and oral mucosa, multiple carious odontal lesions affecting both temporary and permanent dentition, generalized gingival inflammation. The patient presented poor oral hygiene mainly because of the lesions that made impossible any dental brushing. Following clinical exam and paraclinical tests it was determined the therapy scheme, including treatments under general anesthesia in several series (it was considered the age of the patient and the presence of microstomy). Following the treatment it was conducted a thorough dispensarization of the child in close co-operation with the parents and consequently the state of oral health grew better. The analysis conducted in our facility led us to the conclusion that the dentist and the dental-alveolar surgeon can perform routine dental treatments in patients diagnosed with EBD and thus helping to maintain oral health. During such operation it should be avoided excessive manipulation and trauma of the tissue that can cause iatrogenic bullous lesions.

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and the inflammation mediators. HLA-DR1 and DQW5 refer to the genetic determinant of this disease. Dilemmas: Are oral lesions expressions of IBC? Do the findings coincide with IBC? Are oral lesions a result of a medical treatment of the disease... We will present a complete dental management of patients suffering from Crohn's disease. Having had Periodontal and Oral therapy completed, all patients have had prosthetic works done at the Department for Dental Prosthetics at Faculty of Dentistry in Sarajevo. Treatment of oral pathology in such patients requires an interdisciplinary team approach.

PP 103 PEMPhIGUS VULGARIS - OUR EXPERIENCE AND fINDINGS Authors Kantardzic A., Dedic A., Hadzic S., Pasic E. Faculty of Dentistry, University of Sarajevo, Bosnia and Herzegovina Introduction: Pemphigus vulgaris is an auto-immune bullae dermatosis. Characteristic antibodies are directed towards desmosome complex of spinosous layer of epithelial cells. Acantholysis (Tzanck\'s cells) is a pathognomonic symptom of pemphigus. Numerous ulcerations on oral lining result from ruptured bullae and vesicles. The efflorescence is present in other oral diseases, so they pose a dilemma and challenge for the final diagnosis of this autoimmune disorder. There is an increase in number of patients affected by pemphigus with the oral topographic localisation at the Department for Oral Medicine and Periodontics at the Faculty of Dentistry in Sarajevo. Case study: We will present cases of pemhigus with topographic oral localisation. These were female patients of various immunologic status, in different stages of the disease, with multiform signs of efflorescence on different oral linings. The average age of patients was 60. At the time of their admission to the Department for Oral Medicine at the Faculty of Dentistry in Sarajevo, no efflorescence of bullae or vesicle type were noticed on the patients\' skin. Bullae filled with serous exudate, eroded ulcerations and erosions, as well as haemoragic crusts were dominant presentations of the disorder in the clinical findings. Pathological-topographic localisation affected the lining of the palate, tongue, buccal lining, lining of the lips and vermillion. Conclusion: An increased number of patients with pemphigus with primarily oral localisation is a clinical imperative for dentists, and specialist practitioners in particular, to perform a detailed diagnostic procedure, with an interdisciplinary therapeutic approach.

PP 102 ORAL LEUCOPLAKIA ­ A CLINICAL CONCEPT AND ThERAPEUTIC PROCEDURES

Poster Presentaions

Authors Dedic A., Foco F., Hadzic S., Hodzic M. Faculty of Dentistry, University of Sarajevo, Bosnia and Herzegovina Introduction: Leucoplakia is a clinical diagnosis, synonym for idiopathic leucokeratosis. Leucoplakia is a focal (solitary) thickening of oral mucosa epithelium. Since the clinical appearance only is not a good indicator of the nature and precancerous potential of an oral lesion, therefore a clinical leucoplakia does not indicate any specific histologic lesion or a certain precancerous potential, but it represents only non-specific white lesions. The most leucoplakias are asymptomatic. Most frequently leucoplakia occur on: buccal mucosa, gingiva and vermilion of the lower lip. Clinical evaluation of a leucoplakia is further complicated by the fact that the appearance of the lesion changes with time. Malignant transformation cannot be accurately predicted on the basis of clinical characteristics. Therefore a histological analysis is required. We will present our findings on leucoplakia, which has been classified upon the size of lesions, correlating to the classification of leucoplakias based on the gradation of lesions system (Sabin LH, Wittekind Ch, editors 1997). After the diagnostic procedure performed at the Department for Oral Medicine, the patient was referred to the Department for Maxillofacial Surgery. Bioptic material has been evaluated by method of histopathological analysis. Conclusion: Histopathological test is an imperative for making a diagnosis of white lesions. In the diagnostic procedure, an interdisciplinary participation of specialists from the areas of oral medicine, maxillofacial surgery and pathology is deemed essential.

PP 104 SIALOADENITIS-A PRACTICIONER

ChALLENGE

fOR

A

MEDICAL

Authors Hodzic M., Dedic A., Pasic E., Hadzimuratovic V. Faculty of Dentistry, University of Sarajevo, Bosnia and Herzegovina Introduction: Large and small salivary glands are distributed throughout the mouth cavity to produce saliva. Saliva is a particularly complex mixture of water, organic matter and inorganic matter. Calcified masses, which cause obstructions in the salivary ducts, can be found in many organs. Sublingual salivary gland duct is the most common site of calculus formation. Salivary calculi are always unilateral, round or oval, have smooth or irregular surface, and are yellowish in

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colour. They occur most frequently in adults. Clinical signs are: pain, tension, swelling of the affected gland, particularly during eating, followed by trismus. We will present an asymptomatic clinical picture, medical history data, accompanied by an ultrasound and X-ray of the calculus in our female patient. The patient (62), presented at the Department for Oral Medicine at Faculty of Dentistry in Sarajevo. On visual examination, we noticed an oedema in the area of exiting sublingual gland duct. On palpation of the sublingual gland, no extraoral submental oedema was found. The patient did not mention any symptoms of either trismus or any significant pain. Since no calculus was found on X-ray, the patient was referred to the Department for Maxillofacial Surgery. A symptomatic therapy was applied. In order to make a differential diagnosis, the patient was referred to have an ultrasound examination. Conclusion: Our recommendation is that any inflammatory changes of salivary glands has to be confirmed by ultrasound and X-ray examinations. Diagnostic and therapeutic protocol is interdisciplinary and consists of oral medicine specialists, maxillofacial surgeons and radiologists.

PP 106 ThE ODONTOGENIC PAThOLOGIES Of DENTAL fOLLICLE IN PATIENTS WITh MULTIPLE IMPACTED TEETh IN ThE MANDIBLE Authors Gonca Duygu DDS*, Fatih Cabbar DDS*, Nurhan Guler Assoc. Prof. *, Nil Comunoglu Assoc. Prof. ** *Yeditepe University Faculty of Dentistry Department of Oral and Maxillofacial Surgery Istanbul, TURKEY **Yeditepe University Faculty of Medicine Department of Pathology Istanbul, TURKEY The presence of dental follicle (DF) adjacent to impacted teeth and the differences in the proliferation rates of oral epithelial cells occasionally lead to the development of cysts and tumors. The incidence of odontogenic cysts and tumor originated from this tissue are reported between 0,001% and 13,3%. There are numerious studies reported that the most common cysts originated from DFs of impacted teeth are dentigerous cyst (DC), odontogenic ceratocyst (OCC) and calcified OCC. The development of different odontogenic pathologies from DFs of multiple impacted teeth are rarely seen in the same patient. In this poster presentation we will present and discuss the treatment modalities of a 53 years old female had a DK, OCC and odontogenic myxoma originated from DF of bilateral impacted lower third molars and lower canine tooth.

PP 105 BILATERAL GLANDULAR ODONTOGENIC CyST Of ANTERIOR MAXILLA: A CASE REPORT Authors Gonca Duygu* DDS, Nurhan Guler* Assoc. Prof. Sedat Cologlu** Prof. * Yeditepe University Faculty of Dentistry Department of Oral and Maxillofacial Surgery ** Yeditepe University Faculty of Medicine Department of Pathology, Istanbul, Turkey The glandular odontogenic cyst (GOC) is a recently recognized rare developmental odontogenic cyst showing an aggressive behavior and accounts for 0.012 to 1.3% of all jaw cysts. This cyst is possibly derived from rests of dental lamina and comprises both secretory elements and stratified squamous epithelium. GOC has a wide clinicopathologic spectrum and the provisional diagnosis based on clinical and radiological examinations may vary. Radiologically it has been reported as dentigerous cyst and there are only three reported cases of simultaneous occurrence of GOC with ameloblastoma. GOC can be misdiagnosed because of the overlap of its histological features with other odontogenic cysts, such as botryoid or lateral periodontal cysts or central low-grade mucoepidermoid carcinoma. The bilateral involvement of this cyst is not common and no reported cases in English literature. In this poster presentation, the clinical, radiographic, and histopathologic findings of the bilateral GOC in the anterior maxilla of a 33 female patient will be presented. PP 107 ORAL hEALTh BELGRADE Authors Irena Dzeletovic Mutavdzic ATTITUDES AMONG PREGNANT IN

Milosevic,

Katarina Vojvodic,

Andreja

Instiute of Public Health Belgrade, Serbia Introduction: Oral health is important during pregnancy. In Belgrade, Serbian capital with over 1.574.000 inhabitants there is 11,4% pregnant women. In Institute of Public Health- Belgrade we conduct Telephone Counseling Hello baby for pregnant', and babies' health issues. Aim: Purpose of this paper is to show pregnant attitudes toward oral health. Methods and material: It is social medicine study based on (SpSS) analysis of 240 phone interviewed pregnant users Hello baby Counseling in 2007 year in Belgrade. Interview consists of 4 questions linked oral health. Results: Mean pregnant age=29,16. Mean pregnancy month=5,96; 45,8% of pregnant reported dental check up,28,8% reported Oral health problems;14,65 % pregnant were under dentist's therapy and 23,8% were using fluorides. Conclusion: The pregnant has low awareness of importance of oral health to total health and their babies\' health. Increasing awareness of importance of oral health is one of the most important part of healthy smiles of Serbian population.

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PP 108 COMPLEX ODONTOMA AND UNERRUPTED TOOTh IN ASSOCIATION WITh MANDIBILER CANAL Authors Yavuz Yuksel, Hazem Melad, Mehmet Eray Kolsuz, Erdal Erdem Ankara University, Faculty Of Dentistry, Turkey Complex odontomas are usually asemptomatic but they can cause impaction or delayed eruption of teeth, retention of primary teeth, pain (if odontoma erupts), expansion of cortical bone or repelling teeth distant areas such as mandibular canal,border or ramus. In this case report, 18 years old male with a complex odontoma in mandible caused third molar tooth impaction with perforation its root by inferior alveolar nevre. Surgical removal of mass and tooth were done under general anesthesia. One month after operation no paresthesia or anesthesia of right lower lip was reported.

PP 110 fOREIGN BODIES IN MAXILLARy SINUS Authors Sebahat Gorgun, Sibel Ozenci University of Ankara Faculty of Dentistry Dept.of Oral Diagnosis and Radiology, Ankara, Turkey The foreign bodies which of the dental originated ones are most commonly seen in maxillary sinus.Usually, the foreign bodies develop as a result of uncontrolled practice of dental filling or root canal filling materials, broken roots, needles, dental burs may be a bit of broken scissors, we can give lots of examples like them. A 32-year-old women patient, applied to our clinic in january 2009.This patient was done root canal filling 6 months ago.Than because of other caries the patient was directed to our faculty by another dentist who the patient went to earlier. In the radiologic examination, it was found out that at the root of right maxillary first molar tooth there was over filling material compatible with density of canal filling material.

PP 109 DETECTION Of VERTICAL ROOT fRACTURE: EffECT Of DIffERENT fILTERS Authors Kivanc Kamburoglu, Sema Murat Faculty of dentistry, Ankara, Turkey Objective: To determine the effects of digital image enhancement on observer ability to detect experimentallyinduced vertical root fractures (VRF). Methods: 64 extracted single-rooted human mandibular premolar teeth were used in this study. In 32 teeth, VRFs were created in the bucco-lingual planes by gently tapping with screwtype root-canal pins. The remaining 32 intact teeth served as a control group. Digital images were obtained using a CCD sensor. Three observers separately examined the original and 4 types of digitally enhanced images (enhanced using sharpness, zoom, reverse-contrast, and pseudo-3D functions) at 1-week intervals. All teeth were evaluated using a 5-point scale for the presence/ absence of VRF. Evaluations of each image set were repeated 1 month after the initial viewings. Kappa coefficients were calculated to investigate the degree of intra- and inter-observer agreement. The areas under the ROC curves (As values) were calculated using the MedCalc statistical software. ROC values for each image type, observer and viewing were compared using t-tests. A level of α=0.05 was considered significant. Results: Kappa coefficients for intra-observer agreement ranged from 0.171 to 0.679. Inter-observer agreement Kappa values ranged from 0.009 to 0.399 for the first reading and from 0.106 to 0.380 for the second reading. Statistical comparisons between As values for each observer showed no significant differences among image types (p>0,05). Conclusion: There were no differences in diagnostic outcomes among observers or among differently enhanced images in the in vitro detection of VRF. PP 111 ODONTOGENIC MyXOMA: CASE REPORTS Authors Bengi Oztas, M. Hakan Kurt, Yavuz Yuksel Ankara Universty, Faculty of Dentistry Oral Diagnosis and Radiology Department, Ankara, Turkey Odontogenic myxoma is a mesenchymal lesion that mimics microscopically the dental pulp or follicular connective tissue. The age range in which this leison appears extended from 10 to 50 years, with a mean of about 30 years. Odontogenic myxomas are benign neoplasms of the jaws, accounting for only 3-6% odontogenic myxomas. They are manifesting with painless swelling and locally invasive. Smaller lesions are asymptomatic. But larger lesions causes some problems such as pain, paresthesia, asymmetry etc. They occure more often in the mandible, especially in the molar region. When they occure in maxilla they often attack the maxillary sinus. They are mostly detected during rutine radiographic examination. Radiographically, this lesion is always lucent, altough the pattern may be quite variable. It may appear as a well-circumscribed or a diffuse lesion. It is often multilocular and often has a honeycomb pattern. Cortical expansion or perforation and root displacement or resorption may be seen. Surgical excision is the treatment of choise. Curettage may result in incomplete removal of the neoplasm. The absence of encapsulation may also contribute to recurrence if the lesion is treated too conservatively. Four patients attempted to Ankara University the Faculty of Dentistry O.D.R. department with different complains. Clinical findings, radiologic examinations and postoperative radiographic images will be discussed in our poster session.

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PP 112 ORAL VERRUCOUS CARCINOMA: A CASE REPORT Authors Sebnem Kursun, Bengi Oztas Ankara University, Faculty of Dentistry Oral Diagnosis and Radiology Department, Ankara, Turkey Oral verrucous carcinoma (OVC) is a slow-growing, nonmetastasizing, rare variant form of squamous cell carcinoma (SCC) that most frequently affects the oral mucosa, although other sites such as the larynx, esophagus, nasal fossae, skin and genitals may also be involved.It was first described by Ackermann which is now also known as `'Verrucous carcinoma of Ackermann'' or `'Ackermann's Tumor''. The oral cavity is the most common site of occurence.This tumor is predominantly seen in males over the sixth decade, most commonly in the mandibular vestibule, buccal mucosa and hard palate. The cause is unknown however studies have shown strong associations with tobacco use in the form of chewing, alcohol and opportunist viral activity associated with human papilloma virus (HPV). A 69 year old male patient was admitted to Ankara Univerity Faculty of Dentistry Oral Diagnosis and Radiology Department in February 2009 for evaluation of an exophytic lesion in the left side labial and lingual aspects of the mandibuler alveolus. Patient's history revealed that he had diabetus mellitus.Further the patient had smoked daily one box of cigarette during a 20 years period.On panoramic examination sclerotic bone changes were observed on the left retromolar region.MRI findings did not suggest lenf methastasis. The histopathological examination of the biopsy material showed verrucous carcinoma.

change in sensibilization of population, but when tested all above aspects, we saw that each of them isn't in appropriate level and they was important determinations for level of caries and the quality of service. Exerting this problems we discuss the most important measurements.

PP 114 ThE ANThROPOMETRy Of ThE MANDIBULAR ON GROUPS Of SUBjECTS fROM DIffERENT GEOGRAPhIC AREAS Authors Bogdan Vascu, Cristina Iordache, Andrei Georgescu, Ana Maria Fatu Romania The mandibular bone,which is the mobile bone of the temporo-mandibular joint,is made-up of one horizontal part ant two lateral parts.In the middle of the anterior facet is the mentonal symphisis,an important craniometric point for both anthropometry and medical practice. The upward parts have an inward facet,an outward one and four edges:an anterior one,a posterior one,an upper one-with anatomic details-and a low one which continues the low edge of the horizontal part,forming an angle named gonion,which is also an important craniometric and anthropometric point.The horizontal part results embryological from the anterior part of Meckel's cartilage,while the rest of the bone results from the mesenchim of the first brahial arch. Sometime, the mandibular bone is absent, this one is called agnatism and it is due to the complete atresia of the mandibular buds.The micrognatism consist in a small mandibular bone,due to the partial atresia of the mandibular buds,and the macrognatism is due to the hypertrophy of the mandibular bone. Our study includes several groups of twenty persons from the following geographical areas:Europe,Asia,The Middle Orient and some African regions,such as Sudan, Maroco,Zaire.We measured the opening of the gonion angle and the distance between gonion and mentonal symphisis. The subjects coming from Europe(including Romanians)have the opening of the gonion about 100-105 degree,and the distance gonion-menton about 10-12 cm, on an average of 11cm. the Asians have about 105-110 degree and the distance gonion-menton is ranged from 12-14 cm, on an average of 13cm. The Africans we found an angle about 120-130 cm, degree and a distance gonion-menton raining from 14 to 20 cm, on an average of 16 cm. From these measurements we conclude the following: - the climate has an extremely favorable on the facial skeleton growth,explainig why for subjects coming from equatorial or tropical areas the viscerocranium has an increasing development and the osseous bulges are more evident;

PP 113 EDUCATION Of DENTISTRy IN ALBANIA Authors Disha Valbona Universitas Fabrefacta Optime." U.F.O'" University, Departament of Pedodontic, Albania Medical education is the most important indicator of public health. The aim of this study is analysis of the education form of population and analysis of educativ level on dentists, starting from high index of caries and quality of dentar service. Thereby, we can estimate today the form of treatment versus their patients. For this I have considerate family education, education on kindergarten, school, the materials in magazine or another publication, educational emission on television about dentistry, promotion of good dentar materials, programs for promotion of oral health in schools, the cyclic of education and additional training programs for dentist and the fact that Albania is developing country and long since it experience important change in all aspects of daily life. Of course that we see some

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- the larger the gonion angle is,the longer the distance gonion-menton is; - the gonion angle is the most suited site for the mandibular fractures in its traumatizes; - the approaching of the gonion to 90 degree increase the frequency of fractures because of the bone elasticity and resistance,which are extremely diminished in such situation

Material and method: The study included patients suffering from type 2 diabetes mellitus and it was made over a twoyear period, when we evaluated the periodontal status of the patients that had an endodontic treatment due to gangrene diagnose. Results: The registered data were statically analyzed. We followed the evolution of the endodontically treated teeth depending on the age of the diabetes and the type of antihyperglycemic treatment. Conclusions: The level of glycemic control has an influence on the evolution of the endodontic treatments, as the decrease of the metabolic control may determine a long period endodontic failure.

PP 115 IMMUNOhISTOChEMICAL EXPRESSION Of CD31 AND CD34 IN hUMAN DENTAL PULP Of TyPE 2 DIABETIC PATIENTS Authors Moraru Alina Iren, Manolea Horia, Tuculina Mihaela, Margaritescu Claudiu University of Medicine and Pharmacy Craiova, Faculty of Dental Medicine Purpose: By using immunohistochemistry methods we observed the vasculature of the human dental pulp of diabetic patients using CD31 and CD34. Material and Methods: 56 human dental pulps were gathered from 48 patients diagnosed with type 2 diabetes mellitus. The patients were male and females, age between 32 and 53 years old. The samples of the dental pulps were embedded in paraffin and then selected for immunohistochemical techniques, by using CD31 and CD34. The dental pulps were removed from healthy teeth, extracted for orthodontic and prosthetic reasons or molars 3. Results: The immunohistochemical techniques revealed a homogenous staining pattern with capillars and larger vessels. We noticed many new-formed vessels situated mainly under the odontoblastic layer in variable number depending on the patents age. Conclusions: The immunohistochemistry technique helps us to identify the vascular reaction in diabetic patients correlated with their age.

PP 117 ABERRANT ROOT DEVELOPMENT Of ThE MANDIBULAR PREMOLARS: A CASE REPORT Authors Esma Asuman Cavdar Ankara University Faculty of Dentistry/Department Endodontics, Turkey Presenting Autor: Esma Asuman Cavdar of

Poster Presentaions

Aim: To highlight anatomical variation in the mandibular premolars. Introduction: The endodontic treatment of mandibular premolars may be the most difficult teeth because of failure to recognise and/or treat multiple canals when they are present in these teeth. This case report illustrates the relatively uncommon anomaly of mandibular premolars with two roots branching in a mesiodistal direction. Case Report: The patient was a 24-year-old female who presented with constant pain in the mandibular left posterior area. A review of her dental history revealed that she had experienced intermittant pain for 2 week after having crown restorations placed on teeth 44,45 (FDI). Clinical and radiographic examination showed that the teeth were painful to percussion and the preoperative radiograph showed major canals which bifurcated into two canals with separate roots. After obtaining access, the canals were obtained and instrumented to # 35 and 40, respectively, and filled with gutta-percha. The patient was asymptomatic over a period of 12 months; no periapical pathosis was visible on the recall radiograph. Conclusion: It is important to be able to determine clinically and radiographically as closely as possible the true anatomy of teeth in order to minimize failure during routine dental procedures.

PP 116 ThE INfLUENCE Of DIABETES MELLITUS TyPE 2 OVER ThE ENDODONTIC TREATMENT OUTCOME Authors Alina Iren, Tuculina Mihaela, Andrei Victoria, Bataiosu Marilena, Diaconu Oana, Gheorghita Lelia University of Medicine and Pharmacy Craiova, Faculty of Dental Medicine Purpose: The purpose is to emphasize the existence of some correlations between the age of the diabetes, the type of medication and the apparition of apical periodontitis after an endodontic treatment.

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PP 118 AESThETIC MANAGEMENT Of SEVERELy DISCOLORED DEVITAL TEETh WITh CONSERVATIVE APPROAChES: REPORT Of TWO DEVITAL BLEAChING CASES Authors Arzu Bayalan Aldemir, Duygu Akkor, Ali Osman Mavis, Hilal Sonbay Ankara University, Faculty of Dentistry, Turkey Aim: To report two cases of successfully treated discoloured devital teeth by using devital bleaching techniques. Introduction: The number of patients asking for ultraconservative treatments is increasing; clinicians are starting to reevaluate the dogma of traditional restorative dentistry and look for alternative methods to build up severely destroyed teeth. Case 1: Female patient 22 years old has visited our dental practice for severely discoloured maxillary right central tooth caused by trauma and a common discoloration of teeth at both upper and lower jaw. A 35% hydrogen peroxide gel was applied into the pulp chamber and on the facial enamel.The in-office treatment was maintened by using a 10% carbomide peroxide at home bleaching agent according to the inside/ outside bleaching technique. The maxillary central tooth was then restorated with a composite veneer restoration for further aesthetic look. Case 2: Female patient 28 years old has presented with severely discolored maxillary right central tooth caused by trauma. Tooth shade lightening was achieved by walking bleach method by using using a sodium perborate material. The patient reached a higher shade value and a lower shade chroma at the end of the treatment. Results: Significant tooth lightening was reported after the completion of whitening therapy on devitalized teeth. Key Words: devital bleaching, sodium perborate, hydrogen peroxide

Purpose: The purpose of this study is to establish and compare in vitro the amount of debris and irrigant extruded apically, using one hand- step back technique with K-files and one engine-driven technique with K3 instruments. Material and Methods: Thirty extracted teeth with single canals were used. The teeth were divided into two experimental groups of 15 teeth. Group 1-the root canals were instrumented using K-files by step back technique. Group 2- the root canal were instrumented using enginedriven K3 instruments. Distilled water was used as an irrigant. Debris and irrigant extruded from the apical foramen during instrumentation were collected into vials(using the Myers and Montgomery technique) and the amounts were determined. Results: The results show, that both techniques produced extruded debris and irrigant through apical foramen. The values were: step back technique -0.41 ± 0.62 mg debris and 5.4 ± 1.54 mg irrigant The data were input and processed using the statistical software package SPSS 15.0.1. The level of significance for rejecting the null hypothesis was fixed at p<0,05. Conclusions: During biomechanical preparation of the root canal space by hand and engine-driven techniques, all instruments tested produced measurable apical extrusion of debris and irrigant.

PP 120 CALCIUM hyDROXIDE ROLE IN ChRONICALLy APICAL PERIODONTITIS TREATMENT Authors Mihaela Tuculina, Iren Moraru, Lelia Gheorghita, Olteanu Madalina University Of Medicine and Pharmacy - Craiova, Romania Objective: This study wants to evaluate the efficiency of calcium hydroxide treatment in different clinical cases, diagnosed as chronically apical periodontitis. Material and method: The clinical study considered 26 patients, 14 females and 12 males, age between 15-58 years. From the total of 26 cases 15 teeth were pluriradicular and 11 monoradicular. 14 cases were treated with calcium hydroxide in magisterial formula and 12 cases were treated using Dycal. Results: The evolution in time of the treatment was studied by periodic radiological exam (1 month, 3 months, 6 months), when the success of the conservative therapy was achieved. Discussions and conclusions: The calcium hydroxide treatment as first endodontic medication was successfully realized, the renewal of the endodontic dressing is made periodically until the dimension of the lesion is reduced and apical healing occurs. The disadvantage of this type of treatments is the long time needed, repeated reintervention may produce the radicular canal reinfestation, even if rigorous asespssy rules are respected.

PP 119 APICAL EXTRUSION Of DEBRIS AND IRRIGANT fOLLOWING USE Of hAND AND ENGINE-DRIVEN INSTRUMENTATION TEChNIQUES Authors Elka Radeva, Radosveta Vassileva Medical University - Sofia, Faculty of Dental Medicine, Sofia, Bulgaria Introduction: During biomechanical preparation of the root canal space, debris, irrigant, bacteria, necrotic tissue may be extruded into the periapical region leading to periapical inflammation and postoperative flare-ups.

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The medication treatment must be adapted to each clinical case and its evolution must be radiologically monitorised by following the patient for at least 6 months. The magisterial formula and the commercial formula Dycal lead to favorable results, proving the excellent qualities of the calcium hydroxide.

University of Medicine and Pharmacy - Craiova, Romania Introduction: The anatomy of the teeth creates favorable conditions for latent chronic infections, because the infectious process best develops inside tissues that don't have a proper defense system such as enamel or dentine or in places that are inaccessible for the antimicrobial systems, like the pulp chamber or root canals. Purpose: The purpose of the study was to identify some odontal and periodontal lesions that might represent starting point for focal disease. The clinical study gathered 22 patients with general clinical signs for an infectious disease. These clinical signs were boosted and prolonged by the effort, but especially by weather changes. The patients were continuously monitorised by a team of doctors formed by specialists in dental medicine, internal medicine and ORL. Results: The clinical exam of the oro-dental region emphasized the infection foci odontal and periodontal as follows: intradental, periapical, residual osteitis, periodontal. The correct treatment of these affections allowed complete rehabilitations of the patients' health. Discussions: The focal disease appears due to a microbial focus or a focus that results from tissue destruction substances, which is very well defined, even encysted, with a latent evolution. Although the clinical aspects are complex all the clinical phenomena ameliorate or disappear completely after the elimination of the potential pathological focal or foci. Conclusions: We can obtain good results by an efficient collaboration of a medical group of different specialists. The dentist must choose a rigorous and individually oriented purging method, which might be either a conservative treatment of the tooth or the tooth extraction.

PP 121 ChRONIC APICAL PERIODONTITIS RESULTING IN INTERNAL RESORPTION - A CASE STUDy Authors M. Vujaskovic, N. Tosic, N. Tosic University School of Dentistry, Belgrade, Serbia State Hospital "Stari Grad" Belgrade, Serbia Private clinic "Slava" Belgrade, Serbia Goal: The study\'s aim is to present successful endodontic therapy of side region teeth suffering from Chronic Apical Peridontitis. Methodology and material: The study deals with four cases of endodontic therapy of one premolar and three molar teeth. Primary x-ray probe revealed visible internal resorption in the root part of the treated teeth. The upper molars suffered resorption in the palatinal root region whereas the mesial root canals of the lower molar were affected. The x-ray picture also showed visible radiolucencies in the periapical region of the teeth. In all cases patients came to the treatment in the phase of acute exacerbation of Chronic Apical Peridontitis. Following the removal of significant quantity of granulation the teeth were mechanically processed and medically treated with a paste Chlumsky- Jodoform ­ Focalmin. A week later definite root obturation with Endomethasone paste and Gutaperka points was done. Results: Clinical and x-ray probe were after twelve months. All the teeth resumed their function and complete reparation was revealed on the x-ray picture. Conclusion: Despite great damage of the teeth in the form of significant resorption in the crown and root region being the result of an infection and complexity of the root system, a thorough mechanical processing and medical treatment along with hermetical obturation of the canals and the crowns led to the restoration of the function of the affected teeth.

Poster Presentaions

PP 123 CLINICALLy SUCCESSfULTREATMENT Of LARGE PERIAPICAL LESION USING CALCIUM-hyDROXIDE Authors Bojana Zarkovic, Ivana Kantardzic, Karolina Vukoje and Ljubomir Petrovic University of Novi Sad, Faculty of Medicine, Clinic of Dentistry, Serbia The aim of this paper is to show a clinical case of a single-root tooth with pulp necrosis and a large periapical lesion which reached full recovery after being treated with calcium-hydroxide. Endodontic therapy has been performed in accordance with contemporary standards i.e. the application of the crown down technique of canal instrumentation (using K type files) accompanied by extensive canal irrigation with 2.5% sodium hypochlorite solution, as well as medicament placement based on calcium-hydroxide. Four weeks later, calcium-hydroxide apical plug was placed in the apical portion of the canal (approximately 3 mm) and the remainder of the canal was

PP 122 CLINICAL ASPECTS Of ODONTAL AND PERIODONTAL LESIONS ThAT REPRESENT ThE STARTING POINT fOR fOCAL DISEASE Authors Mihaela Tuculina, Iren Moraru, Marilena Bataiosu, Oana Diaconu

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filled with gutta percha points and paste AH plus, by the lateral condensation technique. Clinical and radiographic results of the same tooth after one years' time showed a complete recovery of the periapical tissue. This goes to show that intersessional medication of infected canals, and if necessary making an apical plug, both with calcium-hydroxide, significantly contributes to the predictable success of radix resorptions.

Ankara University, department

Faculty

of

dentistry,

Endodontics

Dens evaginatus (DE) and dens invaginatus (DI) are rare developmental dental anomalies affecting both the primary and permanent dentitions. The Concurrence of DE and DI within the same tooth is a rare finding and has only been reported three times in the literature to our knowledge. DE arises most frequently from the occlusal surface on involved posterior teeth and primarily from the lingual surface of associated anterior teeth. Talon cusp, which is a variation of DE, is found in the primary and permanent maxillary incisor with variations in size, shape, length and made of attachment to the crown. DI is a developmental malmormation resulting from invagination of the tooth crown or root before calcification has accorred the permanent maxillary incisor are the most frequently involved teeth. The purpose of the present article is to describe the case of DE and DI affecting maxillary left lateral incisor and DE affecting a maxillary and mandibulary bilateral second premolar.

PP 124 COMPARISON Of MINERAL CONTENTS Of POWDER AND SET fORMS Of MTA PRODUCTS AND PORTLAND CEMENTS WITh ICP-AES TEChNIQUE Authors Ali Erdemir, Ayce Unverdi Eldeniz, Semra Sevimay, Ali Turkyilmaz, Yahya Orcun Zorba Kirikkale University, Selcuk University, Ankara University, Turkey Purpose: The purpose of this study was to determine the mineral contents of powder and set forms of four commercial versions of MTA products and two Portland cements with ICPAES Technique. Materials and Method: Four commercial MTA (ProRoot-MTA, Tulsa Dental, Tulsa, OK; MTA-Angelus, Angelus, Londrina, Brazil; MTA-Angelus-Branco, Angelus, Londrina, Brazil; MTA-Bio, Angelus, Londrina, Brazil) and two Portland cements (Gray and White Portland Cement, Cimsa, Mersin, Turkey) were used in this study. In the first group ten samples of all unset materials were prepared. In the second group the materials were mixed distilled water in 3:1 ratio. Ten samples in all set materials were prepared and allowed to cure at 100% humidity for 24 hours. The chips of set materials were obtained with a ceramic pestle. The levels of twenty six elements in each specimen were analyzed using the ICP-AES technique. The data were analyzed using one way analysis of variance and post-hoc Tukey tests. Results: The results showed that Ca ion was the dominant elements in all samples and its levels are about 35-39%. Bi ion was detected only in commercial products and its levels are about 13-17%. The levels of Mn, Ni, Pb, Fe, Ba, Cr, Cu, Co were significantly increased in Gray Materials (p<0.05). Conclusions: The results showed that the most of mineral levels in powder and set forms of MTA products and Portland cements were similar. Major elements except Bi levels were similar in all materials. Some differences were detected in the levels of minor elements.

PP 126 DENS IN DENTE TyPE II ENDODONTIC TREATMENT WITh PROROOT MTA Authors Ruxandra-Ilinca Matei, Ozana Alexandrescu, Gabriel Moisa Faculty of Medicine and Pharmacy, University of Oradea, Romania Faculty of Dental Medicine, "Titu Maiorescu" University Bucharest, Romania Dental internal anatomy, especially root canals and shape aberrations, is crucial to achieve an endodontical therapy success. Finding out and emphasizing the root canals anatomy will allow the practitioner to realize an appropriate root canal filling and to avoid any further complications. Here we present a case of a young male with dens invaginatus (dens in dente) type II, left upper second incisor, which had a pulpal affection. The pulpal problem was solved with an ProRoot MTA® endodontical filling material.

PP 125 DENS EVAGINATUS AND DENS INVAGINATUS WIThIN ThE SAME TOOTh AND MULTIPLE DENS EVAGINATUS IN ThE SAME PATIENT Authors Meltem Akyol, Meltem Dartar Oztan, Kubra Atici

PP 127 DETERMINATION Of POLyMERIZATION DEGREE Of NEW RESIN BASED ROOT CANAL SEALERS WITh fTIR TEChNIQUE Authors Ali Erdemir, Yahya Orcun Zorba, Ayce Unverdi Eldeniz, Beniz Gunduz Kirikkale University, Selcuk University, Turkey

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Purpose: The purpose of this study was to determinate the degree of conversion of new resin based root canal sealers in simulated root canals with and without light source. Materials and Method: One hundred twenty black plastic cylinders with an internal diameter of 2mm and length of 15mm were used in this study for simulating root canals and divided into two main groups. The simulated root canals were obturated with EndoRez (Ultradent, South Jordan, UT) and Epiphany-SE (Pentron, Wallingford, CT) respectively in Group 1 and Group 2. The specimens were divided into 2 subgroups of 30 specimens each which were photoactivated or not. The samples were stored in 100% humidity at 37oC. In each groups, ten samples were analyzed after 1, 7 and 14 day. The degree of conversion was measured at three different location (coronal, middle and apical) using by Fourier transform infrared spectroscopy (FTIR, Perkin-Elmer, USA). The data were analyzed by two way ANOVA. Results: The results showed that there were no significant differences in conversion degree of both root canal sealers (p>0.05). Use of photoactivation in curing of the sealers was affected conversion degree significantly (p<0.05). The degree of conversion was significantly decreased in 1 day groups without photoactivation (p<0.05). Regardless of time, the location (Coronal, middle, apical) was not affected the degree of conversion significantly (p>0.05). Conclusion: The results showed that the speed of conversion was increased with photoactivation in short time interval. The location of root canal sealers was not affected the degree of conversion.

PP 129 EffECT Of ChLORhEXIDINE SOLUTION AND GEL fORM ON Ph VALUES AND CALCIUM ION RELEASE Of CALCIUM hyDROXIDE Authors Ali Erdemir, Sefika Nur Akyuz, Yahya Orcun Zorba, Miyase Cinar Kirikkale University, Turkey Purpose: The purpose of this study was to evaluate the effect of chlorhexidine solution and gel form on pH values and calcium ion release of calcium hydroxide. Materials and Method: Calcium hydroxide powder were mixed with either 2% chlorhexidine solution (Drogsan, Ankara, Turkey) (Group 1), 1% chlorhexidine gel (Drogsan, Ankara, Turkey) (Group 2), glycerin (Group 3) or distilled water (Group 4). Calcium hydroxide combinations were placed in 1cm long and 4mm diameter polyethylene tubes. The tubes were then immersed in a glass flasks containing 10 mL distilled water (n:10) and stored at 37oC. At predetermined time intervals (1, 3, 7, 14 and 28 days) the pH of the distilled water was measured with a pH meter and the calcium ion release was determined by using spectrophotometry. Statistical analysis was performed by ANOVA for each time interval studied and individual comparisons were performed by using Tukey HSD Test. Results: The calcium hydroxide and Chlorhexidine gel combinations showed the lowest pH values and Ca ion release at all time intervals (p<0.05). There were no significant differences at 1 and 28 days in the other groups (p>0.05). Use of Glycerin or distilled water as a vehicle of calcium hydroxide showed higher pH values and calcium ion release than the chlorhexidine solution group at 7 and 14 days (p<0.05). Conclusions: The results of this study indicate that use of chlorhexidine gel as a vehicle of calcium hydroxide was not good choice for pH values and calcium ion release of calcium hydroxide mixtures.

Poster Presentaions

PP 128 DIAGNOSTIC X-RAy STATUS Of PATIENTS TREATED By STUDENTS Authors Assoc. Prof. Snezhanka Topalova-Pirinska, Dr Lili Doichinova Faculty of Dental Medicine, Medical University, Sofia, Bulgaria The aim of investigation is to show diagnostic X-ray status of Bulgarian patients who need students' dental treatment. 251 patients treated during the clinical practice of students in fifth course were investigated. 46,22% of them were men and 53,78% women. Their average age was 48, 23±17,18 in the range of 12 to 87 years. The regressive analysis shows that increasing of the age leads to an average decreasing of the teeth with 2,28 per decade. The most obvious decreasing (4 teeth) is observed between the decades 30-39 years and 40-49 years. There are no of the patients having 32 teeth in the mouth after 49 years. The investigation also includes the dynamics of other factors like: vital and non-vital teeth, endodontic treated teeth, teeth with periapical lesions, etc.

PP 130 EffECT Of DIffERENT BASE MATERIALS ON PEROXIDE LEAKAGE WhEN USING 10% CP DURING INTRACORONAL BLEAChING Authors Aysegul Asal Cali, Berkan Celikten, Zuhal Davut Duzgun, M. Ongun Saka, Prof. Dr. Fatmagul Ziraman Ankara University, Faculty of Dentistry, Turkey Purpose: External root resorption may develop following intracoronal bleaching with hydrogen peroxide (HP). In this study, the preventive effect of different base materials on the radicular penetration of HP during intracoronal bleaching assessed. Material and Method: 40 human mandibular premolar teeth divided into four groups. The roots were removed 2mm apical

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to the cementoenamel junction and the pulp tissue was removed a #4 round bur. After the preparation of teeth; isolating barrier materials were placed 2 mm below the CEJ. In the first group, zinc phosphate cement; in the second, glass ionomer cement; in the third, composite resin and in the fourth, coroseal were used. The radicular cementum and the CEJ were sealed with sticky wax and a double layer of varnish. All teeth were immersed in a plastic tube containing 2 mL of bidistile water, 10% carbamide peroxide gel placed into the pulp chamber of experimental teeth and access cavities were sealed with cavit. Teeth left 24 h at 37°C. HP penetration was measured using the ferrothiocyanate method. Results: There was no statistically significant difference between coroseal and composite resin groups, and between zinc phosphate and glass ionomer groups. Although HP penetration was not found statistically significant between coroseal and composite resin; on the other hand between zinc phosphate and glass ionomer ; lower HP penetration occured with coroseal and composite resin groups than zinc phosphate and glass ionomer groups. (p<0.05) Conclusion: HP penetration occured in all four groups but it is found that penetration is lower in composite resin and coroseal groups.

Conclusions: The results of this study indicate that ProRoot MTA and Portland cement induce the most favourable release characteristics among five different pulp-capping materials.

PP 132 EffECTIVENESS IN PULP INfLAMMATION Of COMBINED PASTE WITh PROPOLIS, ROyAL jELLy AND Ca(Oh)2 Authors Aida Meto, Agron Meto University "Nostra Signora Del Buon Consiglio" & University of Medicine - Department of Stomatology, Tirane, Albania It's important for the dentist to make an early efficacious treatment of initial and partial pulp inflammatory processes. This would prevent the partial or total destruction of pulp. Royal Jelly and Propolis are known by the folk medicine for their antitumor, antioxidant, antimicrobial, anti-inflammatory, and immunomodulatory effects. Objectives: To assess the anti-inflammatory, regenerator and analgesic effect of this combined paste [Royal Jelly, Propolis, Ca(OH)2]in vital pulpotomy.

PP 131 EffECT Of DIffERENT MATERIALS USED AS PULP CAPPING ON Ph AND CALCIUM-ION RELEASE Authors Ali Erdemir, Sefika Nur Akyuz, Miyase Cinar, Yahya Orcun Zorba Kirikkale University, Turkey Purpose: The purpose of this study was to evaluate the pH and calcium ion release from the different pulp-capping materials. Materials and Method: Five different pulp-capping materials (ProRoot MTA, Tulsa Dental, Tulsa, OK; Portland cement, Cimsa, Mersin, Turkey; Dycal, Dentsply, Konstanz, Germany; Life, Kerr Corporation, Romulus, MI; Calcimol LC, Voco Products, Cuxhaven, Germany) were mixed according to manufacturer instructions and inserted to polyethylene tubes with 1 cm long and 4 mm diameter. The tubes were individually immersed in glass flasks containing 10 mL distilled water (n= 10) and stored at 37°C. The control group contained distilled water with empty tubes (n=10). At predetermined time intervals (3 h, 24 h and 3, 7, 14, and 28 days) the pH of the distilled water was tested with a pH meter and calcium ion release was determined by using spectrophotometry. Statistical analysis was performed by one way ANOVA for each time interval and individual comparisons were performed by using Tukey HSD Test. Results: ProRoot MTA and Portland cement showed higher pH and calcium ion release than the other groups at all time intervals (p<0.05). There is no significant differences between Kerr life and Dycal groups on pH and calcium ion release (p>0.05). The lowest pH and calcium ion release was measured in light polymerized calcium hydroxide group.

Method, Patients and Materials: This is a trial study rendered in patients with pulp hyperaemia,pulp accidental exposition and partial pulp inflammation.60 patients selected in continuity during the study. 50 females and 10 males with a mean age was 22.4+5.1 years old. The have no other chronic diseases that may interfere in healing. 10 patients had pulp accidental exposition, 30 had pulp hyperaemia and the other patients had partial pulp inflammation.After teeth caries cleaning (removing the damaged dentine) we applicated the paste composed with Royal Jelly, Propolis, Ca(OH)2) in contact with pulp. In the advanced pulp inflammation we made coronary pulp amputation conserving radicular pulp. For the definitively cavity filling we use amalgam and composite. We make a clinical (pain, sensitivity, pulsing) and radiological assessment after 3 and 6 months. Results: We identified secondary dentine in the patients with pulp accidental exposition 60% of cases after 3 months and in the after 6 months in all the cases (100%). In the patients with pulp hyperaemia we identified secondary dentine only after 6 to 8 months (all the patients). In patients with Advanced Pulp Inflamation (Partial Pulp Inflammation) that made coronary pulp amputation,we noticed neodentinal bridge after 6-8 months the procedure. Conclusion: The results confirm the anti-inflammatory, antimicrobial and regenerative effects of the combined paste with Propolis, Royal Jelly and Ca(OH)2 in pulp inflammation.

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PP 133 ENDODONTIC MANAGEMENT Of A PATIENT WITh MULTIPLE PERIAPICAL LESION Authors Sabri Cora, Tamer Tasdemir, Erhan Tahan Karadeniz Technical University, Faculty of Dentistry, Department Of Endodontics, Turkey Apical periodontitis is a persistent inflammatory disorder of the periradicular tissues caused by microorganisms in the infected root canal systems. In fact, this disease is thought to be a defensive reaction of the body against to the breakdown of the pulp and microbial infection in canal systems. On the other hand, the lesion gradually becomes smaller following successful endodontic treatment. In the resorption area new bone tissue formation in the apical zone is provided. New cementum layers develop at the root apex. Periapical tissue healing after root canal treatment depends on the patient's age, systemic condition, iflammatory situation of the pulp and periradicular tissues, if any available periodontal disorders, occlusal trauma, technical complications, biomechanical preparation of the canal systems, canal antiseptics and application methods. In this case report, endodontic treatments of 19 teeth of a 36 year-old female patient presenting periapical lesions are described. After 12 months from the initial treatment, healing was evident exactly in all teeth.

Authors Semra Sevimay*, Canan Ogan-Hascicek, Nilufer Tarimci, Arzu Bayalan* *Ankara University, Faculty of Dentistry, Department of Endodontics, Ankara University, Faculty of Pharmacy, Department of Pharmaceutical Technology, Ankara, Turkey. The purpose of the study was to investigate the surface tensions and cleansing ability of NaOCl and chlorhexidine (CHX) solutions at different concentrations and temperatures. Firstly, the surface tensions of NaOCl (5%, 2.5%) and CHX (2%, 0.2%) solutions were measured at different temperatures (21°C, 37°C, 50°C). Secondly, the canals of 62 single-rooted teeth were instrumented. During preparation, the canals irrigated with these solutions at different temperatures as mentioned above. The cleansing ability in root canal of the solutions was evaluated by SEM. The results showed that the difference between means of surface tensions measured at different temperatures and concentrations was statistically significant (p<0.01). Surface tension decreased as heat of the solutions increased. It decreased at low concentration of NaOCI while it increased at low concentration of CHX. In SEM, smear layer on the canal surfaces of teeth treated with solutions was observed. Heat and concentration of solutions influenced the cleansing of canals from superficial debris. The heavy smear layer and more debris was observed at 21°C with 5% NaOCl while smoother smear layer and less debris was observed at 50°C with 2% CHX. No solution completely removed debris in apical third.

Poster Presentaions

PP 134 ENDODONTIC TREATMENT Of SECOND MAXILLAR MOLAR WITh TWO PALATINAL ROOTS Author Ivan Jovanovic Private dental office Dr. Barjaktarevic, Belgrade, Serbia The aim of endodontic treatment is elimination of pulp tissue from root canal, cleaning, shaping and definitive obturation. The possibility of two palatinal roots in maxillary second molars is very rare. Treating extra canals in maxillary second molars may be challenging and inadequate treatment of root canals may cause failures. This case report demonstrate endodontic treatment of the second maxillar molar with two palatinal roots, also the importance of good radiographics and an improved access cavity in detecting additional canals. Key words: endodontic treatment, maxillary second molar, two palatinal roots PP 136 fACTORS INVOLVED IN ThE APPARITION Of ThE PULP MINERALIZATIONS Authors Liana Aminov1, Mihaela Salceanu2, Anca Melian3, Raluca Dragomir2, T. Hamburda2, Maria Vataman4 1 Junior assistant, Department of Endodontics 2 Assistant, Department of Endodontics 3 Lecturer, Department of Endodontics 4 Professor, Department of Endodontics UniversityofMedicineandPharmacy,,Gr.T.Popa"Iasi,Facultyof Dental Medicine, Department of Endodontics, Iasi, Romania The aim of this presentation is to highlight the structural changes which appear in the pulp tissue in the process of time and to notify the pulp mineralisations under various aspects: denticles, pulp stones and diffuse mineralisations. Methods: In view to evaluate the frequency of these mineral deposits related with the patients age, two groups of subjects were studied: 70 young subjects aged 18-35 years (42 men, 28 women) and 90 subjects aged 60-80 years (53 men, 37 women), in which was analised the influence of some irritating factors in time, considered as potential causes for the appearance of the pulp calcifications. The study on the two groups aimed to emphasize the mineral structures by radiographic exams and, were

PP 135 EVALUATION Of SURfACE TENSIONS AND CLEANSING ABILITy Of SODIUM hyPOChLORITE AND ChLORhEXIDINE SOLUTIONS AT DIffERENT CONCENTRATIONS AND TEMPERATURES

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extraction was indicated, by microscope examination. After the teeth extractions and pulpectomies, some aspects regarding the shape and structure of the pulp stones were pointed out, many of them being caught in different stages of evolution. Results: Most of the cases with voluminous mineralizations were found in non-vital teeth with carious processes that evolved to septic necroses (74,2% first group, 42,2% second group), smaller mineralizations were observed in vital teeth with obturations (68,6% first group, 59,9% second group) or with periodontal diseases (12,8% first group, 67,7% second group). Conclusion: We can state that pulp calcifications have various manifestation forms, depending on the specific individual pulp reaction. In addition to this, the intensity of the external irritative influences, cumulated in time, makes this kind of manifestations to be met especially in older people. The possible involvement of a nanobacteria, named Nanobacterium Sanguineum is also discussed. Key Words: pulp mineralizations, nanobacterium sanguineum. irritative factors,

The aim of this article to describe the healing of the periaipical pathology of tooth with immature root. This article presents a case of 40 year old male patient has a immature root 13 (FDI). The tooth showed symptoms of irreversible pulpitis, accomponied by periodontal inflamation. A local pocket (7mm) was detected and copius bleeding and spongy feeling was observed at the resorptive defect region. The first radiographic examination showed a wide radiolucent area around the apex. After root canal treatment, surgical procedures were planned. The resorption site was chemo-mechanically debrided and irrigated. MTA was used to fill the resorptive defect. The final coronal restoration is made after 10 days with composite restorative material. The radiographic examination of 6 months, 12 months and 18 months showed adequte repair of the resorption and endodontic success. The tooth was clinically asemptomatic and no periodontal problem was found. Key Words: Immature root, mineral trioxide aggregate

PP 137 fRACTURE INSTRUMENT MANAGMENT TEChNIQUES. CASE REPORTS Authors Mastoras Konstantinos, Kodonas Konstantinos, Gogos Christos Department of Endodology, Aristotle University of Thessaloniki, Greece During root canal preparation, instrument separation is an often incident. Separated instruments usually prevent access to the apex and the prognosis of teeth with broken instruments may be compromised. The factors influencing removal should be identified carefully. The potential to safely remove a separate instrument is further guided by the initial diagnosis, morphology of root canal system and the type and location of separated instrument. Separated instruments can be removed due to technological advancements in vision, ultrasonic instrumentation, and microtube delivery methods. This poster presents three clinical cases of fractured instrument management, using a combination of hand instrumentation, ultrasonic device and microtube system.

PP 139 IMMUNOREGULATORy CyTOKINES IN PERIAPICAL LESIONS Authors Lukic A, Gazivoda D, Colic M. The School of Dentistry, University of Belgrade, Serbia Periapical lesions are chronic inflammatory processes in the periapical tissue, induced by the infection of dental pulp. In their pathogenesis both proinflammatory and antiinflammatory mechanisms are involved. Immunoregulatory cytokines are important for control of inflammatory and immune processes. However, little is known about their production in periapical lesions and the relationship with proinflammatory cytokines. The aim was to exmine the production of TGFbeta and IL-10 by inflammatory cells in culture isolated from human periapical lesions. The study included 31 samples of periapical lesions (symptomatic lesions: n = 13; asymptomatic lesions: n = 15). Based on the predominance of T cells or B cells the lesions were divided into T-type (n = 15) and B-type (n = 12), respectively. Cytokines were measured by specific ELISA kits, whereas phenotypic characteristics of infiltrating lymphocytes were determined by immunocytochemistry. The levels of both cytokines were detectable in all samples and did not significantly differ between symptomatic versus asymptomatic lesions. In contrast to IL-10, inflammatory cells from B-type lesions produced significantly higher levels of TGF-beta, than T-type lesions. In spite of these differences, there were positive correlations between the levels of IL-10 and TGF-beta in asymptomatic and B-type lesions. Conclusion: This results suggest that immunoregulatory mechanisms are more operative in chronic asymptomatic lesions with the predominance of humoral immune response and are supportive of the hypothesis that such processes are characteristic of an advanced stage in the development and healing of periapical lesions.

PP 138 A CASE REPORT: hEALING PROCCESS fOR PERIAPICA PAThOLOGy Of IMMATURE ROOT Authors Ali Osman Mavis, Arzu Bayalan Aldemir, Duygu Akkor Ankara University, Faculty of Dentistry, Endodontics Department, Ankara, Turkey

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PP 140 INfLUENCE Of DISEASE AND PERIODONTAL ThERAPy ON ENDODONTICS PAThOLOGy Authors Marta Girdea, Silvia Martu Ovidius University, Faculty of Dental Medicine, Constana, Romania Introduction: Between endodontic space and periodontium exist a close interdependence, which may cause damage to one response from the other. This interrelationship is determined that the tooth and periodontium is a functional unit. Endoperiodontal lesions are any inflammatory lesion that has its origins in the pulpar or periodontal ligament, which has the potential to expand from one region to another in several ways. Purpose: The disease can affect periodontal and pulpar status through and / or side channels. Once the pulp is inflamed secondary may in turn affect periodontal primary lesion. Periodontal therapy (debridement, curettage and surgical interventions with flap) may lead to secondary pulpar pathology by opening side channels or radiculars canalicules in oral environment which lead, ultimately, on pulpar disease. Periodontal disease progression by evolution can find a channel or open side and therefore to result in necrosis pulp. Post operator vital teeth may present symptoms of necrotic pulp. In this case indicates endodontic therapy in addition to the periodontal one. Material and method: A periodontal lesion may, in the same manner to expose the lateral canals or apical foramen. This aspect is most obvious on pathology of endo-periodontal so long described as a retrograde pulpitis. This study is made on the teeth wich not had any lesion cavities, no restoration, but periodontal severely affected, as shown 33% of these teeth were pulp was inflammated and 10% with pulp necrosis. Results and conclusions: Pulpar impairment was considered as a consequence of the existence of accessory canals. At the same time presents a pulp capacity of defense against periodontal disease irrigation as long as apical alterate. In is generally not pulpar necrosis occurs before the microorganisms to infiltrate to the dental apex. Keywords: pulpar periodontal poquet. inflammation, laterals canalicules,

Introduction: Mineral trioxide aggregate (MTA) is nowadays, the material with the best behavior in the apical tissues. Aim: The aim of this study was to examine the clinical an and radiographic appearance of teeth suffered of chronic periapical lesions (HAP), and were treated by MTA apical plug technique. Materials and methodes: This report includes 20 single rooted theet with HAP. Endodntic therapy was conducted in a crown-down mode using hand K-files, and machine-driven Ni-Ti instruments, lubricated wuth Canal+ (Septodont, France), and irrigating with 1% solution of sodium hypochlorite. The canals were dried and filled with calcium hydroxide, and after 4 weeks this material was removed from canal spaces. MTA as apical plug was placed in the apical portion of canals, and after one week, the canals were back-filled with lateral cold condensation technique. Canals were reviewed after obturation, and at 12 months follow-up appointments. Radiographic hilling was classified by following criteria: 1. complete healing, 2. incomplete healing, and 3. unsatisfatory healing. Results: Obtained results showed 17 canals as successful treated cases, with complete regeneration, and in 3 cases radiographic follow-ap revealed incomplete healing. Conclusions: Ortograde MTA apical plug technique resulted in a successful outcome at 1 year.

Poster Presentaions

PP 142 NON-VITAL BLEAChING: A CASE REPORT Authors Enida Petro, rgysejda Hoxha, Prof. Diana Brovina, Manola Kelmendi Faculty of Dentistry, Tirane, Albania Introduction: Tooth discoloration varies in etiology, appearance, localization, severity, and adhesion to tooth structure. Purpose: In this case we want to value that for non-vital teeth internal bleaching can be a success in endodontic. Material and Method: Both root canal treatment and nonvital bleaching were performed at the same visit. We used internal bleaching medication to restore the tooth's natural color without necessitating a crown and a fiber post for root treatment.

PP 141 MINERAL TRIOXIDE PRACTICE

AGGREGATE

IN

ENDODONTIC Results: Non-vital bleaching is safe, easy and simple for the patient. Conclusion: The patient liked this treatment because she saved money and time. Non-vital bleaching can usually be completed in two very short visits, making it both convenient and affordable.

Authors Teodorovic N., Vujaskovic M., Beljic-Ivanovic K. School of Dentistry, Department of Conservative Dentistry and Endodontics, University of Belgrade, Serbia

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PP 143 PRIMARy AND SECONDARy CEMENT AROUND APICAL fORAMEN ON MESIAL AND DISTAL ROOT Of PERMANENT fIRST MANDIBULAR MOLARS Authors Milica Jovanovic-Medojevic, Medojevic Jovana Juloski, Aleksandar

root canal obturation materials: gutta-percha/AH plus or MMseal and Resilon/Epiphany SE. Methods: A total of 100 teeth with single straight root canals were randomly divided into three equal groups of 30 samples each, with the other 10 teeth (5 positive and 5 negative) used as controls. Each irrigation group was divided into three groups according to the use of three different root canal obturation materials: Gutta-percha with AH plus or MM-seal, Resilon with Epiphany SE. The crowns were removed at the cementoenamel junction with a diamond disc under water coolant. The root canals were prepared using step-back technique and irrigation with either sodium hypochlorite (2.5%), chlorhexidine (2%), or MTAD solutions. The roots were obturated with lateral condensation technique using one of the obturation materials. The root surfaces was coated with two layer nail varnish (except apex), placed in 2 % methylene blue dye solution, and centrifuged at 3000 rpm for 5 minutes. Results: Irrigation solutions affected the apical sealing ability of all the sealers. The chlorhexidine irrigation solution exhibited higher apical leakage values than did MTAD and NaOCl in all canal sealers, although the MTAD irrigation solution groups showed the least leakage values.

Clinic of Conservative Dentistry and Endodontics, School of Dentistry, Belgrade/ Med.a.dent, private ord, Institute for Health Protection of Ministry of Internal Affairs, Belgrade, Serbia Accurate knowledge of canal anatomy is one of the keys to success when performing root canal treatment. The Aim: The aim of this project was to determine the diameter of primary and secondary cement around apical foramen on mesial and distal roots of the permanent first mandibular molars in different age groups. Material And Method: Fifty extracted first mandibular molars were collected,from the diferent gender.All teeth were divided into three groups:to twenty five years (15 teeth),from twenty five to fifty years (20 teeth) and over fifty one years (15 teeth).Mesial roots were cut at the level of the apical foramen.Examinations was done using polarized microscope (Leica DMLSP), digital camera (Leica DC 300), PS and scener. Results: Results showed the higest diametar of primary cement on apical foramen was in second age group (2.139 mm on mesial and 1.379 on distal root).The highest diametar of totaly cement on mesial root apex was in second age group(1.045 mm),then in the third(1.039mm),and the lowest in first age group(0.666 mm).Totaly cement diametar on distal root apex was 0.681 mm in first,1.039 mm in second and 0.732 mm in third age group. Concusion: Exmination of the apical region of the first mandibular molar using polarized microscope showed different diameter of primary and secondary cement around apical foramen. Knowledge of the anatomy of mandibular molars with optimal voluminous extension of the biomechanics preparation on apical foramen, can ensures a succesessful endodontic treatment.

PP 145 ThE EffECT Of ThE DISTANCE BETWEEN ThE POST RESTORATION AND ThE REMAINING ROOT CANAL fILLING ON ThE PERIRADICULAR STATUS IN A TURKISh SUBPOPULATION Authors Zeynep Ozkurt, Mehmet Baybora Kayahan, Ender Kazazoglu, Gunduz Bayirli Yeditepe University, Faculty of Dentistry, Istanbul, Turkey

PP 144 ThE EffECT Of IRRIGATION SOLUTIONS ON ThE APICAL SEALING ABILITy Of ROOT CANAL OBTURATION MATERIALS Authors Emre Bodrumlu, Esra Parlak, Ebru Hazar Bodrumlu Ondokuz Mayis University, Faculty of Dentistry, Samsun, Turkey Introduction: The irrigation solutions could be affected the sealing ability. Aim: The aim of this study was to assess the effect of three root canal irrigation solutions on the apical sealing ability of three

The aim of this study was to evaluate the effect of the distance between the post restoration and the root canal filling on the periapical health. Panoramic radiographs of 1633 randomly selected patients were evaluated by two observers. The total number of endodontically treated teeth with posts was 407. Quality of root filling, gap occurance between the root canal filing and the post restorations were evaluated. Apical status was assessed by the Periapical Index scores and Chi-Square test was used for statistical analysis.The results stated that the teeth with adequate root canal fillings had significantly more periapical pathosis if there was a distance between the post restoration and the root canal filling (p<0.001). It can be concluded that the distance between the post restoration and the remaining root canal filling was a significant contributing factor on the periapical health.

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Conclusion: The apical sealing ability of AH plus, Epiphany SE and MM-seal root canal sealers decreased when the chlorhexidine was used as an irrigation solution.

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PP 146 ThE ROLE Of QUALITy PARAMETERS fOR RADICULAR OBTURATIONS ON PREVALENCE AND DISTRIBUTION Of PERIAPICAL LESIONS Authors Salceanu M, Melian A, Hamburda T, Topoliceanu C, Melian G, Vataman M Faculty of Dental Medicine, U.M.F."Gr.T.Popa" Iasi, Romania Our study aimed to establish the role of quality parameters for radicular obturations on prevalence and distribution of periapical lesions on teeth with endodontic treatments. Material and Methods: Study group included 167 patients (58 males; 109 females) with age ranging between 20 and 59 years, with 596 teeth endodontically treated. The quality of radicular obturations (length, density) and diagnosis of different forms of periapical lesions were assessed using radiographic exam. Data were recorded in tables and presented in Microsoft Excel graphs. Results and discussions: Accordingly to quality standards for parameters length and density, we found 38,9% adequate radicular obturations, 39,5% subobturations, 5,3% supraobturations, 15,9% teeth with radicular obturations with adequate length and poor density.. Endodontically treated teeth with periapical lesions presented 33,7% fibrous periapical lesions, 41% periapical granuloma, 9% radicular chists, 26,3% periapica l difuse osteitis. The prevalence of periapical lesions was the least in adequate radicular obturations (17,6%); subobturations were associated with the highest prevalence of periapical lesions (80,9%), and radicular obturations with adequate length and poor density were associated with periapical lesions in 63,1% cases. Conclusions: The quality of radicular obturations can influence significantly the prevalence of periapical lesions as well as the success of conservative endodontic therapy of periapical lesions.

Purpose: The parallel development of new instruments and materials, along with a better understanding of the biology of wound healing, has made surgical treatment a viable alternative to extraction and tooth replacement, rather than a treatment of last resort. At this treatment prosedure we aimed to remain teeth in function with apicectomy. Materials and method: In this case report different teeth of three patients who had persistent periradicular pathoses, were applied apicectomy, although root canal therapy were tried. Mucoperiostal flaps were elevated, apical part of teeth were removed with fissur carbide frez and lesion regions were cleaned with curette. In all cases MTA were used as root-end filling materials. At the end of the surgery flaps were sutured. Results: After 6 month later patients were called, radyographic and intraoral inspection were made. After 6 month there were no remaining symptoms (pain, mobility, swelling etc.). Also in periradicular radyographies there were no site of periradicular lesions. Conclusions: If patient has persistent periradicular pathoses, apicectomy is a good alternative to extraction of teeth.

Poster Presentaions

PP 148 TREATMENT Of INTERNAL RESORPTION WITh ChRONIC APICAL PERIODONTITIS By CONVENTIONAL ENDODONTIC APPROACh: TWO CASE REPORTS Authors Yilmaz Karan F., Sonat B., Ankara University Faculty of Dentistry, Ankara, Turkey Introduction: The etiology of internal resorbtion is unknown but it is generally believed that triggering factors are infection, persistent chronic pulpitis and traumatic injuries. Aim: The aim of this study is to show with two case reports that internal resorbtion with chronic apical periodontitis can be resolved with conventional endodontic therapy. Materials and Methods: In the first case a 40 years old man attended to our clinic. Radiographic examination revealed an extended apical lesion and internal root resorbtion on the right central incisor tooth. In other case 38 years old woman attended our clinic.She had similar radiographic findings in right mandibulary first premolar tooth. Teeth were endodontically treated. During the treatment procedure after instrumentation and irrigation root canals dressed with interim calcium hydroxide. Canals were obturated with gutta-percha and AH 26 root canal sealer, using a lateral condensation technique. Results: In the follow-up examination after 1 year, no clinical and radyographic symptoms were found. The apical lesions of teeth were observed succesfully healing. Conclusion: Internal resorbtion with chronic apical periodontitis can be resolved with conventional endodontic therapy. According to these cases the location of the internal resorbtion and the lack of perforation in resorbtive cavity

PP 147 ThREE DIffERENT APICECTOMIES: CASE REPORT Authors Tolga Han Edebal, Aysegul Asal Cali, Meric Altun Ankara University, Faculty Of Dentistry, Ankara, Turkey Introduction: Although nonsurgical endodontic treatment gives good results in most cases, surgery may be indicated for teeth with persistent periradicular pathoses that have not responded to nonsurgical approaches. One of the common surgical scopes of endodontic therapy which involves the surgical removal of the tooth root apex, is known as apicectomy, or root end resection, which may be performed alone or in junction with placing a retrograde filling to seal the apical part of the root.

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advocate our prolonged treatment with calcium hidroxide to surgical intervention.

PP 149 TREATMENT Of TRAUMATIC INjURIES (CROWN fRACTURE, SUBLUXATION, AVULSION) TO PERMANENT MAXILLARy INCISORS (4 yEARS fOLLOW-UP) Authors Sonat B., Cetiner S., Ozkocak I., Yilmaz Karan F. Ankara University, Faculty of Dental Medicine, Ankara, Turkey Trauma to the maxillary anterior teeth is a frequent problem in children and adolescent. Traumatic injuries affect dental hard tissues and periodontal tissues of teeth and among them all tooth avulsion is the most serious. Aim: The purpose of the following case report is to describe both the therapy of traumatic injuries to maxillary incisors of a patient and the findings recorded at the follow-ups. Case report: A 9-years old girl's maxillary incisors are injured due to a domestic accident. The left central incisor had been completely avulsed, left lateral incisor complicated crown fracture, right central incisor had been subluxation and crown fracture. After 4 hours patient arrived to dentist, the tooth was replanted and splinted. Root canal treatment was started also on tooth 21, 22 and 11 and they were dressed with calcium hidroxide (Hypo-Cal, Ellman international)for 2-6 weeks.Gutta percha root canal obturation were completed on teeth. The patient and her parents were informed of the guarded prognosis. Clinical and radiological examinations were conducted 3rd, 6th, 12th months and subsequently every 6 months. Although replacement resorption, infraocclusion and discolorations of crown were observed after 48 months at the follow-up examination we are trying to keep the tooth for its esthetic and functional necesities till the time of other treatment modalitie can be applied.

The aim of the present study was to examine the acid phosphatase enzymatic activity of the deciduous dental pulp in the conditions of inflammation. Human dental pulp was obtained from three healthy deciduous canine teeth, extracted for orthodontic reason, and three pulpitic teeth. The tooth pulp was excavated completely, washed with sterile 0,008 mol/L NaCl, weighed and frizzed to -18 C. The pulp was transferred to a medium (phosphate buffer, pH=7,4; 0,08 mol/L NaCl), and homogenized in a Potter-Elvehjem homogenizer. After 10 minutes centrifugation with 3000 rpm and decantation, the enzyme activity was determined in supernatant, with spectrophotometric method, according to Andersch & Szcypinski and Fishman for acid phosphatase activity. The results obtained in this study are showing low value of specific acid phosphatase enzymatic activity in deciduous dental pulp - 0,144 U/g, but statistically significant high value in pulpitic teeth - 0,736 U/g. Enzymes are responsible for tissue destructive changes in deciduous dental pulp, such acid phosphatase, are increasing in conditions of inflammation. Key words: dental pulp, acid phosphatase.

PP 151 AN IN SITU MODEL fOR STUDyNG ThE EffECT Of fLUORIDE ON A CARIES LIKE ENAMEL LESIONS Authors Jelena C Mandic, Zoran Mandinic Clinic of Preventive and Pediatric Dentistry, School of Dentistry, University of Belgrade, Serbia This crosssover study determined the ability of intra-oral model to demonstrate a fluoride dose response to 0-, 250-, and 1,100ppm fluoride (sodium fluoride) solution with respect to fluoride uptake into, and remineralization of, incipient subsurface enamel lesions. Following a 4 week "lead in" period during which 10 panelists were randomly assigned to use one of the products, enamel specimens with artificial carious lesions were mounted into a specially designed dental appliance worn by each panelist. The measurements were taken at start, after 2 week and after test treatments. Mineral content changes were evaluated by elemental maps and quantitative line scans for calcium, phosphorous and fluoride, using wavelength dispersive spectrometry on a JEOL 8900 Super Probe Microprobe. Fluoride uptake data were significantly different (p<0,01) for all three products with the effect of 1,100 ppm F > 250 ppm F > placebo. The 1,100 ppm F also effected significantly greater remineralization (p<0,01) than did the 250-ppm F or placebo solutions. Relative efficacy of the three fluoride dentifrices tested in this study was similar to that established in a clinical trial, and, therefore, suports the use of this model for in situ studies of the effects of fluoride-containing products on enamel lesions.

PP 150 ACID PhOSPhATASE ACTIVITy Of DECIDUOUS DENTAL PULP IN hEALTh AND PULPITIC CONDITIONS Authors Georgiev Z., Kovacevska I., Dimova C., Zabokova-Bilbilova E., Georgiev K. Faculty of Dentistry, University "St. Cyril and Methodius" - Skopje, Republic Of Macedonia Deciduous dental pulp is the carrier of tooth vitality, and in the children she is very reactive.

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PP 152 APPLICATION Of ThE fISSURE SEALANTS AS PROPhyLACTIC MEASURES AT 7 yEARS ­ OLD SChOOLChILDREN Authors Ivana Antovic, Milos Bozovic, Zoran Mandinic, Mirjam Krmek Health Centre Arilje, Arilje, Serbia Introduction: School dental care presents most appropriate way of application of preventive and prophylactic measures since it includes children of all social ­ economic groups. Also, it is the most suitable time for early diagnostics as well as cure of mouth and teeth diseases. Aim: The aim of this study is to evaluate the impact of fissure sealants on the teeth integrity of the first permanent molars, immediately after they erupt. Methodology: A total of 100 school children 7 years old, were examined for caries occurrence. Scorings were recorded according to the DMF index. In experimental group, fissure sealing of the first permanent molars were done according to the protocol of protocol of fissure sealing. Control checkups were done the following years, sealing was repeated if it was necessary as well as sealing of newly erupted molars. In control group there was no fissure sealing. Results: Caries prevalence at children in control group was much higher (DMF=2,0), Than of those recorded in schoolchildren from experimental group (DMF=1,3) Conclusion: If we take into consideration that in almost 90% cases caries appears on occlusal surfaces, especially on the first permanent molars, we can talk about implication that this simple, painless and cheap prophylactic method represents the most appropriate solution for protection of healthy deep fissures of the first permanent molars.

Purpose: The purpose of the present study was to determine caries prevalence in first permanent molars and its surfaces in school children in Novi Sad (Serbia). Materials and methods: This preliminary cross-sectional study was performed in April 2008 in the elementary school in Novi Sad (Serbia). Survey included 292 school children at age 9, 11 and 13. Data was collected by the children's dentist during regular visits to their school dental practice. Visual and tactile criteria were used. The number of decayed, missing, filled and healthy first permanent molars was calculated, and also surface-specific caries experience of these teeth. The data was statistically processed using x2 test. Results: Among 1168 examined first permanent molars 297 (25.43%) were decayed, 5 (0.43%) were missing, 238 (20.38%) were filled and 628 (53.76%) were healthy. Number of children with all four molars with caries experience was 67 (22.94%). Surface-specific caries experience had shown that occlusal surface was most susceptible (84.4%) to caries. Conclusion: The present study has shown that caries prevalence in first permanent molars is high in researched sample. For more representative results it's necessary to include a larger sample in the study. Then we will be able to propose adequate preventive methods for the oral health improvement.

Poster Presentaions

PP 154 COMPOUND ODONTOMA ASSOCIATED WITh IMPACTED MANDIBULAR CANINE: A CASE REPORT Authors Bahadir Gurbuzer*, Seniz Karacay*, Levent Pikdoken*, Mustafa Tunali*, Zafer Kucukodaci*, Mihri Amasyali** GMMA Center of Dental Sciences, *stanbul and **Ankara, Turkey Introduction: Odontoma is the most common odontogenic tumour, consisting of both epithelial and mesenchymal cells that present a complete dental tissue differentiation. Its etiology is unknown; however, local trauma, infection, and genetic characteristics are suggested as possible factors. Purpose: The aim of this case report is to present the radiographic and microscopic evaluation of a patient with compound odontoma located under the primary mandibular right canine and impacted right mandibular permanent canine located horizontally in the left symphyseal area. Material and method: A 20-year-old male patient referred to our clinic with a complaint of irregularity at his incisors. In the clinical examination it was observed that primary mandibular right canine was present and permanent canine was unerupted. To determine the location of permanent canine, a panoramic radiograph and 3-dimensional tomography were taken. The panoramic radiograph showed multiple radiopaque masses located under the primary mandibular right canine and right mandibular permanent canine was impacted. It was located

PP 153 CARIES PREVALENCE IN fIRST PERMANENT MOLARS IN SChOOL ChILDREN IN NOVI SAD, SERBIA: A PRELIMINARy STUDy Authors Ivana Kantardzic, Larisa Blazic, Aleksandra Tarasenko, Duska Blagojevic, Bojana Zarkovic, Karolina Vukoje University of Novi Sad, Faculty of Medicine, Serbia Clinic of Dentistry and Dental Health Service of Novi Sad, Serbia Introduction: First permanent molars are the teeth with the highest prevalence of caries experience. They are very important for occlusion and masticatory function, so it is necessary to keep them healthy as possible.

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horizontally in the basis of left symphyseal area. The initial diagnosis based on the clinical and radiographic evaluations was a compound odontoma. Surgical removal of the masses and the impacted canine were accomplished under local anesthesia. The removed tooth like structures were sent to the department of pathology and compound type odontoma was also confirmed by histopathological evaluation. Conclusions: Odontoma often causes disturbances in the eruption of teeth such as, impaction or delayed eruption, retention of primary teeth, or abnormalities in the position of the teeth such as tipping or displacement of adjacent teeth.

The aim of this work is to appreciate,that treatment of this patients is not nessary more difficult than with non-handicapped patients. The studied population consisted of 64 patients,diferent age and gender with Cerebral palasy. The study was conucted in Health Centar CACAK and Association of paraplegicsof CACAK.The resultswere statistically analyzed for 2009. year.o In Cerbral palasy,preventive dental care is important.Parental counselling about diet,oral hygiene procedures and the use f flourides should be started early.Manual dexterity is usually poor,but favourable results are often possible with an electric toothbrush ora modified handle to the normal brush.

PP 155 CURRENT GUIDELINES fOR ANTIMICROBIAL ChEMOPROPhyLAXIS IN DENTISTRy Authors Lanara Rodopi, Lazaridis Georgios, Kyriazos Alkis, Antoniades Kostas Aristotle University Of Thessaloniki, Greece Infective endocarditis (IE) constitutes an infection of the cardiac valves or of the endocardium wall from bacteria, fungi and less commonly rickettsia, chlamydia and probably viruses. The possibility of inducing endocarditis after dental therapy should worry the dentist, since IE is a potentially lethal infection and the oral cavity is full of streptococci, staphylococci and gramnegative bacteria. IE constitutes the main reason for antimicrobial chemoprophylaxis in dentistry. However, there is increasing evidence that spontaneous bacteraemia is more likely to cause IE in at-risk-patients than specific episodes of dental treatment. In some cases, maintaining a very good level of oral hygiene can prove more beneficial to at-risk-patients than undertaking any antibiotic chemoprophylaxis. The purpose of this presentation is to present the dental procedures that can cause IE, to define the groups of dental patients that need prophylaxis and to present the proper antibiotic regimens and treatment for these individuals, according to the most recent recommendations of the American Heart Association (AHA)/ American College of Cardiology (ACC), the British Society for Antibiotic Chemoprophylaxis (BSAC) and the British Cardiac Society (BCS). PP 157 DENTAL fLUOROSIS PREVALENCE AND fLUORIDE SUPPLEMENT USE IN SChOOLChILDREN fROM AREAS WITh DIffERENT CONCENTRATION Of fLUORIDE IN DRINKING WATER

Clinic of Preventive and Pediatric Dentistry, School of Dentistry University of Belgrade, Serbia Dental fluorosis is one of the toxic effects caused by intake of an amount of fluoride that is above optimal levels during enamel formation. The aim of this study was to investigate weather fluoride supplement use contribute to fluorosis occurrence in 12-yearold schoolchildren living in four different Serbian regions, i.e. with low (Valjevo and Veliko Gradiste), moderate (Kacarevo) and high (Vranjska Banja) naturally occurring fluoride. Totally, 164 schoolchildren, were participated in our study. The teeth of the schoolchildren were assessed for fluorosis, using Dean's criteria. Fluoride were determined using ion-selective electrode. The dental fluorosis was occurred only in Vranjska Banja region (16.7 %). Fluoride contents in drinking water in these four regions are 0.10, 0.15, 0.79 and 11 ppm, in Valjevo, Veliko Gradiste, Kacarevo and Vranjska Banja, respectively. In comparison to Valjevo and Veliko Gradiste, children from Vranjska Banja consume water from wells with statistically significant difference. Use of fluoride tablets in Veliko Gradiste, Kacarevo and Vranjska Banja was not common, except in Valjevo (53 %). In Vranjska Banja, children use fluoride toothpastes significantly less than in other regions, and in Kacarevo the use of toothpastes was lower than in Valjevo. Regarding the use of mouth rinses there were no statistical differences. Assessment of the effect of fluoride supplements on prevalence of dental fluorosis demonstrated that the major amount of fluoride intake in the region of Vranjska Banja is water with naturally high levels of fluoride, without significant influence of intake of fluoride by dentifrices, mouth rinses and fluoride tablets.

PP 156 DENTAL CARE fOR PATINTS WITh SPECIAL NEEDS IN CACAK 2008 Authors Bozovic Behara Dusica, Biljana Knezevic, Mladen Behara, Sasa Spasojevic Health Cental Cacak, Serbia A patients with special need dental attention and treatmrnt to at least the same standard as non-handicapped patients and frequently a greater predisposition to dental disease.

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Authors Zoran Mandinic, Momir Carevic, Marijana Curcic, Biljana Antonijevic, Jelena Mandic

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PP 158 DESIGN PARAMETERS LIKE A GOOD END ROUNDING fOR SAfE AND EffECTIVE TOOThBRUSh Snezana T. Mojovic, Jelena C. Mandic Dental surgery "Vitadent", Pozarevac, Serbia In the light of plethora of toothbrush choices now available to professionals and their patients, it might be tempting to conclude that all brushes are about the same, and that as long as the patient is a conscientious brusher, it does not really matter what toothbrush is used. However, this is not the case as there are some definite parameters of toothbrush design which can lend themselves to more effective and safer cleaning of the teeth and gums. For example, a "V" profiled brush has been shown to provide better interproximal penetration than flat profiled brushes. Scanning Electron Microskopy (SEM) shows that some brushes have better end rounding than others. In particular, brushes made with conventional stapling technology have poorer end rounding than brushes made with a newer bristle welding technology. Poor end rounding can lead to soft tisue damage/ irritation. When recommending brushes to their patients, they should take these differences into account and recommend a brush that will maximize cleaning in hard to reach places, while at the same time minimizing any soft tissue irritation.

PP 160 GENDER DIffERENCES IN ORAL hEALTh BEhAVIOUR AND GENERAL hEALTh hABITS AMONG fIRST yEAR DENTAL STUDENTS. Authors Kadriye Peker*, Gulcin Bermek*, Omer Uysal** *Department of Dental Public Health, Faculty of Dentistry, Istanbul University, Turkey **Istanbul University, Cerrahpasa Medicine Faculty, Department of Biostatistics, Turkey Purpose: This study aimed to evaluate gender differences in oral health behaviour and general health habits of the dental students at the Dental Faculty of Istanbul University. Material and Method: Self administered questionnaire was distributed among 165 first year dental students. The response rate was 92 %. Chi square test were used for statistical analysis Results: There were no significant differences in using the fluoride mouthrinse, frequency of toothbrushing, and daily sugar consumption related to gender. Male students reported more frequent consumption of sugar ­ containing food between meals than females. Female students were more likely to use dental floss and visit dentist for regular check- ups than males. There were no significant differences in use of alcohol, eating between meals, duration of sleep, regular physical exercise and medical chek-ups related to gender however females had significantly higher rates than males regarding eating breakfast regularly and weight control and males had more tendency for smoking than females. In regard to relationship between oral health behaviour and general health habits related to gender showed that females with high scored general health had a tendency toward decreased sugar consumption while males with high scored general health showed tendency to positive oral health habits such as increased toothbrushing frequency, regular dental check-up and usage of dental floss and mouthrinse. Conclusion: Although dental students performed acceptable general health habits, their oral health behaviour was not satisfying which is indicating great necessity of improving healthy behaviours for dental students.

Poster Presentaions

PP 159 EffECT Of ThREE TOPICAL fLUORIDE SOLUTIONS ON fLUORIDE LEVEL IN PLAQUE Authors Hasic-Brankovic L., Lekic M, Konjhodzic H, Kobaslija S, Korac F Faculty of Dentistry, University of Sarajevo, Bosnia and Herzegovina Recent studies on the caries- prophylactic action of fluoride have indicated that fluorides act entirely locally, via topical action, through saliva, plaque and plaque fluid. The aim of this research is effort to examine process inside plaque after application of three topical fluoride solutions: 1% TiF4, 1% NaF and Aminfluorid solutio. Efficiency of three of these was estimated through concentrations of fluoride ions. Fluoride ions concentrations were measured and demonstrated as potential of fluoride electrode. 60 adult volunteers, divided in three groups (20 volunteers for each group, one agent per one group) have participated in the research. Subjects refrained of oral hygiene for 48 hours before the experiment. Plaque samples were taken before the application of fluoride solutions, and again after 5, 30, 60 and 120 minutes following the treatment. Fluoride concentrations in plaque were not significantly different for three tested solutions

PP 161 INCREASE IN CARIES AS CONSEQUENCE Of ORThODONTIC ANOMALIES Authors Gordana Puletic-Lukic Health Centre "Stari Grad" Belgrade, Serbia Aim: The aim of this study was to monitor increase in caries as consequence of increase in orthodontic anomalies. Methodology: In this study we monitored three groups of children of both sexes, aged 15 years ­ 142 in 1998; - 165 in

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2003 and 165 in 2008. Caries was registered by standard dental examination and then statistically processed with DMF and DMFT parameters. Orthodontic anomalies were determined in collaboration with orthodontist. Results: show and increase in caries with increase of orthodontic anomalies, as follows: ·n1998thepercentageoforthodonticanomalieswas30.3% i and DMFT 2.5; ·n2003thepercentageoforthodonticanomalieswas42.2% i and DMFT 2.8; ·n2008thepercentageoforthodonticanomalieswas47.3% i and DMFT reached the value of 3.0. The most prevalent orthodontic anomaly is crowding of one or both jaws: in 1998 42.2% in 2003 47.3% in 2008 52.1% Conclusion: Difficult socio-economic status, parent disinterest, incorrect nutrition aggravated by orthodontic anomalies and poor dental hygiene have as a result the increase of number of children with caries as consequence.

was found that as the education level got lower, the smoking background and number increased significantly (p=0.001). In direct contradiction as the number of cigarettes increased, the decrease in oral hygiene index (OHI) is found statisticaly significant (p=0.010). Together with the factors concerning the family, lots of enviromental factors play a role in oral and dental health in communities.

PP 163 PROBIOTIC INTERACTIONS WITh ORAL EPIThELIUM Authors Iva Stamatova, Maria Semerdjieva, Kirsti Kari, Stoyan Vladimirov, Jukka H. Meurman Faculty of Dental Medicine, Medical University, Plovdiv, Bulgaria Institute of Dentistry, Helsinki, Finland Introduction: Probiotic species have gained credit in alleviating various disease states. The oral cavity has recently become a promising target for probiotic applications. However, there are yet no studies addressing the probiotic-oral epithelium interactions. Aim: The study aimed at evaluating the effect of probiotic species on cytokine production by oral epithelial cells in vitro. Material and Methods: Four probiotic species and L. bulgaricus LB were grown in MRS broth to reach stationary phase. Bacteria were harvested and resuspended in Keratinocyte Growth Medium 2 (KGM2). Heat killed and live bacterial cell suspensions were used. Immortalized oral epithelial cell line was grown in 24-well plates at 37°C in 5% CO2. After reaching approximately 85% confluence monolayers were washed with PBS and bacterial cell suspensions at concentration 106 and 109 CFU/ml were added and incubated for 6h and 24h. Aggregatibacter actinomycetemcomitans was used as positive control. Supernatants were collected and IL-8 and TNF-α were measured by ELISA. Results: A time-dependent increase in interleukin levels was observed. IL-8 concentrations were significantly higher when 109 CFU ml-1 were added irrespective whether heat killed or live bacteria were used (p<0.05). L. reuteri SD 2112 produced 3-fold higher levels of IL-8 than the positive control. Only L. reuteri SD 2112 caused an increase in TNF-α, whereas the other probiotic lactobacilli did not induce detectable levels of the cytokine in culture supernatants. Conclusion: Probiotic species vary in their ability to induce pro-inflammatory cytokines. Only strains with low cytokine-inductive properties may favor further oral cavity applications.

PP 162 ORAL AND DENTAL hEALTh AND ThEIR RELATIONShIP WITh SMOKING AND BLOOD GROUP ACCORDING TO WORLD hEALTh ORGANIZATION ORAL hyGIENE INDEX AND hALLITOSIS INDEX Authors Dr. O. Sari, Dr. C. Ertugrul, Dr. E. Sahinkaya. Dr. T. Ertan, Dr. S. Gorgulu,

Gulhane Military Medical Academy (GATA) Ankara, Turkey Smoking; Among the preliminary factors for periodontal diseases, it's shown as the major factor. It's displayed that young males at the age of between 20-30 are the ones who don't take dental health into consideration mostly. In our study we aimed to observe the effect of smoking which is an alterable factor and blood group which is a nonalterable factor on oral and dental health. Involved patients were young males among the same age group and different socio-demographic characteristics. Forms including patients' socio-demographic characteristics (age, height, weight, educational background, smoking habits, teeth brushing habits, blood group), presence of hallitosis, and debris and calculus estimates according to the criteria put out by WHO for oral health profile gained at the end of the examinations were filled. Body mass indexes (BMI) of the patiens were computed according to their height and weight and grouped. Hallitosis, debris and calculus indexes and oral hygiene indexes were calculated with the datas reached. They were analyzed in the SPPS mean. According to the statistical evaluations the mean of the ages' of the 363 participants'. According to blood group A Rh (+) was the most common one among the participants. When smoking habit and education level were taken into consideration, it

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PP 164 RESULTS Of SChOOL - BASED DENTAL PROGRAM: A LONGITUDINAL STUDy Authors Svetlana Spasojevic DZ Stari Grad (Belgrade) Serbia The preventive dental care program has been carried out since 1988. in the Primary School "Vuk Karadzic" in Belgrade.This program consisted of the education dental health, individual motivation, regular fluoride prophylaxis and fissure sealing permanent molars and premolars. The aim of this study was to present the results of the preventive dental care program on caries prevalence in schoolchildren between 1988-2007. Caries distribution among 940 children in 1988. and 582 in 2007. was recorded during dental examination in order to obtain number of children with all healthy teeth and mean caries values (DMFT) for every age group. Analysis of obtained data showed significant differences in caries experience during observed period DMFT score 12 years old in 1988. and 2007. was 4.79 and 1.01 respectively, with trend towards incrising number of children with all healthy teeth (from 8.34% to 66.24% respectively).Higer number of sound teeth per single child was observed as well. It can be concluded that after systematic preventive measures conducted within the school dental care, improvement in caries reduction from 1988. until 2007. was evident. Organised preventive dental care in Primary School is giving good results in prevention of oral as well general health of the whole population.

Results: No significant difference in quality and quantity of saliva between two study groups was observed under the terms of the study. A gender-related preference in cigarette brand was registered that did not significantly affect saliva parameters. Conclusion: The lack of significant changes in quantity and quality of saliva in smokers compared to nonsmokers can be attributed to the young age of the participants of the study and their good oral hygiene habits.

PP 166 ThE ADVANTAGES If USING INDIVIDUAL SPLINT AfTER fIXED ORThODONTIC TREATMENT Authors Kovacevska Gordana, Zuzelova Marija, Vankovski Vlado; PHO University Dental Clinical Centre, Macedonia The aim of this study is to demonstrate you the results of using individually made splints with different thickness (1, 2 and 3 mm), after fixed orthodontic treatment in everyday clinical practice. In these clinical cases we present you the possible therapy and prediction of after treatment of fixed orthodontics with different thickness individual splints, in aspect of mobility of teeth and unsuccessful orthodontic therapy. The choosing of thickness of the splint was decided by the patient�s age, the type of orthodontic therapy and planned control period for teeth stabilisation. We gave instructions to the patient of using and maintaining the hygiene of the splints. The design of the splints is simple and with accurate using and oral hygiene they are durable (one to three years).

Poster Presentaions

PP 165 SMOKING hABITS AND SALIVARy fLOW IN hEALThy VOLUNTEERS Authors Iva Stamatova, Vesela Stefanova Faculty of Dental Medicine, Medical University, Plovdiv, Bulgaria Introduction: Tobacco smoking interferes with the normal function of various systems and organs in the human body and is considered among major causative factors for periodontal disease. Aim: The aim of the present study was to evaluate the effect of tobacco smoking on salivary secretion in a group of healthy dental students. Quality and quantity of unstimulated saliva were compared between smokers and non-smokers and the effect of cigarette brands were also assessed. Material and Methods: Subjects of the study were 124 healthy dental students at the age of 22-25. The saliva of each subject was collected under resting condition in the morning and participants were asked not to smoke, eat, drink or use any oral hygiene means 1h prior to saliva collection. The volume of saliva collected after five consecutive intervals (1 min each) was measured in ml and pH defined. PP 167 ThE ANALySIS Of ELEMENTS IN hARD TEETh TISSUESENAMEL AND DENTIN Authors Kemal Sahmanovic Dental polyclinic,Clinical Center of Montenegro The aim of these study was to gain the data on qualitative and quantitative distribution of elements in hard tooth tissues of a tooth crown;quantitative and qualitative make up of macro and microelements in healthy enamel and enamel with cavities,as well as healthy dentin and dentin with cavities. The hard tooth tissues of tooth crown were analysed,healthy enamel as well as both the healthy dentin and dentin with cavities.The samples were separated from extracted theet of patients who were 10-20 years old.The following elements were determined from the samples: F, Ca, P, Co, Cu. Analysis was performed by the ion selective electrode. Results obtained show that the enamel contains he smallest quantities of fluorides(83 ppm),healthy dentin medium ones(100

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ppm) and the denin with cavities largest(120 ppm).In samples of dentin,both healthy and with cavities,the quantity of Ca is 36,30%.Samples of enamel with cavities contained P 18,82%,in relation to healthy enamel which contained 17,46%.Quantities of Co and Cu are lower in all the samples of supstances with cavities of hard tooth tissues of a tooth crown. Conclusion is that the enamel is the first tissue mineralised and the mineralisation lasts short,while the dentin even after it`s development is still getting the fluorides through the pulp. The results show that the relation of macro-micro elements is lower in the samples of dentin, which points to a disturbance of metabolism in analysed elements.

PP 169 ThE USE Of MOUThGUARDS DURING AThLETIC ACTIVITIES Authors Lazaridis Georgios, Lanara Rodopi, Kyriazos Alkis Aristotle University Of Thessaloniki, Greece Most of the mouth and teeth injuries happen during some kind of sports activity. An effective mean of prevention, concerning the teeth and their surrounding structures, is the protective mouthguard. The purpose of the presentation is to describe the characteristics, the types, the materials, the techniques and the care of mouthguards. They are three types of mouthguards: Type I: stock mouthguards, which are inexpensive and ready to wear, but they often don't fit very well. Type II: boil and bite mouthguards, which should be softened in hot water and then inserted in the mouth. By biting on the softened material, it takes the shape of the patient's teeth, offer a better fit than stock mouthguards. Type III: custom mouthguards, which are made by a dentist for each patient personally, based on an impression of his teeth taken by the dentist. As they are customized they can offer a better fit, feel and protection than the other types but they are more expensive. Moreover there are also bimaxillary mouthguards, which are placed on both jaws. There are various methods of fabrication. The most common materials are polyvinyl chloride (PVC), elastic polymers and often polyvinyl acetate ­ polyethylene (PVA-PE). The role of the dentist is to provide information and explain the possibility of injury the athletes and how these injuries can be prevented by using the mouthguard. Finally, the doctor must be able to fabricate and apply mouthguards.

PP 168 ThE RELATION Of CARIES AND PERIONDONTAL PROBLEMS WITh EDUCATION LEVEL AND BODy MASS INDEX (BMI) Authors Dr. T. Ertan, Dr. C. Ertugrul, Dr. O. Sari, Dr. S. Gorgulu, Dr. E. Sahinkaya Gulhane Military Medical Academy (GATA), Turkey Previous studies emphasized that education level of individuals play more important role on caries incidance than economic situation. Moreover wide range of food products that are cariogenic paves the way for such problems. In our study DMF-T indexes of individuals with same age, same sex and different sociocultural characteristics were computed and the relationship between the results with the education level and body mass index was observed. Young males in the same age group in a military unit were involved in this study. Patient Follow-up Forms, including patients demographic characteristics (age, height, weight, education level) and number of caries, missed and filled teeth to compute DMF-T indexes were filled. Body mass indexes (BMI) of patients were computed according to their height and weight. The Data were analyzed using SPSS 15.0 Windows packet programme. All patients were male and the mean of their age was 22.23±2.03 (21-31 age). When their education level was taken into consideration, the largest group was high school graduates with a percantage of 52.6% (n=164) while as to BMI 62.8% (n=196) of the patients were in normal weight category and 32.1% (n=100) of them were overweight and obes. When calculated DMF-T indexes and education levels were observed statistically significant decrease in indexes was detected as the education level increases (p=0.003). Education and nutrion habits play an important role in periodontal diseases, and the education of the community is the first step in the prophylactic measures. Education in the military units will help them have healthier oral structure and after the conscription they will be able to pass on these informations to their families.

PP 170 UTILIZATION Of PREVENTIVE DENTAL MEASURES Authors Milena Gajic-Stevanovic, Nevenka Teodorovic, Ana Vuksa Institute of Public Health of Serbia, Faculty of Stomatology, Belgrade, Serbia Objective: This study aims to assess the utilization of preventive dental measures in Serbia and to analyse changes in utilization over the period from 2003 to 2006. Methods: The Retrospective analytical study of official Public Health Institute data and Republican Statistical Office data was conducted. The comparative analytical method was used for assesment of preventive dental measures over the period between years 2003. and 2006. Results: In Serbia the scope of preventive dental measures utilization in accordance with current health Law is below projected, with declining tendency over the period from 2003. to 2006. Realization of preventive dental measures as observed by districts show broad spectre of regional discrepancies, with mostly no connection with density od dentists in some district.

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The variation factor depending on preventive measure or age group it is related to, varies from 26,73 up to 90,88 %. Conclusion and recommendation: This study has shown that further work on improvement of preventive dental health measures utilization should be undergone in Serbia. Some follow up study should explore possible relation between utilization of preventive dental health services and characteristics of dentists, as well as characteristics of insures who are omitted by preventive dental measures. Key words: preventive dental care, utilization, dental health

is one of the most promissing devices for dental operations most of all for its accuracy,efficacy and flexibility.The authors are presenting their experience from the use of diode laser in dental patients and in a rich variety of cases mostly concerning the soft tissues of the oral cavity.

PP 173 SCANNING ELECTRON MICROSCOPIC EXAMINATION Of ROOT SURfACE Of hUMAN TEETh AfTER NONSURGICAL TREATMENT Of SEVERE ChRONIC PERIODONTITIS Authors Chr. Popova, K. Kotsilkov

PP 171 ORAL hEALTh BELGRADE Authors Irena Dzeletovic Mutavdzic, Serbia

ATTITUDES

AMONG

PREGNANT

IN

MU, Sofia, Faculty of Dental Medicine, Dept of Periodontology Introduction: A primary goal in the treatment of periodontitis can be defined as thorough removal of bacterial deposits from the surfaces of teeth, and further control of the recolonization of the root surface. This goal is traditionally accomplished by means of hand instruments and ultrasonic scalers. Studies have indicated that root surfaces with calculus and bacterial plaque exposed to oral environment are poor substrates for appropriate healing and formation of new attachment. The conventional treatment of pathologically altered root surfaces has relied on mechanical removal of plaque and calculus. Aim: The aim of the present investigation was to examine the effectiveness of scaling and root planning (SRP) in the removing of calculus and bacterial deposits from root surfaces in patients with severe periodontitis and deep periodontal pockets. Materials and methods: This study involves 21 patients with moderate and severe chronic periodontitis with multi-rooted teeth that have to be removed in the initial therapy due to advanced attachment loss. Patients with history of antibiotic treatment or SRP in the last 6 months were excluded from the study. The teeth were extracted after completion of the supragingival and subgingival full mouth treatment with ultrasonic device at lower power. All the investigated teeth were associated with 5 12mm periodontal pockets and severe bone loss. The extracted teeth were examined for the presence of residual calculus and microorganisms on the instrumented root surfaces. The evaluation of the root surfaces was performed on scanning electron microscope (SEM). Results: A significant amount of residual calculus was detected on the root surfaces of teeth with more then 5mm PD. Persistence of some calculus in exposed to disease furcation area of the investigated patients after ultrasonic instrumentation confirmed that the complete removal of dental deposits from the root surfaces of teeth with advanced destruction and deep pockets is difficult and unpredictable task. The SEM images reveal root surface roughness filled with well-defined colonies of microorganisms. Conclusions: It may be assumed that bacteria and bacterial factors, such as endotoxins may remain on the root surfaces even

Milosevic,

Katarina Vojvodic,

Andreja

Introduction: Oral health is important during pregnancy. In Belgrade, Serbian capital with over 1.574.000 inhabitants there is 11,4% pregnant women. In Institute of Public Health- Belgrade we conduct Telephone Counseling Hello baby for pregnant', and babies' health issues. Aim: Purpose of this paper is to show pregnant attitudes toward oral health. Methods and material: It is social medicine study based on (SpSS) analysis of 240 phone interviewed pregnant users Hello baby Counseling in 2007 year in Belgrade. Interview consists of 4 questions linked oral health Results: Mean pregnant age=29,16. Mean pregnancy month=5,96, 45,8% of pregnant reported dental check up,28,8% reported Oral health problems,14,65 % pregnant were under dentist's therapy and 23,8% were using fluorides. Conclusion:, The pregnant has low awareness of importance of oral health to total health and their baby health. Increasing awareness of importance of oral health is one of the most important part of healthy smiles of Serbian population.

Poster Presentaions

PP 172 EXPERIENCE fROM ThE USE Of DIODE LASER IN ORAL LESIONS. Authors Diana Bojkovska, Stelios Dalampiras Macedonia Modern dental treatment is a combination of effectivity and minimal invasion since todays patients are seeking more than ever painless procedures.Technology invents sophisticated new devices in order to achieve confort for the patient and for the dentist, better timing and less tissue damage. Laser devices are more and more familiar for the plan of new dental practices due to the above mentioned good qualities: painless and secure treatment,control of bleeding and disinfection. Diode laser

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after thorough mechanical debridement of the multirooted teeth and thereby, prevent attachment of connective tissue cells in primary healing. Therefore surgical approach or antibacterial irrigation is indicated for appropriate treatment of such periodontal sites. Key words: chronic periodontitis, mechanical treatment, ultrasonic treatment, SEM of dental root surface

Conclusion: This study demonstrates beneficial effect of irrigated deep periodontal pockets with povidone-iodine using the BOP criterion in nonsurgical periodontal therapy. Key words: chronic periodontitis, subgingival irrigation, povidone-iodine, bleeding on probing, deep periodontal pockets.

PP 174 REDUCTION Of BOP IN ShALLOW AND DEEP PERIODONTAL POCKETS AfTER ADDITIONAL IRRIGATION WITh POVIDONEIODINE IN NONSURGICAL PERIODONTAL TREATMENT Authors K. Kotsilkov, D. Emilov, Chr. Popova MU-Sofia, Faculty of Dental medicine, Department of Periodontology Background: Successful control of destructive periodontal disease requires a comprehensive antimicrobial approach that targets periodontal pathogens in various ecological niches of the oral cavity. Scaling and root planing along with proper oral hygiene, constitute the primary approach to achieve periodontal healing. Subgingival irrigation in the dental office, particularly when antimicrobial agents are used, has been shown to provide site-specific therapy. There are evidences that subgingival irrigation has influence on more than half of subgingival plaque and reach half the depth of deep periodontal pockets. Controlling periodontal pathogens in deep periodontal pockets with antimicrobial agents result in healing of the gingival tissues and bleeding reduction. Bleeding on probing has been accepted as valuable criterion for the activity of the disease or marker of the healing in periodontal sites. Aim: This study was undertaken to evaluate the effectiveness of subgingival irrigation with 10% povidone-iodine solution as an adjunctive treatment to the nonsurgical periodontal therapy of patients with severe chronic periodontitis on bleeding on probing reduction in the periodontal pockets 5mm and 5 mm. Material and Methods: Thirty patients with generalized severe chronic periodontitis with 567 periodontal pockets were included in this split-mouth study. Pockets were divided in two groups: periodontal pockets 5mm and periodontal pockets 5 mm. The mechanical periodontal treatment was performed with ultrasonic device P5 Newtron in four visits. Periodontal measurements used for evaluation of the healing outcomes were HI, BOP, PD and CAL. Subgingival irrigation of the periodontal pockets in the right two quadrants were performed with 10% povidone-iodine solutions. Full month periodontal status evaluation was recorded again on the fifth (last) visit. Statistical analysis was performed with SPSS v15.0. Results: The results from this study show significant reduction in bleeding on probing in both types of periodontal pockets. The irrigated periodontal pockets demonstrate a tendency for higher reduction of BOP.

PP 175 ROOT COVERAGE WITh fREE GINGIVAL GRAfT AND CORONALLy POSITIONED fLAP IN CLASS II MILLER GINGIVAL RECESSIONS (CASE REPORT) Authors Chr. Popova, A. Mlachkova MU, Sofia, Faculty of Dental Medicine, Dept of Periodontology Background: Class II Miller recessions are associated with insufficient volume of attached gingiva or complete lack of gingival tissue apical of the gingival margin. Surgical techniques for root coverage suggest lateral flaps from gingival tissues apical to adjacent teeth or coronal reposition of the attached gingiva apical to involved teeth created by free gingival graft. Two-staged technique offered by Harvey 1965, and outlined by Bernimoulin 1975 is successful and highly predictable in achieving root coverage in the absence of attached gingiva. This is considered as appropriate approach for treating gingival recessions especially in areas with no critical aesthetics despite the fact that there is high morbidity. Materials and Methods: A clinical case of Class II Miller gingival recessions of the mandibular central incisors of a 26 year old patient with orthodontic problems is presented. Root sensitivity, non-adequate plaque control and future orthodontic treatment require creating of attached gingiva. After that root coverage in the areas of recessions may be achieved with coronally positioned flap. There are indications for two-staged procedure for root coverage. The surgical technique was performed as the original two-staged procedure. Results: The results show successful increasing of the gingival tissues after free gingival graft with some reduction of the recessions and almost full root coverage after coronal displacement of gingival tissues three months after grafting. Conclusions: The case demonstrate that Bernimoulin 1975 two-staged technique for root coverage is suitable for treating gingival recessions in absence of attached gingival tissue in areas without high aesthetic requirements. The achieved root coverage after gaining attached gingiva justifies the two surgical procedures. Key words: gingival recessions, root coverage, attached gingival, coronally positioned flap

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PP 176 SCANNING ELECTRON MICROSCOPIC EXAMINATION Of ROOT SURfACE Of hUMAN TEETh AfTER ULTRASONIC INSTRUMENTATION AT LOWER POWER Authors K. Kotsilkov, Chr. Popova MU, Sofia, Faculty of Dental Medicine, Dept of Periodontology Introduction: There is extensive evidence in support of scaling and root planing as an essential and effective element of therapy for inflammatory periodontal diseases. An ultimate goal of periodontal instrumentation is to effectively remove plaque and calculus, root-bound toxins, and contaminated cementum without causing root surface damage. Curettes and ultrasonic scalers are the primary instruments used to achieve these goals. Instrumentation of the root surface, however, often results in formation of rough root surface and presence of smear layer of organic and mineralized debris. Aim: The present study investigate the root surface of extracted molars after instrumentation by manual and lower power ultrasonic approach.

PP 177 A BENIGN LESION Of ThE ORAL MUCOSA: GRANULOMA GRAVIDARUM: A CASE REPORT Authors Havva Seda Eroglu, Fatma Boke Ankara University, Faculty Of Dentistry, Department Of Periodontology, Turkey Granuloma gravidarum (pregnancy tumor) is a pyogenic granuloma which develops on the gingiva during pregnancy. This rapidly growing lesion is typically a painless sessile or pedunculated gum mass, of varied diameter. Spontaneous hemorrage or bleeding following brushing observed in cases. Surgical excision of the lesion is indicated to alleviate any bleeding, discomfort, cosmetic distress and diagnostic uncertainty. Case: A 22-year-old woman was examined at the Ankara University, Faculty of Dentistry, Department of Periodontology, presenting a polypoid sessile gingival mass with intense reddish color and bleeding on touch. This mass involved both buccal and lingual regions of the mandibular canin and lateral on the right side at the mucogingival line, and there was bacterial plaque and calculus present. The woman gave a birth two months ago. The lesion was appeared in the third month of her pregnancy. During her pregnancy lesion get larger in size. One week before the surgical excision of the lesion, basic periodontal treatment was performed to decrease gingival inflamation. The histopathological examination of the lesion was also showed that it was a pyogenic granuloma.

Poster Presentaions

Materials and methods: The study comprised 25 multi-rooted human teeth removed for periodontal reasons in the Dept of Periodontology, Sofia. The teeth were divided into two groups: group I (control: 10 teeth scaled and planed with Gracey curettes), group II (15 teeth instrumented with ultrasonic device at lower power). In addition to Scanning Electron Microscopy (SEM) images, Energy Dispersive Spectroscopy (EDS) spectra were collected on each sample to examine the elements present on the tooth surface. Results: The SEM images in this study confirm the effectiveness of manual and ultrasonic approach in the removing of dental calculus from root surface. The SEM images of the instrumented root surfaces depicted that both methods produce some roughness on the root cement. The root dentin was discovered in some areas and dentin tubules were open in both kind of instrumentation. There were no significant differences in the EDS spectra of investigated root surfaces. Conclusions: The results of this in vitro SEM study show that ultrasonic lower power instrumentation seems to be alike to the instrumentation with Gracey curettes considering the removal of dental calculus, but curettes and ultrasonic inserts cause roughness on the root surface that may be retentive for the biofilm accumulation after scaling and root planning. In vivo studies are needed to establish the safety and benefit of ultrasonic instrumentation on lower power in the treatment of periodontitis. Key words: scaling and root planning, instrumentation, SEM, dental root surface ultrasonic

PP 178 A COMLEX TREATMENT Of A GENERALIZED PARODONTITIS (ADVANCED PhASE).A CLINICAL CASE Authors D. Shopova, M. Drangov, K. Markova Faculty of Dental Medicine, Medical University ­ Plovdiv, Bulgaria Preface: There are different general and local factors which influence parodontal diseases. They need a long and steady treatment with a good compliance of the patient. If the treatment is not in time a lot of teeth will be lost as in the case described below. Purpose: The purpose of that summary is to present a clinical case of Parodontitis adultorum (an advanced form) and a complex treatment of that disease. Materials and methods: Patient X.Y., 50 years old. After the preliminary examination we found defects in the upper and lower dental arches, longer clinical crowns, horizontal and vertical tooth mobility, a resorption of the alveolar bone, flared teeth and a reduced lower third of the face. We take a decision for an immediate prosthetic restoration with subtotal prostheses. Treatment stages consist endodontic

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therapy, surgical and prosthetic preparation in order to restore the normal articulacion relationships and the occlusal height. The surgical treatment was accomplished in three stages because of the large number of teeth demanding extractions ­ 18. With perment prostheses with special anchorage elements was delayed for 6 months the restoration for finishing the acute resorptive process. This will ensure a better precision and a longer usage of the construction. Result: The treatment recovered the esthetic and the psychological health of the patient, the normal masticatory function and the speech. Conclusion: The satisfactory final result proved a compulsory need of a collaboration between a protesist and a surgeon. Key words: Parodontitis adultorum, immediate prosthetic restoration.

PP 180 ASSESSMENT Of SOME MARKERS Of EXTRACELLULAR MATRIX IMBALANCE IN IDIOPAThIC GINGIVAL hyPERTROPhy ­ AN IMMUNOhISTOChEMICAL STUDy Authors Monica Banita, Mihaela Tuculina, Camelia Stanciulescu, Catalina Pisoschi. University of Medicine and Pharmacy, P. Rares No. 2, 200349, Craiova, Romania Gingival hypertrophy occurs in various conditions: as a response to administration of some drugs in different systemic diseases, as a consequence of a genetic predisposition or could be idiopathic, the last being less studied. Irrespective of the etiological factor involved, gingival extracellular matrix is highly disturbed. Fibrotic mucosas clinically diagnosed with idiopathic hypertrophy were included in paraffin and performed for usual histological stains and immunohistochemical techniques for vimentin, MMP-3 and TIMP-2. Assessment of histological changes revealed an increase in thickness of the epithelium, with acanthosis and acantolysis and massive deposition of connective tissue in the lamina propria. Keratinocytes from areas with akantolysis expressed MMP-3. In the fibrotic areas we've noted few fibroblasts and a discrete expression of MMP-3. Extended areas of inflammatory tissue with numerous de novo capillaries were observed among the bundles of fibrosis. Inflammatory and endothelial cells expressed both MMP-3 and TIMP-2. The last antibody had an intense positive reaction deeper in the epithelium. Expression of MMP-3 and TIMP-2 denotes that the interaction between keratinocytes, fibroblasts and proinflammatory cells could promote gingival hypertrophy. MMP-3 and TIMP-2 could be involved in epithelial turnover and angiogenesis in the "milieu" of these specific changes besides the control of collagen homeostasis.

Authors Bengisu Gergin, Hamit Bostanci. Ankara University, Faculty of Dentistry, Department of Periodontology, Turkey Aggressive periodontitis is characterized by the rapid loss of attachment and bone loss occuring in an otherwise clinically healthy patient with the amount of microbial deposits inconsistent with disease severity and familial aggregation of diseased individuals. Aggressive periodontitis generally affects systemically healthy individuals less than 30 years old, although patients may be older. Aggressive periodontitis may be universally distinguished from chronic periodontitis by the age of onset, the rapid rate of disease progression, the nature and composition of the associated subgingival microflora, alterations in host's immune response, and a familial aggregation of diseased individuals. Prognosis is no more considered as poor for patients with aggressive periodontitis. A treatment plan can be tried with varying results: Extraction of involved teeth, especially with active periodontal destruction is a spesific approach for aggressive periodontitis that distinguishes the treatment procedure from chronic periodontitis. Standart periodontal therapy including scaling, root planing, curettage, flap surgery with/without bone grafts, root amputation, hemisection occlusal adjustment and strict plaque control can be tried. Succesful results can be expected by using antibiotics as adjuncts to standart therapy. Systemic antibiotics and chlorhexidine rinses should be given in conjunction with local mechanical therapy. In this study; active destruction periods, treatment procedure and oral rehebilitation of an adult male patient who was diagnosed of aggressive periodontitis is represented with radiografic findings.

PP 181 ASSOCIATION Of IL-10 GENE POLyMORPhISMS WITh ChRONIC PERIODONTITIS IN MACEDONIANS Authors Aneta Atanasovska-Stojanovska*, Dejan Trajkov**, Mirjana Popovska*, Mirko Spiroski** *Dental Clinical Center, Department of Oral Pathology and Periodontology, **Faculty of Stomatology, University \"Ss. Kiril and Metodij\", Skopje, Republic of Macedonia There is strong evidence that genetic as well as environmental factors affect the development of periodontitis. IL-10 is an antiinflammatory cytokine, which may modulate disease expression in chronic inflammatory periodontal disease. Three dimorphic polymorphisms within IL-10 gene promoter have recently been identified and appear to influence regulation of its expression.

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PP 179 AGGRESSIVE PERIODONTITIS: A CASE REPORT

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The aim of this study was to evaluate three polymorphisms of IL-10 gene at position -1082 G-A, -819 C-A, and -590 C-A in patient with generalized chronic periodontitis in comparison with periodontitis free patients. Material and method: The sample consists of 301 healthy unrelated individuals, and 132 patients with periodontitis. All individuals were of Macedonian origin and nationality. DNA was isolated from peripheral blood leukocytes by the phenolchlorophorm extraction method. Cytokine genotyping was performed by PCR-SSP (Heidelberg kit). The population genetics analysis package (PyPop) was used for analysis of the cytokine data for this report. Crude odds ratios (OR), as estimates of the relative risk, were calculated with 95% confidence interval (CI). Result: It was found significant protective association between the Macedonian patients with periodontitis and: cytokine genotypes IL-10 -1082/ A:G p<0.004 OR 0.52 (0.33-0.81) IL-10590/ A:A p<0.04 OR 0.36 (0.12-1.06), cytokine haplo type zygotes IL-10 /ATA:GCC p<0.01, OR 0.49 (0.27-0.86). Risk association was found with cytokine genotypes IL-10-1082 /G:G p<0.01 OR 2.59 (1.25-5.39), cytokine haplo types IL-10 /ATC p<0.02 OR 6.87 (1.32-35.65) and cytokine haplo type zygotes IL-10/ ACC:ATA p<0.01 OR 2.39 (1.15-4.97), GCC:ACA p<0.02 OR 4.65 (0.95-25.02), GCC:GCC p<0.01 OR 2.59 (1.18-5.71), which are statistically significant more prevalent in periodontitis patients. Conclusion: Specific haplo types and SNPs in IL-10 gene are associated with susceptibility to chronic periodontitis

socket will be formed in about 1 to 2 months. In this case report, following space disclosured by orthodontic treatment, the radiographic and clinic evidences of the autotransplanted right maxillary laterale is presented.

PP 183 CLINICAL OUTCOMES BETWEEN ORThODONTICS TREATMENTS TO ADULTS AND PERIODONTIC DISEASE Authors Catalina Elena Danila, Ioana Rudnic, Silvia Martu "Gr.T.Popa" University of Medicine and Pharmacy, Iasi, Romania Aim: There is a wide range of indications for orthodontic tooth movements aimed at improving the prognosis of malpositioned teeth in the mixed dentition and of teeth affected with periodontal disease. New regenerative periodontal treatment procedures (membrane technique, application of enamel matrix derivates) have provided greater opportunities for gaining new attachment and have improved the preorthodontic conditions for moving teeth into infrabony defects or for vertical movements of teeth with reduced bone support. Material and Method: We studied 26 patients with age between 26-35 years old, with extracted 3.6 and 4.6 from different reasons and second molar rotated and mesialized. Periodontal clinical exam revealed thin gingival tissue of 3-4 mm (21 cases,80,7%) on the mesial surface of the second molar. The treatment for the second molar consisted in fixed orthodontic devices and different uprighting techniques depending on the periodontal status of the patient. Radiographic exam revealed the enlargement of the periodontal space and the resorbtion of the interproximal mesial bone. Results and conclusions: After treatment it was noticed an improving of the gingival tissue status, the reduction of the periodontal pockets with 2 mm and the reshaping of the bone.The benefits and problems of a combined periodontal/ orthodontic treatment approach are discussed with respect to preorthodontic mucosal grafting, guided tissue regeneration, loss of interdental gingiva, correction of crowding, reorienting of migrated and flared incisors, and gaining new abutment teeth by distalizing free-end premolars. Keywords: adult orthodontics, GTR technique, crowding, molar uprighting, pathologic tooth migration, premolar distalization.

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PP 182 AUTOTRANSPLANTATION Of MAXILLARy LATERALE TOOTh IN ThE PATIENT WITh ORThODONTIC TREATMENT: A CASE REPORT Authors PhD. Zeynep Eroglu*; PhD. DDS. M. Nejat Arpak*; PhD. Burcu Oktay** Ankara Univercity, Faculty of dentistry: *Department of periodontology and **Department of orthodontics, Turkey Autotransplantation of teeth offers a unique treatment option, particularly when combined with orthodontic therapy. This technique may be used to move a complicated orthodontic situation to a location in the dental arches where treatment is easier to perform. One prerequisite for the use of this method is a thorough knowledge of the prognosis. Thus, the stage of root development in the transplant is of great importance. The most crucial factors for the survival of transplants and their continued development are 3/4 to 4/4 root development in the transplant, wide open apices, and a careful surgical technique that preserves the periodontal ligament and the marginal gingiva. The recipient alveolar bone area must be cut 1 to 2 mm larger and deeper than the measurements of the donor root to preserve the periodontal ligament. The transplant is fixed, with a silk ligature crossing the occlusal surface from the facial to the lingual fixed gingiva, for about 1 week. The periodontal ligament will induce new bone formation, and a new alveolar

PP 184 COMBINEDTREATMENT Of LOCAL jUVENILE PERIODONTITIS ­ CASE REVIEW Authors Marijana Santrac, Jasmina Ilijevic. Private dental practice, Serbia

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Female patient, 27, complained of bad breath and alteration in front teeth position. Diagnosis was reached based on the clinical and radiographic findings, such as: Bleeding on probing Loss of the attachments Deep infrabony loss in regio 26, 12-22 and 33-42 Distolabial migration of the upper incisors with diastema formation

power-driven motor instruments, ultrasonic scaler alone and combined with ultrasonic scaler inserts and motor. Repeated measures analysis of variance were used to analyze time effects from different treatments. Results: At 6 months of evaluation, all groups in scaling and root planning treatment produced an improvement in clinical parameters measured, compared with baseline. No statistical differences (p <40.05) were observed in the indices measured in periodontal sites of the four study groups, either for treatment. Conclusions: Under our experimental conditions, this trial shows that mechanized root planning instruments with the engine as efficiently as usual procedures (hand and sonic instruments), is a satisfactory and alternative means of nonsurgical root therapy.

Based on the cast analysis, it was concluded that the patient's state was Class I malocclusion, with lingual position of right upper caninus and midline diastema with protrusion of upper central incisors. Goals: - To stop further destruction of the bone and connective tissue - To provide opportunity for regeneration and healing process - To make a fitting occlusal relationship - To reduce midline diastema, retrusion of central upper incisors and correction of caninus crossbite Methodology and Material: - Scaling and root planning supported by antibiotics - Reconstructive osseous surgery with bone substitute implantation (extraction of teeth 41, 31) - Placement of upper fixed orthodontic appliance (Roth 0, 18) - Fixed restoration of lower incisors Conclusion: Periodontal pocket depth reduction, establishment of favourable occlusal relationship and reduction in residual space were achieved. Consequently, it was made possible for the patient to maintain the achieved results, by proper plaque control.

PP 186 COMPARATIVE STUDy Of hELICOBACTER PyLORI fINDINGS IN DENTAL PLAQUE AND GASTER IN PATIENTS WITh DIAGNOSIS Of GASTRITIS Authors Latkovic M, Brmbolic B, Ranin L. The School of dentistry, University of Belgrade, Serbia Literature data point out to the existence helicobacter pylori (HP) in dental plaque in patients with approved HP in gaster as the cause of gastritis, gastric ulcus and some malignant disease. The aim of this work was to assess the correlation between HP in dental plaque and gaster in gastritis patients.

PP 185 COMPARATIVE CLINICAL RESPONSES RELATED TO ThE USE Of VARIOUS PERIODONTAL INSTRUMENTATION Autors Popa Vanda Raluca, Rudnic Ioana, Martu Silvia. "Gr.T.Popa" University of Medicine and Pharmacy, Iasi, Romania Objective: The aim of this study was to evaluate in vivo effectiveness of scaling and root planning compared to a mechanism of a power-driven and with hand instruments and ultrasonic insert alone with a split mouth design after 3 and 6 months. Methods: Periodontal healing events after initial therapy were investigated in 26 patients with moderately severe-to-adult periodontitis. Plaque index (PLI), bleeding from research (PBI), research pocket depth (PPD), research attachment level (PAL) and the number of moderate and deep pockets (NMP, NDP) were recorded at baseline and 3 and 6 months of treatment. Oral hygiene training was provided for each patient. Randomly assigned quadrants per patient were reduced and root planed with hand instruments (curettes, hoes and files),

The study involved 50 patients with with the symptoms referred to the upper parts of digestive tract and whom endoscopic examination had been indicated for diagnostic purpose. Thirty patients who had not expose complainments to the upper parts of digestive tract were the control samples. In patients indicated for endoscopic examination, just before endoscopic procedure dental plaque was given from the gingival sulcus with probe for ureasa test (Bramio test), as for microbiological identification for HP infection. By endoscopic examination (Fujinon instrument ­ diameter of 12 mm) biopsy was done of antrum and corpus for pathohistological exam as well as ureasa test and for microbiological identification of HP infection. On the basis of the collected and prepared data in all 50 patients with gastritis diagnosis and approved HP infection, the same approvement gave pathohistological findings, ureasa test and microbiological identification. These findings were highly correlated to the findings of Hpin dental plaque (ureasa test and microbiological identification). In 15 patients, 30 days later, upon the therapy for HP, HP infections were absent on the basis of biopsy and dental plaque findings. The presence of Hpin dental plaque is correlated to the presence of HP in gastric mucosa.

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PP 187 CONTEMPORARy SURGICAL TREATMENT Of GINGIVAL RECESSION Authors Jovicic B, Lazic Z, Nedic M, Mirkovic N. Military Medica Academy - VMA ­ Belgrade, Serbia Background/Aim. Gingival recession progression in clinical practice have caused the development of various surgical procedures and technicues to achieve the best esthetic and functional results. The aim of this study was to verify efficacy of surgical procedures that include guided tissue regeneration and connective tissue autotransplants with periosteum. Methods: The study included ten teeth with gingival recession Muller class II and III treated with connective tissue autotransplants with periosteum in combination with coronary guided surgical flap (TVT group). On the contralateral side ten teeth with gingival recession werw treated with colagen resorptive membrane and coronary guided surgical flap (GTR) group.We measured the vertical deepness of recession (VDR), keratinized tissue width (KTW) and and degree of epithelial attachment (DEA) before and six months after mucogingival surgical procedure. Results: The study revealed statistically significant reduction of VDR from 5.15 ± 0,43 mm to 1.61 ± 0.25 mm in the GTR group and reduction from 5.57 ± 0.42 mm to 0.48 ± 0.31 mm in the TVT group (p< 0.01). The degree of DEA before surgical procedure and after six monts showed signifficant widening from 1.43 ± 0.13 mm to 3.45 ± 6.47 mm in the TVT group and widening from 1.46 ± 0.24 mm to 2.13 ± 0.36 mm in the GTR group.The DEA six months after surgical procedure showed more reduction in TVT group for 5.13 mm compared with preoperative values, and in GTR group reduction was 4.08 mm. The difference of reduction was statistically significant (p< 0.01). Conclusion: Current surgical procedures are effective in the regeneration of the gingival recession and achievement of good esthetic results.

There are five different groups of inflammatory periodontal diseases: gingivitis, aggressive periodontitis (AgP), chronic periodontitis (CP), periodontitis as a manifestation of systemic disorders, and necrotising periodontal diseases. Aggressive periodontitis is usually present in younger people, and is frequently associated with genetic predisposition and inadequate immune response to an inflammation. A Case Study: A female patient (30), presented in our Department due to gingival swelling, spontaneous bleeding and pain. A clinical periodontal examination was performed, including plaque index, sulcus bleeding index and measurement of the pockets. In first visit an antiseptic solution Chlorhexidin 0.2% was proscribed, as well as instructions for oral hygiene. The patient was also referred to have further laboratory tests. During the second and third visits, we commenced an initial therapy in two stages: the supragingival and subgingival ones. In the supragingival stage, we removed all deposits and polished the teeth. In the subgingival stage, we deep scaled and performed the root planing procedure. After these visits the patient felt better, and the pain and spontaneous bleeding significantly decreased. A month later, a surgical periodontal procedure was performed. Conclusion: It is necessary to prevent further infection or starting new oral complications. Timely diagnosis, an appropriate therapy and good cooperation with the patient are the key to success.

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PP 189 EDENTULOUS RIDGE AUGMENTATION USING SOfT TISSUE GRAfTS ­ CASE REPORT Authors Zlata Brkic, Smiljka Dukic, Tatjana Djuric Military medical academy, Belgrade, Serbia Ridge augmentation is a valuable plastic surgery method. In the treatment of edentulous ridge, GBR (guided bone regeneration) have recently been of special interest. Soft tissue plastic suregery, however, remains a valuable method to achieve esthetic results. Extreme ridge resorption causes esthetic problems, especially in the maxillary anterior region. Depending on the case, various surgical ridge augmentation procedures may be used.The connective tissue graft is the most valuable clinical method because it is applicable to deformities. Twenty seven old woman has an area of tissue that shoud be recovered. A partial thickness horizontal incision is prepared on the alveolar crest. The recipient site where the connective tissue will be placed is prepared carefully. The full thickness free autogenous gingival graft harvested from the palate are sutured. A periodontal dressing is placed. Four weeks after grafting, a fixed partial denture is placed.

PP 188 DIAGNOSTIC AND ThERAPEUTIC PROTOCOL IN A fEMALE PATIENT WITh AGGRESSIVE PERIODONTITIS - A CASE STUDy Authors Pasic E., Hadzic S., Gojkov-Vukelic M., Hodzic M. Faculty of Dentistry, University of Sarajevo, Bosnia and Herzegovina Periodontal diseases are infections caused by micro-organisms which form colonies on the tooth surface above and under gingival edge. They are most commonly of bacterial etiology and they cause loss of teeth in the terminal stage.

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PP 190 EffECT Of PERIODONTAL TREATMENT IN A PATIENT WITh DESQUAMATIVE GINGIVITIS ASSOCIATED WITh PEMPhIGUS VULGARIS Authors Sivge Akgun, Canan Onder Ankara University, Periodontology Ankara/ Turkey Dentistry Faculty, Department of

Pemfigus vulgaris (PV) is an autoimmune disease characterized by acantholysis in the epithelium.PV frequently begins with oral lesions and progress with the skin lesions. Oral desquamative lesions can be early clinical symptoms of PV. 21 years old male patient presented with 2 month-long history of painful gingiva. PV was diagnosed at dermatology clinic using clinical and histopathological criteria one year ago. Upon the clinic examination the patient was diagnosed as PV related deskuamatif gingivitis. Patient is having systemic corticosteroid administration (deltokortil 5/0, imuran 3×50) but no additional topical corticosteroid used. The patient has received periodontal treatment and oral hygiene instruction. The severity and frequency of deskuamatif lesions has been evaluated on 1st, 2nd, 10th days and 3rd month after periodontal treatment. Oral lesions are early symptoms for 60% of PV patients. The lesions occur most often in the buccal mucosa, palatal mucosa and gingiva. The oral lesions are less frequently observed in gingival tissue. In this case, in spite of the systemic corticosteroid administration there was no recovery in oral condition, the lesions have been increasingly continued. The oral health has been obtained by periodontal treatment and a strict plaque control regime. Consequently, a serious recovery in oral lesions have been determined. In cases with gingival tissue involvement, in order to constitute oral health and control lesions, periodontal treatment and oral hygiene instructions would be an important factor beside systemic steroid administration.

Case Report: A 45-year old man was referred for routine control. During radiographic examinations, fusion and periradicular lesion were detected in the left maxillary lateral incisor. The tooth was tender to percussion and exhibited normal mobility. Vitality tests were negative for the right part of the tooth and positive for the other part. The patient presented a probing depth of 7 mm and bone defect between fused teeth. An endodontic treatment was performed to right part of the tooth. During the treatment procedure, calcium hidroxide used for intracanal dressing. After the endodontic treatment, the patient underwent periodontal surgery. The full-thickness periodontal flap design was made. The granulation tissues were completely eliminated and the bone defect was carefully lavaged with steril saline solution. the defect augmented with beta-TCP graft material and resobable barier membrane. 3 weeks after surgery, endodontic treatment performed to the left part of the tooth because of thermal sensitivity. Ehen the patient returned after 2 mounth the tooth was asymptomatic and radiographic control revealed periapical healing.

Authors Dedic A., Kantardzic A., Cehajic V., Husaric B., Bajrovic N. Faculty of Dentistry, University of Sarajevo; Public Institution \"Medical Center\" Sarajevo, Bosnia and Herzegovina Introduction: Periodontal disease is a disease of multifactorial etiology. It is caused by local etiological factors interacting with systemic and genetic components of the body. Aggressive periodontitis (AgP) is defined based on its primary and secondary characteristics. Progression of the disease, rapid migration of epithelial cells, rapid loss of alveolar bone and the patient's age, are diagnostic and therapeutic priority for a dental practitioner / specialist in regards to AgP. Differential diagnosis between aggressive and chronic periodontitis is based on exclusion of symptomatology of AgP. Sample and methodology: Thirteen patients in total were involved in a several month study. The statistic sample consisted of 188 present teeth, divided into two groups. In one group of patients, the diagnosis of aggressive or chronic periodontitis (AgP or CP) was confirmed, based on periodontal indexes and X-rays. In a specifically created file, all favouring factors were recorded. Frequency of favouring factors due to gender in both groups of participants was examined. Results: Results will be statistically processed in relevant statistical tests, and they will be presented in tables. The results will be discussed with referential authors in this field. Conclusion: There is an increase in incidence of patients with aggressive periodontitis at the Department for Periodontics at the Faculty of Dentistry in Sarajevo. Therefore, an early detection of etiological and favouring factors, as well as elimination and

PP 191 ENDODONTIC AND SURGICAL TREATMENT Of A fUSED TOOTh:CASE REPORT Authors Meskule Sahin, Fatma Boke Ankara University, Faculty of Dentistry/ Department of Endodontics and Periodontology, Turkey Aim: To describe combined endodontic, surgical treatment of a maxillary lateral incisor fused with a supernumerary Introduction: fusion and gemination are irregularities of tooth development. In fusion the originally seperate tooth buds unite at the crown or crown and root levels. Gemination and fusion are generally asymptomatic and do not require treatment. However, there could be poor aesthetics, periodontal destruction or caries leading to pulp necrosis.

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PP 192 fREQUENCy Of fAVOURING fACTORS IN PATIENTS WITh AGGRESSIVE AND ChRONIC PERIODONTITIS

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correction with a particular focus on preventative methods and programmes, are the imperative in the periodontal therapy of aggressive and chronic periodontitis.

PP 193 fREQUENCy Of fURCATION INVOLVEMENTS IN VARIOUS AGE GROUPS. Authors Meltem Karsiyaka, Ebru Olgun Erdemir Kirikkale University, Kirikkale, Turkey Objective: Invasion of the furcation area of the multirooted teeth with periodontal disease is one of the common complications. The aim of the study was to evaluate the prevalence of furcation problems. Material and Methods: In the study, 609 molars were evaluated in 97 patients whose age range 30-75 (45.2±9.73) with nabers probe and radiographs. According to the evaluation, one score was given to each molar. The study consisted of 49 women and 48 men with 33 current smokers and 64 nonsmokers. Results: It was determined that the prevalence and degree of furcation involvement were increasing with age. The frequency of furcation involvement was higher in the mandible than in the maxilla. According to the first and the second molars, furcation involvement of degree I and II was higher on the second molars; furcation involvement of degree III and IV was higher on the first molars. Men had higher frequency of furcation involvement than woman and in smokers; frequency of furcation involvement was higher than non-smokers. Conclusions: In conclusion, the results of this study showed that the prevalence and degree of furcation involvement deteriorated with increasing ages in molars and there were influences of localization of teeth, gender, smoking on the frequency and degree of furcation involvement.

examinations: at baseline, 12 and 60 ± 3 months after GTRtherapy at 6 sites per tooth, Gingival (GI) and Plaque Index (PlI), PD and PAL-V to the nearest 0.5mm Periodontal surgery: GTR therapy was applied in 15 defects for the test group and in other 15 defects GTR was performed using other biomaterial for the control group. Radiographic measurements: Results: Both groups showed a statistically significant PD reduction, PAL-V gainand bony fill 12 and 60 months after surgery, both groups showed a statistically significant PAL-V loss from 12 to 60 months, 60 months after GTR therapy 3 defects in the control group and 1 in the test group had PAL-V loss 3 mm compared to the 12 months re-examination, the study failed to show statistically significant differences between test and control group regarding PD reduction, PAL-V gain, and bony fill 12 and 60 months after surgery. Discussion and Conclusions: there are no statistically significant differences regarding PD reduction, PAL-V gain, and bony fill after GTR therapy.PAL-V gain after GTR therapy in infrabony defects using both bioabsorbable barriers was stable after 5 years in 21 of 26 defects (81%). Key words: bioabsorbable barriers, severe periodontitis, long-term results.

PP 195 hEMI-SECTION Of MOLARS IN UPPER AND LOWER jAWS Authors A. Traykovski, V. Simeonovski, D. Pagovski, M. Aleksandrova Private Health Institution "Dr. Vladimir Simeonovski", Skopje, Macedonia Aim of work: Motivated by a too big number of extracted molars, we put an aim in front of us, to prevent them from premature and too early extraction. Sphere of interest for our exploration were the molars where at least one of the roots was healthy with whatsoever possibility for its treatment in order we may implement the hemi-section procedure with certainty. Mat and Met: The analyses was made over 124 patients with pains within the molar region, during the period 2007-2008 or: 36 i.e. 29,3% were with caries profunda, 32 i.e. 25,8% with periodontal disease, 22 or 17,7% with pulpit, 19 i.e. 15,3% with huge destructions and 15 i.e. 12,1% with periapical lesions on one root. All 124 patients were adequately treated. Our aim group were those 15 patients with objective possibilities to execute hemi-section. Result: After executed treatment over 15 patients, only 5 patients satisfied the conditions for hemi-section. Out of the five, only three were successfully hemi-sectioned, and the two were extracted. The three successful cases are presented at the poster. Conclusion: The need to protect natural teeth should be on the first place. The term " tooth extraction" should be replaced by "hemi-section" whenever half of the molar may be saved. Thus saved molars may be used as support of a bridge or as final teeth of a teeth line. All above stated should be agreed with the patient. Possible complications may be some mild luxation, easily solvable, and in case any resorption modifications appear or fractures, the tooth will be extracted.

Poster Presentaions

PP 194 GTR WITh BIOMATERIALS BARRIERS: LONG-TERM RESULTS Authors Martu Silvia, Rudnic Ioana, Sorina Solomon "Gr.T.Popa" University of Medicine and Pharmacy, Iasi, Romania Objectives: Evaluation of the long-term results after GTR therapy of infrabony defects using 2 different biomaterials barriers after 5 years. Material and Methods: We examineted and treated 15 patients (3 male, 12 female) 22 to 64 years of age with untreated severe periodontitis and 15 pairs of contralateral infrabony defects. Radiographic examination: the measurements were made at baseline, 12 and 60 ± 3 months after GTR-therapy. Clinical

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PP 196 hERPETIC GINGIVOSTOMATITIS IN yOUNG ChILDREN AND ADULTS ­ A COhORT STUDy Authors Rudnic Ioana, Rudnic Erica, Popa Vanda, Danila Catalina, Solomon Sorina, Carausu Mihaela, Martu Silvia "Gr.T.Popa" University of Medicine and Pharmacy, Iasi, Romania Introduction: Since the mid 1990s, herpesviruses have emerged as putative pathogens in various types of periodontal disease. However, it has been difficult to unravel the precise role of various putative pathogens and host responses in the pathogenesis of periodontitis. Aim: This cohort study has purpose to analyze, from clinical and statistic point of view, the infectious diseases with viral ethiology which have also gingivostomatitis symptoms. Material and Method: We studied 68 cases of herpetic gingivostomatitis (infected with HSV 1). All these cases were treated in Infectious Diseases Clinical Hospital of Iasi during the last three years. Clinical oral investigations took place in Infectious Diseases Clinic together with their specialists, and also in our Periodontology Department. We analyzed the emergency and evolution of specific oral manifestation of this type of viral infection. Results and discussions: Oral symptoms of our study group had a polymorphic character, the variety of this pathology justifying the reason of choosing this research topic. 49,8% of the study group presented specific and also non-specific oral manifestations for this viral pathology. The most frequent lesions were the vesicular type associated or not with ulcerations. We found oral lesions of vesicular and ulceration type in 13 cases (9, 0% of total number of studied patients) examined, and in 25 cases (17% of total number of studied patients) only vesicular lesions. Conclusions: We concluded that in this research work cohort there is an increased incidence of these types of viruses with a great polimorfic character. Key words: herpesviruses, young children, gingivostomatitis, other oral manifestations. adults,

inconstent with diseased individuals. Aggressive periodontitis occurs in localized and generalized forms. In general, treatment methods for the aggressive periodontal diseases may be smilar to those used for chronic periodontitis. These methods should include oral hygiene instruction, supra- and subgingival scaling and root planning, periodontal surgery as necessary and periodontal maintenance. The long term outcome may depend upon patient compliance and delivery of periodontal maintenance at appropriate intervals, as determined by the clinician. Case Report: A 29 year-old female patient was referred to the University of Ankara, Faculty of Dentistry, Department of Periodontology for treatment of severe periodontal disease. Her complaints were gingival bleeding, swelling and halitosis. She was diagnosed as aggressive periodontitis based on the clinical and radiological findings. Treatment protocol include, oral hygiene instruction, supra- and subgingival scaling and root planning, periodontal surgery and regenerative treatment some sites. 3 months later, control of disease was accompanished probing depths were reduced. But she didn't show up the other control visits about 2 years. 2 years later when she came, her oral hygiene was very bad, there were severe attachment and bone loss. So we were decided to extraction of many teeth.

PP 198 PAPILLON-LEfEVRE SyNDROME: A CLINICAL REPORT Authors Ozlem Sarac, Sedanur Ustaomer, Esra Baltacioglu, Elif Aydogan, S Melih Ates Karadeniz Technical University, Faculty of Dentistry, Turkey Papillon-Lefevre syndrome (PLS) is an autosomal recessive disorder characterized by palmoplantar hyperkeratosis and severe early onset of periodontitis extending destruction of the surrounding alveolar bone of the teeth, leading to premature loss of both primary and permanent dentitions. The etiopathogenesis of this syndrome suggests that there is a genetic origin for susceptibility to specific virulent pathogens. The clinical forms of PLS have shown some variations. This clinical report describes the periodontal and prosthetic rehabilitation of a 15 year-old girl with PLS who has teeth loss, deep periodontal pockets and excessive tooth mobility. Periodontal management involves full mouth scaling and root planning. Patient was instructed about oral hygiene. Mucoperiosteal flap was reflected in the left maxillary region for debridement of granulation tissue around the teeth and vertical bone defects were filled with bone graft. The therapy was supported by systemic doxycicline and chlorhexidine mouthwash. Due to the young age of the patient, removable partial prosthesis for both jaws was constructed for the prosthetic rehabilitation. Deflex which is a semi flexiable material and has some advantages like light-weight, esthetic and biocompatible, was preferred for the construction of the prosthesis. The patient was satisfied with a better anterior esthetic, phonation and function after the treatment. The clinical controls were performed every 3 months in one year period, and no problem was observed.

PP 197 MAINTENANCE IS A MUST IN TREATMENT Of AGGRESSIVE PERIODONTITIS: A CASE REPORT Authors Fatma Boke, Cem Gurgan University of Ankara, Faculty of Dentistry, Department of Periodontology, Turkey Aggressive periodontitis is charecterized by the rapid loss of attachment and bone loss occuring in an otherwise clinically healthy patient with the amount of microbial deposits

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PP 199 PERIODONTAL STATUS IN SMOKERS AND ThE EffECT Of SMOKING ON NON-SURGICAL PERIODONTAL TREATMENT Authors Meral Gunhan, Murat Bilginer, Ozgun Karakus, Turkey Ankara University, Dentistry Periodontology/TURKEY Faculty, Department of

bone graft was applied to the periodontal defect. The patient was placed in a maintenance recall program every 3 months following the surgical treatment. Results: At the 12th month in the follow-up period, a considerable radiographical bone filling and 7mm clinical attachment gain and a reduction of periodontal depth from 10mm to 3mm were observed. Clinical status and radiographical alveolar bone position were stabile at the 2nd year follow-up. Conclusion: In the regeneration of destructed periodontal tissues, autogenous bone graft applications can show quite successful results, as in this case.

The purpose of this study was to detect the effect of smoking on periodontal tissues and on the non-surgical periodontal therapy. Study was conducted on 100 patients. Patients were divided into two groups. Both test and control groups included 50 patients. PI, GI, BOP, PPD, GCF, ABL, GRL were evaluated at baseline. 15 smokers and 15 nonsmokers who have 4-6 mm probig dept were selected for non-surgical periodontal treatment. Patients were monitored at baseline, 3rd month, 6th month and 12th month intervals. Radiographs were taken by using the standard parallel technique at baseline and 12th month after treatment to detect alveolar bone levels. As a result, clinical parameters were significantly higher in smokers group than non-smokers group. But there were no significant differences between two groups after periodontal treatment at all periods. In conclusion, periodontal disease activity increase with smoking, if patient do not adapt to oral hygiene procedures. On the other hand, there was no side effect of smoking in non-surgically treated patients having proper oral hygiene procedures.

PP 201 RESOLUTION Of ANTERIOR SCLERITIS AfTER PERIODONTAL ThERAPy Authors Guncu G.N., Caglayan F., Caglayan G. Hacettepe University Faculty of Dentistry Department of Periodontology, Ankara, Turkey Scleritis is a chronic inflammation that involves the outermost coat and the skeleton of the eye. In a healthy eye the scleral vessels are not prominet, but in patients with scleritis this vasculature is engorged. Scleritis may be associated with a systemic or immune mediated disease and it might be caused by an infection, trauma or drug reaction. This case presents a patient with periodontitis and anterior diffuse scleritis. A 30-year-old female complained of pain and persistent scleritis in the left eye was referred to periodontology department due to her periodontal problems. She was treated with oral non steroidal anti-inflammatory drugs and topical medications (corticosteroid) for her scleritis during last two years. However, these treatments were failed to control the progression of the disease. After periodontal examination deep periodontal pockets and radiographically serious bone loss was detected. She was treated with flap procedures and also two teeth were extracted. After a healing period, scleritis was resulted in rapid resolution. The ophthalmic complications are usually of inflammatory origin. Some of these complications, like scleritis, may reflect overall disease activity. In this case report treatment of periodontal inflammation help the resolution of ophthalmic complications.

Poster Presentaions

PP 200 PERIODONTAL REGENERATION WITh AUTOGENOUS BONE GRAfT: 2-yEAR fOLLOW-UP Authors Emre Yaprak, Nisa Uygun, Ismet Duran, Renan Endogru Selcuk University, Faculty of Dentistry, Turkey Objectives: Periodontitis is an infective disease characterized by the loss of supporting tissues of the tooth. Bone grafting is one of regenerative techniques to gain destructed tissues as result of periodontal breakdown. In this paper, a successful treatment of a periodontal defect with autogenous bone graft and its 2-year follow-up are presented. Methods: A systemically healthy 55-year-old female patient was referred to Selcuk University, Faculty of Dentistry with the complaint of teeth deficiency. According to the clinical and radiological examination, the patient was diagnosed as chronic periodontitis. In the detailed periodontal examination, approximately10mm periodontal pocket depth and radiographically vertical bone resorption were determined in the distal side of the upper first premolar tooth. Autogenous bone graft application was decided to the involved area. In this respect, autogenous bone graft was taken from around of an embedded and a residual root of right mandibular second molar tooth, after its extraction. After particularizing, autogenous

PP 202 ROUGhNESS EVALUATION AfTER SONIC SCALING Of NANOhyBRID RESIN COMPOSITES Authors Mourouzis P., Koulaouzidou E.A., Vasilliadis L. Aristotle University Of Thessaloniki, Greece

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Sonic scaling is widely used in periodontal prophylaxis to remove plaque, calculus, stains and endotoxins from teeth. The effect of periodontal instrumentation on dental tissues has been tested extensively in previous studies. However, only limited data exist on the effects of sonic scaling on dental restorative materials, which may be exposed to sonic instruments during periodontal procedures. The aim of this study was to evaluate the influence of sonic scaling on the surface roughness of nanohybrid resin composites. The materials tested were: Filtek Supreme XT (3M/ESPE) and Clearfil Majesty Esthetic (Kuraray Medical Inc). Cylindrical shaped specimens (n=20) per each material were prepared, cured, polished and instrumented by sonic scaler under standard conditions by the same operator. The mean surface roughness (Ra, in μm) was recorded using a standard profilometer (Mituoyo, Japan) before and after scaling. Additional specimens were analyzed by scanning electron microscope (SEM), back scattered imaging (BSI) and electron dispersive spectroscopy (EDS). Data were statistically analyzed by analysis of variance (ANOVA) and post hoc tests at level of significance set at p<0.05. The surface roughness of Clearfil Majesty Esthetic was significantly altered after sonic instrumentation while no statistical significant differences were recorded before and after instrumentation of Filtek Supreme XT specimens.

Conclusion: The data analysis revealed that high percent of the pregnant women had periodontal problems and they need appropriate preventive and treatment measures. Key words: pregnancy, periodontal disease

PP 204 ThE EffECT Of STANDARD TOOThPASTE ON ThE PLAQUE INhIBITORy PROPERTy Of MOUThRINSE CONTAINING 0.12% ChLORhEXIDINE GLUCONATE AND 0.15% BENZyDAMIN hyDROChLORUR Authors Meltem Karsiyaka, Ebru Olgun Erdemir, Sevgi Yurt Oncel Kirikkale University, Kirikkale, Turkey Objective: To determine the effect of standard toothpaste on the plaque inhibitory properties of mouthrinse containing 0.12% chlorhexidine gluconate and 0.15% benzydamin hydrochlorur. Material and Methods: The study included four groups, each had eight systemic and periodontally healthy subjects. A:Toothbrushing with toothpaste only B:Toothbrushing with toothpaste followed by a mouthrinse use C:Toothbrushing with toothpaste followed by a water rinse and then a mouthrinse use D:Toothbrushing with toothpaste and waiting 60 minutes before a mouthrinse use. Firstly, all groups brushed only the lingual and palatinal surfaces of their teeth on the first three days of the study. On the 3rd day, all teeth received a plaque index (PI), gingival index (GI) and bleeding on probing (BOP) exams followed by a polishing on the lingual and buccal surfaces of their teeth. On the 7th day, same measurements were scored again. Results: With respect to unbrushed buccal surfaces, group A had significantly higher mean PI, GI and BOP scores than group B, C, D (p<0.05). According to brushed surfaces, the highest plaque score was in group A whereas the lowest plaque score was in group C and D. In group B plaque scores were between group A and C. Group B had significantly higher mean gingival and BOP scores than other three groups (p<0.05). Conclusion: Rinse containing 0.12% chlorhexidine and 0.15% benzydamin HCL may provide an additive anti-plaque benefit beyond toothbrushing with a standard dentrifice. Rinsing with water and waiting 60 min. between toothbrushing and rinsing may enhance therapeutic efficacy.

PP 203 STUDy Of PERIODONTAL STATUS Of PREGNANT WOMEN fROM ThE TOWN Of PLOVDIV AND ThE REGION Authors Mariana Dimitrova, Stanimira Mileva, Svetla Petrova Medical University, Faculty Of Dental Medicine, Department Of Pediatric Dentistry, Plovdiv, Bulgaria The aim of this study was to assess the periodontal status of pregnant women. Material and Methods: The study included 120 pregnant women, living in Plovdiv and it's region, aged from 20 to 40 years. 60 of them were in first half of the pregnancy, and the other 60 women were in the second half. Particular statistical list was created for the investigated contingent. The presence of dental plaque and calculus were evaluated according to OHI-S and CI of Greene-Vermillion. Periodontal examination consisted of bleeding on probing (BOP), probing depth (PD) at four sites per tooth. Ball-ended periodontal probe was used. The presence of gingival recessions or hypertrophy was noted also. Results: The mean OHI-S score was 1,04. High percent of the examined women exhibit presence of calculus (69%), and 50,03% of them exhibit subgingival calculus. The majority of women had bleeding on probing (68,41%), which indicates some kind of gingival inflammation. 54,13% of the subjects had periodontal pocket > 3,5 mm at least at one site. In 9,22% of the pregnant women were observed localized gingival enlargements, and in 10,07% recessions.

PP 205 ThE EVALUATION Of ThE EffECT Of EDUCATIONAL STATUS ON ORAL hEALTh IN yOUNG Authors Sermet Sahin*, Isil Saygun*, Sukru Enhos*, Ayberk Altug*, Ismet Duran**

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*GMMA Centre of Dental Sciences, **Selcuk Un. Fac. of Dentistry Periodontolgy Dep., Turkey Introduction: It is believed that level of education usually correlates with oral health. Purpose: The aim of the study was to evaluate the effect of educational status on oral health in young adults. Material and Methods: For periodontal and dental examination CPITN (Community Periodontal Index of Treatment Needs) and DMFT (Decayed-Missing-Filled Teeth) indices were used respectively. An informed consent was used to asses the socioeconomic and educational status of the subjects. Results: According to CPITN indices 4,6% of subjects were with healthy periodontium, 37,6% of with bleeding on probing, 40,4% of with calculus, 15,6% of with 4-5mm periodontal pocket and 1,8% of with 6mm and over periodontal pocket. While scaling and planning was sufficient in 56% of subjects, 1.8% of them needed complex treatment. The DMFT score was 4,33. There was a correlation among CPITN scores and subjects'(r= -,259, p=0.003) and mothers' educational status (r= -,177, p=0.033) but fathers' educational status (r= -,070, p=0.236) did not correlate. A positive correlation was seen between dental visits and DMFT scores (r=0.267; p=0.005). A negative correlation was seen between using dental floss and DMFT scores (r=-0.209; p=0.029). Conclusion: Subjects' and mothers' educational status has a positive effect on oral health in young adults.

drainage. One week later, all endodontic symptoms considerably relieved except mild residual pain. Then, subsequently formed class II furcation defect on the vestibule side of the tooth was treated with bovine origin extra cellular composite matrix of hydroxyapatite graft and collagen mem brane. Results: Periodontal regeneration was remarkable at the 6th month, completed at 1st year and maintained during three years, radiographically. And also, there were not any endodontic and periodontal symptoms during the whole follow-up period, such as pain, sensitivity to percussion, periodontal pocket, mobility, and suppuration. Conclusion: Multi-disciplinary approach can be effective in the management of the complications of endodontic therapy.

PP 207 TREATING Of LIGhEN PLANUS By CRyOThERAPy Authors Smiljka Dukic, Zlata Brkic, Tatjana Djuric Military medical academy Belgrade, Serbia The application of extremely low temperatures has been known in medicine for more decades as cryotherapy. It is a phisiatric method based on local, deep freezing of pathologicus laesio and its elimination by the process of cryonecrosis. The female patient 45 years old reported white symmetrical oral lesions on the mucuous membrane that were mosaicshaped. After diagnostic process and medication therapy with no results, cryotherapy was applied. The apparatus ERBOKRYO AMOILS 40A which can obtain temperature - 80 degrees Celsius using nitrogen oxidule was used. The cryoguide peak for freezing the tissue was of a circular shape with radius 10mm. Freezing time was 60 seconds. Macroscopic changes were observed and clinically checked in time intervals of 24 hours, 7, 14 and 21 days from the moment of freezing. Since the formation of cryolaesio until its epithelisation the following phases were noticed: the generating of the frozen surface, mild erythema, oedema, bulla,ulceration and epithelisation without cicatrix. On the basis of these changes it can be concluded that cryotherapies can successfully and simply eliminate intraepithelic pathological changes within mucuous membrane of the stoma, such as LICHEN PLANUS.

Poster Presentaions

PP 206 ThE TREATMENT Of A COMBINED ENDODONTICPERIODONTAL LESION WITh fURCATION INVOLVEMENT AfTER ENDODONTIC fLARE-UP: 3-yEAR fOLLOW-UP Authors Emre Yaprak, Hale Ari, Gulsun Yildirim, Mihtikar Gursel Selcuk University, Faculty of Dentistry, Konya, Turkey Aim: This report presents a course of extension of a periapical lesion, and formation of a combined endodontic-periodontal lesion due to flare-up during the endodontic treatment. This report also presents the successful multi-disciplinary treatment of the subsequent combined lesion and its 3-year follow-up. Methods: A systemically healthy 48-year-old-male patient referred with a complaint of pain during nights in his left mandibular first molar tooth which previously had an unsuccessful endodontic treatment, presenting sensitivity to percussion and a lesion around the apexes of the roots. Endodontic retreatment was initiated and concluded after multi visit. One week later, the patient returned with flare-up symptoms and with an extraoral abscess, and was complaining about the severe pain. The extension of the lesion from apexes to the inter-radicular and bifurcation area was seen radiographically. Retreatment and the coronal filling were performed for the second time with oral antibiotic support after

PP 208 TREATMENT Of GINGIVAL LEUKEMIA: A CASE REPORT

OVERGROWTh

DUE

TO

Authors Gamze Zincircioglu, Umut Altay, Cem A. Gurgan Ankara University, Turkey

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PP 209 PREPROThETIC PERIODONTAL SURGERy: A CASE REPORT Authors Mehtap Bilgin*, Research Assistant, Prof. Dr. Murat Akkaya*, PhD. DDs., Hatice Aan**, Research Assistant *Department of Periodontology, Faculty of Dentistry, **Department of Prosthodentic, Faculty of Dentistry, Ankara Universty, Ankara, TURKIYE The gingivectomy is a conventional method of crown lengthening. But this method reduces keratinized gingival tissue. Apically positioned flap is more suitable for prevention keratinized gingival tissue width. The aim was to keep the keratinized gingival tissue width and to eliminate the periodontal pockets. In this case; crown lengthening performed by apically positioned flap surgery. The female patient was 51 years old. Her teeth, with numbers of 11,13, 16,17,26,27,46 were missing. She had fixed prosthetic restoration in maxilla. After the non-surgical periodontal therapy, the apically positioned flap was performed to the teeth with numbers of 12,21,22,23. New prosthetic restoration was applied; after healing of the gingival tissue. As a result, the keratinized gingival tissue width was encouraged and crown lengthening was performed while periodontal pocket was eliminated by apically positioned flap.

PP 211 fOCAL-CEMENTO-OSSOUS DySPLASIA: A CASE REPORT Authors Cahut Ucok, Aysegul Tuzuner, Doygu Yazioglu, Omer Gunhan Ankara University, Turkey Maxillofacial fibroossous lesions can be observed in different parts of the skeleton, except fibrous dysplasia only observed in the maxillofacial region. These lesions are classified as fibrous dysplasia, periapical cemental dysplasia, focal cemento-ossous dysplasia, floride cemento-osseous dysplasia and cementoossifying fibroma.

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Chronic myeloid leukemia (CML) is characterized by abundant myeloid hyperplasia in bone marrow, high leukocyte count comprised of mature myeloid cells in peripheral blood and splenomegali. CML may manifest itself by mucosal petechia and bleeding, acute periodontitis and candida in oral region due to immune system suppression and thrombocytopenia. A 22-years old boy patient admitted to our clinic in 22.01.2009 due to complaints of gingival overgrowth and discoloration. When systemic medical history of the patient was obtained, it was found that patient was still under medication for the treatment of CML and at follow-up period. In clinical and radiologic examination, acute, inflammatory and diffuse alterations covering the free and attached gingiva was observed at right maxillary anterior region, which was also declared by the patient as complain. Overall periodontal status of the patient was diagnosed as generalized chronic marginal gingivitis and there were also pseudo-pockets due to gingival overgrowth. Within the same day, patient was undergone oral hygiene training and scaling and root planing procedures and a mouthwash comprised of 0.12 % chlorhexidine digluconate and 0.15 % benzidamine hydrochloride to be applied twice a day was prescribed. There was a positive improvement in clinical manifestation at post-operative 10 day period. As superior labial frenum was attached to gingival margin, frenectomy operation was performed.

PP 210 TREATMENT Of PARADONTOPAThy BEfORE A fIXED PROTETIC RECONSTRUCTION Author Dr. Darko Cekov Dental Surgery VIVADENT. Macedonia. The aim of this work is to present the course of treating paradontopathy on a patient that requires a fixed protetic reconstruction. It means cleansing tartar, concrements and treatment of the solid and tender walls of the periodontal sockets. The surgical part of the therapy is gingivectomy and gingivoplasty. In our case, we had a 46 years old patient who came to us for a protetic reconstruction. But after the intraoral examination the diagnose was a paradontopathy with prominent hyperplastic gingiva. Therapy: We began the therapy with cleansing tartar, subgingival concrements and cleansing of tender sediments. Removal of necrotic cement. Disinfection and cleaning with 3% H202 and Betadine 1%. Thereafter we performed gingivectomy with reverse angle by sectioning the gingiva at a 45 degrees angle and removal of the pathologically changed tissue. After the completed gingivectomy we performed gingivoplasty. After stitching the wound with single interdental stitches we applied a packing of zink oxide (). The whole procedure was conducted under the impact of the antibiotic therapy Tabl. Rodagil. The patient was given directions for maintaining the oral hygiene on higher level, thus helping the therapy to succeed. After 4 days we removed the packing of (). After 7 days we removed the stitched and the patients was given new instructions for oral hygiene. The picture taken 20 days after the intervention shows a significant recovery of the gingival. The extraction took place on 11. 12. 25. Our presentation through pictures and text shows the success of the intervention on our patient who was more than happy with what we've done for him. The reaction of our patients is our only relevant benchmark for our work and only manner in which we shape the methods of our future work.

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Proceedings of BaSS 2009

Focal cemental dysplasia, being accepted as the most commonly observed fibroossous patholgy, is reported widely among females, who are between the fourth and fifth decades of life. The lesions are frequently asymptomatic and observed in edentulous jaws, extraction sockets and in close proximity to teeth. This case report presents a female patient with focal cementoosseous dysplasia located in the right mandibular molar region.

Asist. Dr., Discipline of Periodontology, Faculty of Dental Medicine, "Gr.T.Popa" University of Medicine and Pharmacy, Iai, Romania 3 Prof. Dr., Discipline of Anesteziology, Faculty of Dental Medicine, "Gr.T.Popa" University of Medicine and Pharmacy, Iai, Romania

2

Aim: Although the long-acting local anesthetics bupivacaine and etidocaine have structural formulae which differ only slightly from those of mepivacaine and lidocaine, respectively, they differ considerably with regard to some physicochemical properties. Materials and methods: The effect of bupivacaine 7.5 mg/ml with epinephrine 51g/ml, etidocaine 15 mg/ml with epinephrine 5, ug/ml, and lidocaine 20 mg/ml with epinephrine 12.5 jig/ml was studied when used for oral infiltration anesthesia. Twenty healthy volunteers took part in the experimental and doubleblind study. One ml of the respective anesthetic solution was deposited supraperiosteally in the apical area of the maxillary right lateral incisor. Onset time, frequency of analgesia, gingival spread, and duration of tooth analgesia were studied and duration of soft-tissue numbness registered. Results: The present investigation showed that lidocaine had a shorter onset time compared with bupivacaine. No difference with regard to frequency was found. Bupivacaine and etidocaine had a longer period of soft-tissue numbness, but a significantly shorter duration of tooth analgesia than lidocaine. Lidocaine had a statistically significant shorter onset time than bupivacaine(p < 0.05).All anesthetic solutions showed high frequency of analgesia. Conclusions: Duration of tooth analgesia was significantly longer for lidocaine compared with bupivacaine and etidocaine. Bupivacaine and etidocaine seem to remain in the injection area and this is also suggested by the finding of the extended period of soft-tissue numbness which was significantly longer than for lidocaine.The conclusion of the present study is that bupivacaine and etidocaine do not fulfill the concept of "longacting" agents with regard to tooth analgesia when used for oral infiltration anesthesia. Key words: bupivacaine, etidocaine, infiltration anesthesia.

PP 212 A RETROSPECTIVE ANALySIS Of fACIAL fRACTURES AETIOLOGIES Authors Rubiev M, Deliverska E. Faculty of Dental medicine, Medical University, Sofia, Bulgaria Purpose: Assesment of mechanism of injury and type and location of the facial injury. Material and Methods: The medical records of 276 patients with 216 facial fractures were retrospectively analyzed. Fracture patterns were classified based on the presence or absence of fractures of the orbit, zygoma, maxilla, mandible and nose. Result: The most common etiology of trauma was assault(42,6%) followed by car accident(23,1%), fall(16.2%), sports(5%), occupational(2), and gunshot wound.(0,9%) The most common fracture type was mandibular fractures(70),followed by nasal bone fracture(66). Car accident was found to be a significant predictor of panfacial fractures or associated injury, as was GSW. Sports injuries were a significant predictor of isolated upper midface fractures, and assault was a significant predictor for isolated mandible and nasal bones fractures. Car accident and GSW each were found to lead to significantly higher severity of injury than assault, fall, and sports. Conclusion: The results confirm intuitive aspects of the etiology of facial fractures that have been anecdotally supported in the past. Key word: etiologies of trauma, mechanism of trauma, facial fracture

Poster Presentaions

PP 214 APICAL INTERVENTION IN CRONIC PERIODONTITIS Authors Dr. Fatmir Lelaj, Prof. Asc. Vergjini Mulo, Dr. Koco Gjilo

PP 213 AN EXPERIMENTAL EVALUATION Of BUPIVACAINE AND ETIDOCAINE fOR ORAL INfILTRATION ANESThESIA ­LOCAL EffICACITy IN ORAL SURGERy Authors Oana Elena Ciurcanu1, Ioana Rudnic2, Maria Voroneanu3

1

Faculty of Medicine, Stomatological Department, University of Tirana, Albania In recent years, the number of patients requiring endodontic treatment has grown substantially. This is due to the conservative tendency to treat root canals, instead of simply extracting the tooth. The objectives of treating root canals are: to decrease the number of microorganisms,to remove necrotic tissue, to close off the canal in order to prevent recontamination. However after the first endodontic

Asist. Dr., Discipline of Anesteziology, Faculty of Dental Medicine, "Gr.T.Popa" University of Medicine and Pharmacy, Iai, Romania

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treatment, an inflammatory immune response may occur inside the periapical tissues. This is due to the persistence of micro-organisms & it may result in the destruction of the local bone. Moreover, the contamination of the periapical tissue from microorganisms & filling materials, may lead to a reaction as if against an antibody. This prevents the healing of the tissue. Studies from different countries have reported that periodontitis apical & other periapical pathologies exceeds 30% of all tooth with a filled root canal. This data suggests the absolute need for the treatment of these pathologies. The apical or dental conditions that require periapical surgery as a method to achieve satisfying results are:Teeth with anatomical problems that renders impossible the direct treatment of the canal, roots filled with strong materials, which makes them impenetrable during the second treatment etj. The objectives of the study were:To present the short & long-term effects that derive from one session treatments on periapical cases in distal teeth, when endodontic intervention is not possible. Material & Method: During a 2 year study, we have proceeded to do 80 interventions, have completed the endodontic treatment & apical rezecsion in the same treatment. The study results have been clinically observed before & after the periapical treatment. We have used X-Rays before the treatment, after the treatment, and after 3-6 months to assure a complete healing of the pathological center.

PP 216 BILATERAL SUPERNUMERARy fOURTh AND fIfTh MOLARS: CASE REPORT Authors Avsever H, Gunduz K, Karacayli U, Gorgulu S, Akin E Gulhane Medical Academy, Ankara, Turkey Although the supernumerary teeth are the one of the most common developmental disorders, distomolar teeth is rare relatively. Depending on their location, supernumerary molars are divided into two types such as distomolars and paramolars. Distomolars are supernumerary teeth that are distal to the third molars, while paramolars are supernumerary teeth on the side of the molars. On this case report we will present radiographic findings and treatment plan of bilateral maxillary distomolars. Keywords: Supernumerary teeth, distomolars.

PP 215 BILATERAL GLANDULAR ODONTOGENIC CyST Of ANTERIOR MAXILLA Authors Nurhan Guler, Assoc. Prof., Sedat Cologlu Prof Yeditepe University, Faculty of Dentistry, Department of Oral and Maxillofacial Surgery, Istanbul, Turkey The glandular odontogenic cyst (GOC) is a recently recognized rare developmental odontogenic cyst showing an aggressive behavior and accounts for 0.012 to 1.3% of all jaw cysts. This cyst is possibly derived from rests of dental lamina and comprises both secretory elements and stratified squamous epithelium. GOC has a wide clinicopathologic spectrum and the provisional diagnosis based on clinical and radiological examinations may vary. Radiologically it has been reported as dentigerous cyst and there are only three reported cases of simultaneous occurrence of GOC with ameloblastoma. GOC can be misdiagnosed because of the overlap of its histological features with other odontogenic cysts, such as botryoid or lateral periodontal cysts or central low-grade mucoepidermoid carcinoma. The bilateral involvement of this cyst is not common and no reported cases in English literature. In this poster presentation, the clinical, radiographic, and histopathologic findings of the bilateral GOC in the anterior maxilla of a 33 female patient will be presented.

Authors Petia Pechalova, Angel Bakardjiev, Elena Poriazova, Zaprian Zaprianov, Bojan Vladimirov, Anastasia Zheleva, Georgi Hadjigeorgiev, Vesselina Goranova-Marinova, Stefan Goranov Medicine University of Plovdiv, Bulgaria A complication of the systemic administration of bisphosphonatetype medications was first reported in the medical literature in 2003 and defined as avascular osteonecrosis of the jaws ­ bisphosphonate-associated osteonecrosis of the jaws (ONJ). A series of four cases with ONJ, three in the mandible and one in the maxilla, is reported. Two of the patients had been diagnosed with prostate cancer and treated with Zometa; one patient with multiple myeloma had received Aredia and Zometa; and the fourth patient had been treated for severe osteoporosis with oral bisphosphonates (Fosamax and Bonviva). All four patients were treated by a conservative surgical approach and standard antibiotic regimens, with no evidence of disease progression during the follow-up period. The present study also reviewed the most current knowledge on the etiopathogenesis, prevention and treatment of bisphosphonate-associated ONJ.

PP 218 ChERUBISMUS - CASE REPORT Authors Prekazi-Loxha M., Sejfija O., Gjinolli F, Salihu S., Z. Agani University of Prishtina, Faculty of Medicine, Dep. of Maxillofacial Surgery, Republic of Kosova

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PP 217 BISPhOSPhONATE-ASSOCIATED OSTEONECROSIS Of ThE jAWS ­ REPORT Of fOUR CASES AND REVIEW Of ThE CURRENT LITERATURE

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There are a small number of pathological findings in jaws with giant cells, and normally they should be diagnosed very easy. But very often we as a surgeon and pathologists have problems in that field. The basic problem is how to differentiate them, because there is a difference in their behavior and also we are treating them in different ways. The presence of multinucleated giant cells in fibro-osseous lesions of the jaws has led to considerable confusion. And the giant cells themselves are of little diagnostic importance. We will present a case, young patient that came in our department first time when she was 8 years (2003) old with cysts in frontal region of maxilla, HP finding in that time was giant cell granuloma. With this kind of diagnosis we have justified the operation in maxilla. Than she came again after 3 years, clinically she had characteristics cherubin face. We where confused with high level of parathormon 77.0 (8-74) and it changed our direction of diagnosis-grey tumor and in the same time alkaline phosphat was 694,5 (100-700). After detailed analyses the function of paratiroid glad was normal and with dynamic scintigrafy we concluded no changes in other bones of the body. Inclose disscusion with the pathologist the case was deeply analised and the final diagnose of HP was Cherubism.

Results: The lesion was removed surgically via an intraoral approach under local anesthesia and the surgical specimen was sent for histopathologic examination. The diagnosis of the lesion was nasolabial cyst. Conclusion: Because nasolabial cyst is a soft tissue lesion, plain radiographs may not show any detectable changes. The investigation could include either computed tomography or magnetic resonance imaging.

PP 220 CySTS Of ThE jAWS ­ A 10-yEARS RETROSPECTIVE STUDy Authors Petia Pechalova, Angel Bakardjiev Medicine University of Plovdiv, Faculty of Dental Medicine, Department of Maxillo-Facial surgery, Department of oral surgery, Plovdiv, Bulgaria Six hundred twenty one cysts of the jaws in 594 patients are examined. The odontogenic cysts are 97,1%±0,67%. The radicular cysts are the most common type of jaw cysts (70%), dentigerous cysts (23,5%) are the most common in the first and the second decades. The residual cysts are 18%. The middle age of patients with jaw cysts is 35,30±0,73 years. Jaw cysts are more frequent in the maxilla in comparison with mandible (t=2,33; Р<0,05). The radicular cysts more frequent involved the alveolar bridge of the upper jaw (84,5%) and the maxillary sinus (83,5%); the mentum (77,5%) and the body of mandible (51,8%). The dentigerous cysts developed more frequent in the lower jaw angle (45,5%), the body (40,1%) and the ramus of the mandible (37,8%).

Poster Presentaions

PP 219 CT AND MR fINDINGS Of A NASOLABIAL CyST: A CASE REPORT Authors A. Pinar Sumer, Peruze Celenk, Mahmut Sumer, N.Tuba Telcioglu, Omer Gunhan Ondokuz Mayis University, Faculty of Dentistry, Samsun, Turkey Introduction: Nasolabial cysts are uncommon primarily soft tissue lesions located adjacent to the alveolar process above the apices of the maxillary incisors. Clinical features of the nasolabial cysts are smooth, fluctuant soft-tissue swelling between the upper lip and nasal aperture with obliteration of the nasolabial fold and elevation of the nasal ala. Purpose: The purpose of the present study was to report a nasolabial cyst case and to describe its features on CT and MRI exams. Material and Methods: A 32 year old woman presented with painless swelling in the left nasal ala area. The extraoral examination revealed a smooth and nontender swelling in the region of the left nasolabial fold. On intraoral examination a swelling in the labial vestibule in the region of the maxillary left central, lateral incisor and canine was visible. Panoramic and periapical radiographs did not show any significant change in the bone. CT showed a well-defined expansive mass with homogenous density, similar to soft tissue, located in the left nose and preservation of bone structures. MR imaging revealed a well-defined soft tissue mass, with homogenous hypointensity on T1-weighted images and hyperintensity on T2-weighted images.

PP 221 DENTAL PATIENT WITh hEPATIC DISEASE: SCREENING, MANAGEMENT, PREVENTION Authors Lazaridis Georgios, Lanara Rodopi, Antoniades Kostas Aristotle University of Thessaloniki, Greece Nowadays, a considerable part of the general population suffers from hepatic diseases, mostly caused by viruses (HBV, HCV etc). These individuals demand special management when it comes to dental treatment. The main complications that may occur is the risk of exceeding hemorrhage, the incapability of metabolizing certain drugs and the high risk of transmission to the dentist, the working stuff and/or to another patient. The aim of this presentation is to describe the evaluation of the laboratory tests and to present the drugs that should be avoided in such cases. Moreover, emphasis is placed on the potential hemorrhagic complications and how these can be managed. There is also a recommendation of infection control strategies. Finally, we present a protocol that the dentist should follow in case of infection.

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PP 222 DySTROPhIC CALCIfICATIONS ARISING IN ThE MASSETER MUSCLE: A CASE REPORT Authors Metin Sencimen, Dincer Yilmaz, Ozkan Ozkaynak, Aydin Gulses, Ozlem Ogretir, Kemal Murat Okcu Department of Oral and Maxillofacial Surgery, Gulhane Medical Academy, Ankara, Turkey Introduction: Dystrophic calcification is a term used to describe the deposition of calcium in abnormal tissue without abnormalities of serum calcium-phosphorous levels. This rare entity is noted most often in damaged or devitalized subcutaneous tissues, secondary to trauma or infection and also is described in systemic lupus eritomatosus, scleroderma, or dermatomyositis. Purpose: This paper briefly highlights the presentation and surgical treatment of a dystrophic calcification in the masseter muscle. Material and method: The case of a 21 years old male with two isolated dystrophic calcifications in the right masseter muscle is presented. Nevertheless, the lesions were found in normal tissue and there was a negative history of trauma. Both lesions were ablated under local anaesthesia via an extraoral approach. Results: The healing period was uneventful. The patient had periodic follow-ups and has remained free of disease for the past 21 months. Conclusion: Injured tissue of any kind has been suggested to predispose dystrophic calcification. We attribute the development of dystrophic calcification in our case to stress in the regions of tendinous insertion of the masseter muscle. Additionally, this unusual formation should be differentiated from lesions in other calcification syndromes.

the radicular cysts and hypertrophy of the upper frenulum were more frequent referral diagnoses in patients coming from the areas around Podgorica. Extractions were performed more frequently in patients from Podgorica, while circumstances with apicectomies and frenulectomies in other patients.

PP 224 EXTRANODAL PERIfERAL NON-hODGKIN B-CELL LyMPhOMA (MALT) LOCATED IN PALATINE. CASE REPORT. Authors Tsirevelou P.1, Papamanthos M., Kolokotronis A., Chlopsidis P.1, Zourou I.2, Galanou M., Skulakis Ch.1 Dental Care and Pathology Department, General Hospital of Volos, Dental Care School, University of Thessaloniki, Greece

1

2

Introduction: Non-Hodgkin lymphoma is the second, most common neoplasm of the oral cavity and it accounts 3,5% of all the neoplasms with this localization. It, also, presents 13% of all primary extranodal non-Hodgkin lymphomas. Most of the patients are in the 6th or 7th decade of their life. MALT type lymphomas are low-grade non-Hodgkin lymphomas. They take their origin from B-cells, of the lympocytic popullation of the mucosal tissue. Although their exactly etiology is unknown, it seems that the chronic and consistent antigenic irritations, have been identified as necessary precursors for the development of MALT lymphoma. As far as the oral cavity is concerned, the most common primary extranodal site of head and neck non-Hodgkin's lymphomas is the tonsil (70% of all cases). Less usuall localizations are the palatine, the gingiva, the oral mucosa, the tonque and the lips. Aim: The aim of this presentation is to describe the diagnostic procedure and the treatment of a patient with MALT lymphoma, located in the palatine. Materials and methods: An 80-year-old male patient presented in our department with a mass, which took up the whole hard palate and expanded to the soft palate too. The lesion appeared since 6 months and was painless, soft, multilobular with ulcerations. The histopathologic examination revealed a MALT lymphoma. Results: After the diagnosis, the patient received 5 cycles chemotherapy with R-CHOP every 21 days and the lesion was completely healed. Conclusion: The early diagnosis of unilateral MALT lymphomas and the right therapeutic treatment can give grate results.

PP 223 EPIDEMIOLOGICAL PROCEDURES

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Authors Dr. Dzenad Ganjola, Oral hirurg Clinical Center of Montenegro, Podgorica, Montenegro The epidemiological study was conducted to assess oral health of patients referred to the Department of Oral Surgery at Clinical Center in Montenegro. The distribution of particular diagnoses and surgical interventions in relation to frequency of occurrence was tested. The total of 1,324 patients aged from 7-77 years, both sexes, were included in the study. All the patients were treated under local anesthesia. The most common reason for referral to oral surgery was chronic periapical lesion (37,4%), followed by retained root (28,02%), impacted tooth (11,55%) and radicular cyst (7,6%). The majority of patients, residents of Podgorica city area, were treated for the diagnosis of adult periodontitis, while

PP 225 fIBROMATOSIS TUBERI MAXILLAE BILL.-A CASE REPORT Authors Andreja Mutavdzic*, Irena Dzeletovic-Milosevic

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*Health Institution of Ministry of Internal Affairs Institute of Public Health, Belgrade, Serbia Gingival fibromatosis is a hyperplasia of the connective tissue of jaw periosteum,with no symptoms of inflammation or pain. Fibrotic gingival enlargements are characterised by pink,firm and massive shape. There are often growing with unkknow etiology,somethimes in a form of secondarily fibrotic inflammatory enlargement. Purpose of this case report is to show the necessisity of surgical procedure in such a cases rehabilitation. The reason is unpossibility of plaining prothesis because of local and intermaxillary dificulties. Both of the speciments are mobille,and are. increased in both lenth (vertical and sagital). This fact jeopardised plaining and maiking prostetic replacement. The patient is a female of 49 years,with the evolution of fibromatosis ten years.-picture Surgical procedure was performed under local anesthesija,the first on the right side,using the inverse V ehcision.-pictures After the removal of specimen, without the need for hemostasis,created defect is directly sutured.-picture The same procedure was performed on the other side.pictures Conclusion: Localised gingival fibromatosis is confined to the molar regions of one or both jaws with a propensity for the palatal gingiva,and extends from the molars to the tuberosity. The fibromatosis tissues contain fibroblasts that have low growth activity,but produce greater amounts of collagen and other extracellular substances compared with normal fibroblasts. Because of these facts,three-dimensional surgery is the method of choice

of fractured transport segment of alveolar distraction in the atrophic anterior maxilla of a 47 years old female patient during implant insertion will be presented.

PP 227 IMPORTANCE Of BIOPSy fOR EARLy DIAGNOSIS Of ORAL LESIONS: A CASE REPORT Of SQUAMOUS CELL CARSINOMA SEEN IN fLOOR Of ThE MOUTh Authors Mustafa Cakir DDS, Hanife Ataoglu DDS Phd Selcuk University Faculty of Dentistry, Selcuklu Konya, Turkey The floor of the mouth is the second most common intraoral location of squamous cell carsinomas, accounting for % 15 to %20 of cases. About 38% of all oral squamous cell carcinomas occur on the lower lip; these are usually solar-related cancers on the external surface. About 11% begin in the palate and tonsillar area. Squamous cell carcinoma of the tonsil (an oropharyngeal cancer), 2nd in frequency only to carcinoma of the larynx among cancers of the upper respiratory tract, occurs predominantly in males. Early, curable lesions are rarely symptomatic; thus, preventing fatal disease requires early detection by screening. Treatment is with surgery, radiation, or both. The overall 5-yr survival rate (all sites and stages combined) is > 50%. 3% of cancers in men and 2% in women are oral squamous cell carcinomas, most of which occur after age 50. Squamous cell carcinoma is the most common oral or pharyngeal cancer (and the most common at head and neck sites in general) In this case report, squamous cell carsinoma seen in floor of the mouth of 65 years old man and its treatment will be presented.

Poster Presentaions

PP 226 fRACTURE Of TRANSPORT SEGMENT Of ALVEOLAR DISTRACTION DURING IMPLANT INSERTION Authors Ufuk Iseri Assist. Prof., Nurhan Guler Assoc. Prof. Yeditepe University Faculty of Dentistry Department of Oral and Maxillofacial Surgery, Prosthodontics, Istanbul, Turkey ADO is effective for treating severe forms of alveolar ridge atrophy and a reliable technique for the correction of vertically deficient alveolar ridges. The complications rate is between 36% to 100%. Minor complications such as tipping of the bone transport segment, dehiscence, infection, lack of patient collaboration and perforation of the mucosa by the transport segment, and major complications such as resorption of the bone transport segment, device failure, fracture of the mandible, nonunion, dysesthesia of the mental nerve, and inadequate length of distraction have been reported. While minor complications can easily resolved by the use of appropriate procedures, major complications may lead to disappointing results and possible further surgery. In this poster presentation, the treatment

PP 228 INTERDISCIPLINARy ThERAPy Of ANODONTIA INVOLVING LOWER CENTRAL INCISORS Authors Carmen Stelea, Cristina Popa, Lorin Stelea, Norina Forna "Gr. T. Popa" University of Medicine and Pharmacy, Dental Medicine Faculty, Iasi, Romania Premolars and upper lateral incisors are the teeth most affected by anodontia, while the speciality literature mentions other dental structures that can show this condition. Anodontia involving lower central incisors create major aesthetic problems that can be treated using several methods. The following clinical case presents the interdisciplinary treatment of a patient showing anodontia of lower central incisors. The diagnosis was the result of accurate clinical and radiographic examinations. Material and Methods: The patient, a female aged 24, comes at the dentist's with class II Angle malocclusion and 31, 41 anodontia. Following local, general and radiographic clinical examinations conducted in order to discover any syndrome

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associated with anodontia, there are determined the stages of the interdisciplinary treatment (orthodontic, surgical and prothetic). Pre-surgical orthodontic treatment represents an important stage of the multidisciplinary therapy in case of anodontia involving lower central incisors. This stage of the therapy consists in applying a type Edgewise fixed orthodontic device, previously modified in order to align the teeth and to refine the occlusion. In this case, the width of the alveolar bone in the frontal area did not allow implants, so the most sensitive choice was to open the 32 and 42 spaces for implants. In the second stage of the therapy the dentoalveolar surgeon will fix two screw-type implants in the mandibular area which was previously created following the orthodontic treatment. Six months post-surgery, on the abutment of the implants the dental prothetist will realize metal-ceramic crowns which are then permanently cemented. In conclusion, interdisciplinary collaboration between orthodontist, oral and maxillofacial surgeon, and restorative dentist is extremely important for an aesthetic and functional result.

A case report of a 48 year-old patient with bilateral orofacial pain and local pain in the right temporomandibular joint (TMJ). She complains of numbness / tingling sensation in her fingers, and dizziness. She came in our clinic, thinking that her symptoms were coming from the thyroid. Further evaluation revealed cold nodule (right lob), and blood test TSH=18,2 T3=O.01,T4=0.003, also hypothyroidism was diagnosed and by scintigraphy. Patient also reports, after her second child birth(vaginal delivery) there was cessation of her menstrual period. We asked by her BDM which resulted (T-score < 2.5).After that, we thougtht to see orthopantograph, if we have problems in this joint after BMD. We concluded, she may be suffering from arthritis in these two joints, more often in TMJ (right). Conclusions: However we have a case with paint in TMJ, it will be helpful for pat ions to check the structure of temporomandibular joint.

PP 231 LIP CANCER

PP 229 LATE COMPLICATION MAXILLA

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Clinical center of Montenegro, Podgorica, Montenegro Introduction: Lip cancer represents the most frequent malignancy of the oral cavity. The most common type of lip carcinoma is squamous cell carcinoma (SCC). Materials and methods: We retrospectively analyzed medical records of patients diagnosed with SCC of the lip at the Clinic of Maxillofacial Surgery, University of Montenegro, during a period between 2003 and 2007. Results: A total of 76 patients with SCC of the lip were diagnosed and treated during a five year period. The male to female ratio was 3.75. Average age of our patients was 65.8 years. The most frequently affected site was the lower lip (89.4%), upper lip (7.9%) and lip angle (2.7%). Average size of the tumor was 19.3 mm (range from 4 to 74 mm). Neck lymph node metastases was detected in 7.9% of patients, who subsequently underwent neck dissection. After a median follow up of 42 months (range from 12 to 66 months), local recurrence occurred in 15.8% of the patients while regional metastases developed in 5.3% of patients. Conclusion: Early diagnosis is essential for the successful treatment of the lip squamous cell carcinoma.

Authors Hr. Lalabonova, Hr. Daskalov Institution: Medical University ­ Plovdiv, Faculty of Dental medicine, Department of Oral surgery, Plovdiv, Bulgaria The authors made a brief review of the described in the accessible literature complications after postoperative interventions in connection with jaw cysts of odontogenic origin. A case of not typical complication is described, which set in 8 years after the operation, in connection with maxillary cyst in the region of 21, 22. It manifests itself as a strong headache with pain, that irradiated to the region above the left eye. It was accompanied by sweating of the left face side. The authors try to find a logical explanation for its origin. Key words: radicular cyst, complication, syndrome of Frey

PP 230 LINK BETWEEN TEMPOROMANDIBULAR jOIN (TMj) AND OSTEOPOROSIS Authors K.Poshi, O.Tonuzi, S. Qamirani Diagnostic Center "Nora Med ", Nursing faculty `Department of Morpfology & Anatomy, Tirana, Albania

PP 232 LOW ENERGy LASER TREATMENT IN ThE MENAGEMENT Of APhThAE IN ThE ORAL CAVITy Authors Hr. Lalabonova, Hr. Daskalov Medical University ­ Plovdiv, Faculty of Dental medicine, Department of Oral surgery, Plovdiv, Bulgaria

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Authors Marija Antunovic, Aleksandar Lopicic, Mileta Golubovic

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The low energy laser treatment finds increasingly wide application in the dental practice. The authors share their experience from the treatment of 56 patients with aphthae in the oral cavity. A low energy laser treatment with L 680 nm was used. It was established that the pain, the main symptome in this disease, fades away immediately after the first procedure, and the lesion heals after 2-3 days. Key words: aphtha vulgaris, treatment, low energy laser treatment

during the physical examination and the filling of a thorough medical and dental history. Laboratory test provide essential informations. The management of patients with coagulopathies should be as atraumatic as possible and the use of local measures of hemostasis is of high importance. If the patient is undergoing an anticoagulation treatment, the communication with his doctor is necessary, so that the latter will decide whether to stop the treatment or just reduce the dose. This decision depends on the coagulation status expressed as PT or INR value.

PP 233 LOWER LIP CARCINOMA: A CASE REPORT Authors Alper Sindel, M. Eray Kolsuz, Erdal Erdem Ankara University, Faculty of Dentistry, Ankara,Turkey Lip carcinoma is the most common cancer of oral region. Squamose cell carcinoma is the biggest percentage of these cancers while basal cell carcinomas and adenocarcinomas occur more rarely. Its ethiology is multifactorial and it occurs most frequently in lower lip and in male patients aged 50 years or over who have been exposed to sunlight for long periods of time. As with other malignant tumors, also tobacco and alcohol have an important role. Surgery is the treatment of choice even if, for less extensive lesions.. Resection of the tumor is the surgical procedure indicated, and depending on the location and size of the tumor, different types of flaps are used. In this case report a lower lip ca involving nearly haf otf the lower lip and treated by V type excision has been peresented. Two years follow up examination revealed that the healing was good and there was no sign of recurrence.

PP 235 MULTIPLE AND RECURRENT KERATOCySTS NOT ASSOCIATED WITh SyNDROME - A CASE REPORT Authors Hulya Kocak-Berberoglu DDS PhD*, Amila Brkic DDS**, Esra Eyupoglu DDS** Department of Oral Surgery, Istanbul University Faculty of Dentistry, Istanbul, Turkey The presence of multiple and recurrent keratocysts both in mandibula and maxilla is not frequent, especially if it is not associated with one of the syndromes, such as the Gorlin-Goltz or nevoid basal cell carcinoma syndrome (NBCCS). The purpose of this report is to present a clinical case of recurrent and de-novo keratocysts with an apparently healthy 29-year old female patient who has been followed up for 5 years. Within three years of initial treatment, there were noted a recurrences of the lesions, which were enucleated before, with reappearances of new cysts in other locations. Avoiding the radicular mandibular resection as one of the treatment options due to the size and behavior of these clinical entities, large cysts were drained with a polyethylene drainage tube for eight months, allowing in this way their decompression, after which the patient underwent enucleation of the cysts under general anesthesia. The last follow up made 14 months post-operatively revealed no recurrences or new cysts. Key words: odontogenic keratocysts, enucleation, cyst drainage, recurrence

Poster Presentaions

PP 234 MANAGEMENT Of DENTAL PATIENTS WITh CONGENITAL OR ACQUIRED COAGULOPAThIES Authors Lazaridis Georgios, Lanara Rodopi, Antoniades Kostas Aristotle University of Thessaloniki, Greece Patients with congenital or acquired coagulopathies demand special management when they need a dental treatment that will inevitably lead to excessive bleeding. This is due to the fact that their coagulation system does not function properly and is, therefore, incapable of preventing or limiting hemorrhage. The coagulation disorder could be attributed either to congenital syndromes (e.g. Hemophilia A or B, von Willebrand disease) or to other conditions, such as hepatic diseases, anticoagulant treatment, vitamin K deficiency or primary fibrinogenolysis. The dentist should be able to identify any of the above conditions

PP 236 MyOBLASTOMA GRANULARE (GRANULAR CELL TUMOR) Authors Mandic D. Bojan, Mandic B. Borka Clinic for maxillofacial surgery, Faculty of Stomatology, University of Belgrade, Serbia Myoblastoma granulare is not an adequate term for soft tissue tumors that have a predilection site in oral cavity. It was considered they derive from skeletal muscles. In the light of contemporary investigations that confirm great presence

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of Schwann cells, the term granular cell schwanoma was suggested but patologists agree the most adequate term is granular cell tumor. Aim of this paper is to present the prevalence of granular cell tumors in the casuistics of the Clinic for maxillofacial surgery, Faculty of Stomatology, University of Belgrade. Materal and method: Retrospective analysis of twenty years of tumor casuistic showed the prevelance of myoblastoma granulare i.e. granular cell carcinoma. Results and discussion: This rare benign tumor is most frequently found in oral cavity and on skin. In our patients we found in more than one third of cases the tumor presence in tongue, most often in its dorsal surface. Buccal mucosa is the second most frequent location. The tumor usually appears in middle-aged adults over forty years old, and in children, but rarely. According to sex, women present the majority of patients. Our results concord with those that can be found in contemporary literature. All our cases were benign tumors, though some recent studies report of rare cases of malign granular cell tumors. The surgery is the therapy of choice and since the tumor is benign recedives do not appear. In malign cases, the other types of therapy are included. Prognosis is excellent, and the surgical act itself represents the end of treatment.

Faculty of Dental medicine, Madical University, Sofia, Bulgaria Purpose: To compare the etiology, presentation, type of trauma in Department of maxillofacial surgery, University Hospital St. Anna, Sofia over a period of 4 years. Materials and methods: During the period of from 01.05.2005- 31.01.2009 276 patients with maxillofacial injuries were indentified from Department of maxillofacial surgery, University Hospital St. Anna, Sofia. Patients were grouped into the following categories: age, gender, aetiologies, soft tissues injuries, type and location of fracture and associated injuries. Results: There were a total of 276. patients. Of these 216 were male and 60 were female with the mean age of 10-85 years. A total 216 bone fractures were indentified. Of these 49 were zygomatic complex fractures, 15 orbital blow out fractures, 70 mandibular fractures, 66 nasal complex fractures. There was a increase in the number of nasal and mandible fractures over the 4 years period. The most common cause of injury was a assault followed by road traffic accident. We will present a detailed analysis of other patterns of injuries. Conclusions: The changing pattern of trauma has several implications for injury prevention as well as surgical training. Our study highlights the areas which will require further focus in any future local health strategy. Key words: maxillofacial injuries, associated trauma, pattern

PP 237 OSTEONECROSIS Of jAWS RELATED TO BISPhOSPhONATES ThERAPy REPORT Of ThREE CASES Authors Cagri Bardak, Funda Yuksel, Sebnem Kursun, Erdal Erdem Ankara University, Faculty of Dentistry, Ankara, Turkey Bisphosphonates(BP) are succesfull antineoplastic drugs used in treatment of bone metastasis (breast ca, prostate ca,lung cancer, multiple myeloma) paget disease and osteoporosis.These drugs prevent bone resorbsion by inhibiting osteoclastic activity. They are synthetic analogs of inorganic pyrophosphates.A complication of long term BP therapy is osteonecrosis of jaws(ONJ).Several treatment options are suggested in ONJ. Conservative technics such as irrigation and long term antibiotic therapy are more preferable than invasiv technics such as surgery and resection.In this case report three cases of ONJ due to long term with bisphosphonates are presented. Treatments and long term follow up are reported.

PP 239 PROGENy AND ITS SUGICALy TREATMENT Authors Iniz Ajeti IPRSH "Albadent", Tetova, Macedonia The upper and lower jaw compound the biggest part of face skeleton, and each disorder in their shape and position is manifestated on the appearance of patient. These kind of disorders are manifestation with nonregular speech, malnutrition, and breathing difficulties, but also with disorder in esthetic view of patient, which patients, especially female patients take so much care. There exist difference between patient and doctor perception concerning the wish and possibilities for an ideal face. The patient motivation for intervention and their disturbances must be carefully listening, and take into consideration, but in the same time the patient psikologically must be preliminary prepared for the real possibilities. Finally, the good face esthetic and harmony for patient is as important as the harmonic correlation between jaws and teeth. The maxillofacial surgery its first efforts for surgically treatment of progenies has made in the second half of IX century, from different authors. Today, the combination of surgical and orthodontic procedures before and after the surgically treatment of these anomalies is very important. Also, in this team must be included the

PP 238 PATTERNS Of MAXILLOfACIAL INjURIES IN UNIVERSITy hOSPITAL ST. ANNA, SOfIA Authors Deliverska E., M. Rubiev

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endodonologtist, parodontologist, prosthetist, psicologyst and foniatrist too. For realization of this study, such as material were patients surgically healed in the Clinic for maxillofacial Surgery in Skopje and in the Clinic for Oro- Maxillofacial surgery in Tirana. For achieving functional and esthetic satisfactory results, for the surgeon is more than important the used operative method. For treatment of these anomalies there was used the method according Obwegeser Dal-Pont. From our study we can conclude hat, preparing before surgically treatment which content the exact diagnostication and the chose of the best surgically method, represent the basement for achieving the better surgical results, such as impulsion for getting the new diagnostic and surgically solutions. Key word: dentofacial anomalies, progenia, orthognatic surgery

Materials and Methods: Twenty patients with internal derangement were classified according to Wilkes13 by clinical radiological examinations. SOD activity was measured by the method based on nitrobluetetrazolium (NBTH2) reduction rate. Results: The activity of SOD seemed to be progressively decreased as the stage of the disease increased. Conclusion: The reduction of SOD activity observed may result from insufficient scavenging capacity of free radicals. Further investigation and longitudinal studies are required to determine the role of antioxidants that scavenge the free radicals in TMJ disorders.

PP 240 SINUS MAXILLARIS ANATOMO ­ MORPhOLOGIC RELATION WITh MOLARS AND PREMOLARS Of MAXILLA Authors Amet Demiri, Gjynele Demiri Medical Center - Tetova, Macedonia The position of sinus Maxillaris oposit dentition especially mollars and premillars is well known since Nataniel Highmore, but the analysis of relation in different pathologic situations is an object of permanent following up. The aim of this study was the investigation of practic relation of mollars and premollars with sinus Maxillaris. There was analyzed the distance of sinus Maxillaris and canines, premolars and molars with X-ray by 50 patients. According the getting results and consultated literature there is more than necesary that before each intervention in region of first and second Maxillary molar to make a X-ray graphy.

PP 242 SURGICAL- ORThODONTIC TREATMENT Of DENTITION TARDA - CASE REPORT Authors Pisevska-Colakova N., Peeva M., Apostolova G., Dzipunova B., Gavrilovic I. University Dental Clinic, St.Pantelejmon, Skopje, Macedonia Dentitio tarda of permanent teeth is a condition in which one or more teeth in the alveolar ridge do not appear at least 6 months after the time they normally erupt. It happens quiet often and in case it involves one solitary tooth, it does not cause any serious disturbances of the occlusion and articulation. But, when dentitio tarda embraces several teeth or whole group of teeth, the situation is completely different. Our case report is about an 11-year old patient in good general health condition. He is missing all of his permanent teeth in the upper and lower jaw that are expected to be erupted regarding his age, except teeth 31,41 and 42. Almost the same dental status is present in his father, which shows the genetic predisposition for this kind of dental anomaly. Using x-ray (orthopantomogram), the presence of all (not erupted) teeth in both jaws was confirmed. This complex condition of the child's teeth, implicated a need of team work e.g necessity of involving an orthodontic therapy for complementing the surgical treatment. In the first phase, we performed a corticotomy of 11, 21 and 22 and a placement of functional orthodontic appliance. In the next phase we will approach towards surgical relief of the next group of unerupted teeth and continuously follow up the patient's dental status.

Poster Presentaions

PP 241 SUPEROXIDE DISMUTASE (SOD) ACTIVITy IN SyNOVIAL fLUIDS IN PATIENT WITh TEMPOROMANDIBULAR jOINT INTERNAL DERANGEMENT Authors Orhan Guven DDS, PhD1; Umut Saracoglu Tekin DDS, PhD2 1 Professor; Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Ankara, Ankara, Turkey. 2 Assoc. Professor; Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Kirikkale, Kirikkale, Turkey Ankara University, Kirikkkale University Purpose: The purpose of this study was to measure the activity of superoxide dismutase (SOD) in the synovial fluid of patients with TMJ internal derangement and to reveal the relationship between the activity of SOD and the severity of the disease.

PP 243 SURGICAL MANAGEMENT Of ChILDREN: REPORT Of 3 CASES

AMELOBLASTOMA

IN

Authors Assist. Prof. Ceyda Ozcakir Tomruk, Msc. Dt. Ibrahim Tuncer, Prof. Dr. Nedim Ozer

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Yeditepe University, Faculty of Dentistry, Istanbul, Turkey Ameloblastoma is uncommon in the pediatric population, with only 8.7% to 15% of all ameloblastomas in Western countries, however the Asian and African reports show a higher percentage, ranging from 14.6% to 25%. The most common involvement is mandibular posterior region. The extent of surgical excision of mandibular ameloblastoma has been the subject of debate for many years. Although the recurrence rate is high, the treatment modalities have been focused on more conservative approaches such as decompression before enucleation with peripheral ostectomy in children because the growth of the jaws is not yet complete and the more radical resections that are necessary with solid ameloblastomas could lead to deformity and dysfunction. In this oral presentation 3 cases with ameloblastoma treated with decompression before enucleation with peripheral ostectomy will be presented.

characteristics such us costal and vertebrae malformations, characteristic faces (broad root of the nasal roots, frontal bossing), neurological (calcification of the cerebral falx, schizophrenia,), skin (cysts, lipomas, fibromas), hormonal, etc. Due to the seriousness of the disease, the early diagnosis and treatment which includes intrauterine molecular diagnosis, neurological examination every 6 months in children, ortophantomography every year, CT and MR for diagnostification of calcification of the cerebral falx, is essential, as well as family detection and genetic counseling are crucial. Case report: In this paper we review a 16year old patient L.L. with Gorlin Goltz syndrome which was affected with 3 keratocysts in the mandible, and was treated surgically and documented histological. Patient came into our clinic because of the bone deformities of the third molars region in mandibule in both sides. The medical history is reviewed; clinical examination is taken, as well as the ortophantomography, where bilateral cysts can be seen on the lower jaw and in the region of simphysis.

PP 244 SURGICAL TREATMENT Of MANDIBULAR fRACTURES: REPORT Of ThREE CASES

CONDyLE PP 246 ThE EVALUATION Of ARTICULAR EMINENCE ANGLE INCLINATION AND IT'S RAPORT WITh TEMPOROMANDIBULAR ARTICULATION Authors Sofika Qamirani, Nikollaq Leka, Ylli Menga, Dorian Kostandini, Tonin Kacorri, Ervin Veizaj U.F.O. University - Faculty of Dentistery, Tirana University Faculty of Medicine, Tirana, Albania The purpose of this study: In this study we tried to observe the role of articular eminence angle inclination in the disfunctions of the temporomandibular articulation. Materials and methods: In this study we took 150 cases, from this in 50 skulls we took silicone impressions of both left and right articular fossae, and in 100 patients we used scanning techniques to determine the EA inclination and we observed the changes that this inclination imposed in mouth opening and in bite alterations in this patients clinically. Combination of cranial measurements and scanning techniques helped us to compare results from other authors with our study. We determined the age of our skulls, based on EA inclination. Also, using Scanning techniques in patient, we determined the EA inclination and we observed the changes that this inclination imposed in mouth opening and in bite alterations in this patients. Discussion: The articular eminence of the temporomandibular joint dictates the path and type of condylar-disk complex movement. It has been suggested that a steep articular eminence inclination may predispose to temporomandibular joint dysfunction. We have seen that the bite registration is greatly affected by the articular eminence inclination. Furthermore, the articular eminence morphology has been related to specific facial types and mandibular movement of each person. We took silicone impressions of both left and right articular fossae from 50 skulls. In 100 patients we used scanning techniques to determine the EA inclination. They

Yeditepe University, Faculty of Dentistry, Department of Oral and Maxillofacial Surgery, Istanbul, Turkey Mandibular condyle is the most affected site in mandibular fractures. Condylar fractures can be extracapsular or intracapsular, displaced, undisplaced, deviated or dislocated. Treatment depends on the age of patient, presence of other facial fractures, whether the fracture is unilateral or bilateral, level of fracture, displacement and dental occlusion. Rigit internal fixation provides stabilization and allows early mobilization although conservative treatment is commonly preferred for the treatment of mandibular condyle fractures. Here we presented three cases of mandibular condyle fractures in adults which were treated by open reduction and fixation.

PP 245 SURGICAL TREATMENT Of ThE PATIENT WITh BASAL CELL NEVUS SyNDROME/CASE REPORT Authors V. Hamiti-Krasniqi, O.Sejfija, Z. Agani, M. Prekazi ­Loxha, J. Ahmedi, A. Nmani Privat Dentistry Clinic "Identity", Prishtina, Republic of Kosova Also known as Gorlin-Goltz syndrome, is an autosomal dominant inherited disorder in which exist the mutation of 9­th chromosome also known as drosophilia kromozom and which is characterized by the presence of multiple maxillary and mandibulary keratocysts which can sometimes be associated with facial basal cell carcinomas, along with other clinical

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Authors Venhar Susal Dds Msc, Cagri Delilbasi Dds Phd, Nedim Ozer Dds Phd, Ediz Deniz Dds Phd, Kemal Sencift Dds Phd

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Proceedings of BaSS 2009

were also photographed and seen clinically. The inclination of the articular eminence changes rapidly until the completion of deciduous dentition, attaining more or less 45% of its adult value. Using tables from different authors, we determined the age of our skulls, based on EA inclination. Also, using Scanning techniques in patient, we determined the EA inclination and we observed the changes that this inclination imposed in mouth opening and in bite alterations in this patients. Conclusions: In the cases studied, compared also with today's literature, we saw that there was a clear link between articular eminence angle inclination and the functioning of the temporomandibular articulation, it's pathologies and disfunctions. Articular eminence angle inclination played an important role in the condylar pathway and in mandibular deviations in the studied cases. This results, can serve as a modest help for the treatment of temporomandibular articulation pathologies by dental doctors, to consider the role of articular eminence angle inclination.

Anatomy. The location of mental foramen in 65% of the cases was at the end of the root of the second premolar tooth, in 26% of the cases the location was between the two premolar tooth and in 9% of the cases the position was distal from the root of the second premolar. According to gender, it was determined that there was not a significant difference in mental foramen position between male and female groups. According to age, it was determined that in old persons with distinguished alveolar atrophy and with lose of the teeth, mental foramen was located 3-4 mm up the position found in younger persons with more than 10 teeth remained in mandibulae. Conclusions: In this study we sow that the position of mental foramen was connected more with the age and not often with the gender. Also, in total we sow that the more likely position of mental foramen was under the root apex of the second premolar tooth. In some cases, we found the mental foramen superposed to root apex of the second premolar tooth in mandibulae making the diagnoses with apical pathologies difficult. Between male and female groups there were not significant differences according to the location of the mental foramen. Results confirmed a tendency of the mental foramen to go up depending from the scale of alveolar atrophy.

PP 247 ThE IMPORTANCE Of MENTAL fORAMEN AND NERVE LOCATION IN ANAESThESIA, PROSThETICS AND IMPLANTOLOGy PROCEDURES Authors Sofika Qamirani, Nikollaq Leka, Ylli Menga, Dorian Kostandini, Klodian Zani, Endrit Alija U.F.O. University - Faculty of Dentistry, Tirana University - Faculty of Medicine, Tirana, Albania The purpose of this study: The evaluation of the exact position of mental foramen and mental nerve in relation with age and gender. Materials and methods: In this study we examined 150 cases, from this 100 panoramex digital images and 50 mandibulae from skulls taken at the Museum of Normal Anatomy, Faculty of Medicine, Tirana University. The measurement of mental foramen position was done directly on a PC monitor, the measurements in mandibulae from the skulls were done with an electronic caliber. We selected the panoramex images and categorized them by age and gender, this was done also for the mandibulae taken at the Museum. Discussion: The alveolar inferior nerve (AIN) is the biggest branch of the mandibular division. AIN goes inside the mandibular canal through the mandibular foramen. In it's path we find also the alveolar inferior artery and vein. The nerve, artery and vein go forward in canal until they reach the mental foramen. We see a bifid alveolar inferior nerve in 0,95% of the cases, this results in two mental foramen in each side. In this case we have difficulties during anaesthesia. AIN is divided at the mental foramen in two terminal branches: in the incisive nerve and in the mental nerve. Usually the location of mental foramen is at the end of the second premolar root, although there are variations back and forward this point. We examined 50 male panoramexes and 50 female panoramexes. Measurements were done also in 50 mandibulae from skulls taken at the Museum of Normal PP 248 ThE ODONTOGENIC PAThOLOGIES Of DENTAL fOLLICLE IN PATIENTS WITh MULTIPLE IMPACTED TEETh IN ThE MANDIBLE Authors Gonca Duygu Dds, Nurhan Guler Assoc Prof, Nil Comunoglu Assoc Prof, Fatih Cabbar Dds Yeditepe University Faculty of Dentistry Department of Oral and Maxillofacial Surgery Istanbul, Turkey The presence of dental follicle (DF) adjacent to impacted teeth and the differences in the proliferation rates of oral epithelial cells occasionally lead to the development of cysts and tumors. The incidence of odontogenic cysts and tumor originated from this tissue are reported between 0,001% and 13,3%. There are numerious studies reported that the most common cysts originated from DFs of impacted teeth are dentigerous cyst (DC), odontogenic ceratocyst (OCC) and calcified OCC. The development of different odontogenic pathologies from DFs of multiple impacted teeth are rarely seen in the same patient. In this poster presentation we will present and discuss the treatment modalities of a 53 years old female had a DK, OCC and odontogenic myxoma originated from DF of bilateral impacted lower third molars and lower canine tooth.

Poster Presentaions

PP 249 ThE RISK PATIENT - ChALLENGE OR PROBLEM fOR ThE DOCTOR Of DENTAL MEDICINE Authors Hr. Daskalov*, L. Vladimirova-Kitova**, Hr. Lalabonova*

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*Medical University ­ Plovdiv, Faculty of Dental medicine, Department of Oral surgery, Plovdiv, Bulgaria **Faculty of Medicine, Department of Cardiology The pain is a main and strictly subjective criterion for the patients' assessment of the quality of treatment. The anesthesia is the basic part from the contemporary standards for good dental practice. The aim of the investigation is to establish how far the risk patient with cardiovascular disorders, receives an adequate anesthesia in the dental treatment Object of the study are 276 interviewed patients from the Clinic of Cardiology ­ St. Georgy University Hospital ­ Plovdiv, The Department of Cardiology ­ MBAL ­ Pazardjik, and private cardiological practices in Plovdiv, Smoljan and Pazardjik. For that purpose a questionnaire was prepared. It comprises questions about retrospective revision of previous dental interventions. The questions are orientated to specify the use of an anesthesia in the dental treatment, how far effective is it, if there is a refusal on the dentist part. Conclusion: It was established, that the doctors of dental medicine avoid the use of anesthesia in the cardiovascular patients. Key words: cardiovascular diseases, risk patients, complications, anesthesia

The retromandibular vein (temporomaxillary vein, posterior facial vein), formed by the union of the superficial temporal and maxillary veins, descends in the substance of the parotid gland, superficial to the external carotid artery but beneath the facial nerve, between the ramus of the mandible and the sternocleidomastoideus muscle. We examined 40 cases MRI, in 20 cases MRI we used the first method for indirect visualization. The retromandibular vein was identified, which lies just deep to the facial nerve. In 20 other cases MRI we used a second method by drawing a facial nerve line: a line joining the lateral surface of the posterior belly of the digastric muscle and the lateral surface of the ascending ramus of the mandible. Conclusions: The MRI images presented, compared also with other authors experience, show how this anatomic landmarks can be used in everyday practice by OMF doctors. Although, we don't have yet a single anatomic landmark or method, that allows us to locate the facial nerve with high accuracy. The methods presented can help indirectly to resolve this problem and can be used as a guide by OMF doctors.

Authors Ugur Meric DDS PhD*, Amila Brkic DDS*, Nihan Aksakali DDS, PhD** PP 250 TRACING ThE INTRAPAROTID PATh Of fACIAL NERVE IN MRI Authors Nikollaq leka, Sofika Qamirani, Dorian Kostandini, Ylli Menga, Elsa Alija, Frida Ferhati U.F.O. University - Faculty of Dentistery, Tirana University Faculty of Medicine, Tirana, Albania The purpose of this study: We want to trace the intraparotid path of the facial nerve in MRI by evaluating two different methods used for this purpose, and to give a modest and concrete idea in comparison with other authors. Materials and methods: In this study we examined 40 cases MRI, in 20 cases MRI we used the first method for indirect visualization. As the first method described, the retromandibular vein was identified, which lies just deep to the facial nerve ­ and this is presumed to locate the facial nerve. In 20 other cases MRI we used a second method. The second method consisted in the drawing of a facial nerve line: a line joining the lateral surface of the posterior belly of the digastric muscle and the lateral surface of the ascending ramus of the mandible. Discussion: Facial Nerve goes in front of posterior venter of digastric muscle and laterally to external carotid artery and posterior facial vein. Then it goes inside parotid gland and at the level of the posterior margin of the angulus mandibulae divides in the temporofacial branch and in the cervicofacial branch. *Institution: Department of Oral Surgery, Faculty of Dentistry Istanbul University Capa, **Istanbul Turkey; Institute of Oncology, Medical Faculty, Istanbul University Capa, Istanbul, Turkey Parakeratotic odontogenic keratocyst is the most frequently (80-85%) seen histological subtype of odontogenic keratocyst, characterized with very agressive clinical potentional and high rate of reccurence. In december 2007, a 56 years old female patient reffered to our department with a complaint of pain in the region of anterior mandible, which was present for 6 months. Extraoral examinations revealed no presence of asymmetry or lymphadenopaty. Clinical intraoral examinations disclosed a very bad oral hygiene with periodontal disease and gingival pigmentations. In the anterior part of mandible in the region of fornix vestibuli, there was no signs of swelling or tooth mobility. The radiographic examinations has revealed an oval well circumscribed radiolucent mass, located in mandibular symphisis beyond the roots of the incisor teeth. From patient' history, it was learned that the patient undergone trauma in the region of anterior mandible a few years ago.Under local anesthesia it was performed curretage of the pathological mass. Preoperative suspicious traumatic cyst, has been diagnosed as the parakeratotic odontogenic keratocyst. Key words: odontogenic keratocysts, parakeratotic, recurrence, enucleation

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PP 251 UNUSUAL CASE Of CENTRAL PARAKERATOTIC ODONTOGENIC KERATOCyST NON ASSOCIATED WITh TEETh - A CASE REPORT

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Proceedings of BaSS 2009

PP 252 VARIATIONS Of BLOOD PRESSURE DURING SURGICAL EXTRACTION Of ThIRD MOLARS Authors Zana Agani, O. Sejfija, F. Perjuci, R. Ademi, A. Gashi, V. HamitiKrasniqi, M.Prekazi-Loxha, J.Ahmedi University of Prishtina, Faculty of Medicine, Dept. of Oral Surgery, Prishtina, Republic of Kosova Abstract: During surgical extraction of third molars occurs the pain which is unpleasant sensation and experience. The procedure itself conducts the stress which is unequalled occurrence during this procedure. Stress brings to many reactions in the organism and one of them is the change (increase) of the blood pressure. The study is conducted to evaluate the variation of blood pressure, to healthy young patients with no history of cardiovascular disorders, in quantifying the blood pressure reaction to dental stress during surgical removal of third molars used in clinical practice. 21 healthy subjects (10 men and 11 women aged 20 through 35 years) who underwent surgical extractions of third molars were enrolled in the study. We measured systolic blood pressure, or SBP; diastolic blood pressure, or DBP; and hart rate HR, before given local anesthetics, during the dental extraction and five minutes after the dental extraction. The results will be statistically presented.

PP 254 OPERATIVE TREATMENT Of BENIGN TUMORS Of ThE PAROTID GLAND ­ A MODERN AND AESThETIC DECISION Authors Ts. Tonchev, Bulgaria Department of Oral and Maxillofacial Surgery Faculty of Dental Medicine, Varna The main postoperative problems connected with the treatment of benign tumors of the parotid gland are the function of the facial nerve, the face asymmetry, the operative cicatrices and eventually the development of Frey's syndrome. The use of facelift approach combined with SMAS technique when operating the parotid gland is a well-known method with successful postoperative results. The author presents the method as well as his own results from its application. The deep analysis proves that combination to be a very good decision, setting new aesthetic standards at this kind of surgery. Key words: Parotid gland; Surgery; Facelift approach; SMAS technique; Frey's syndrome

Poster Presentaions

PP 255 ThE REASONS Of SEVERE DIffUSE ORAL AND MAXILOfACIAL INfECTIONS (ThE PRESENTATION Of 41 CASES Of ODONTOGENIC INfECTION ON ORAL AND MAXILLOfACIAL DEPARTMENT, IN TIRANA hOSPITAL "MOThER TERESA" 2008) Authors Prof. Asc Ramazan Isufi, Dr. Andis Qendro, Dr. Jakup Vrioni HOSPITAL "MOTHER TERESA", Albania

PP 253 ECTOPIC ThIRD MOLAR SITUATED IN ThE EThMOIDOSPhENOIDAL AREA Of ThE MAXILLARy SINUS Authors Ts. Tonchev, Bulgaria Department of Oral and Maxillofacial Surgery Faculty of Dental Medicine, Varna A twenty one year old patient was admitted for treatment in Department of Oral and Maxillofacial surgery of "St. Marina" hospital. An panoramic radiography and a plain skull radiography was conducted to confirm the diagnosis - ectopic third molar and a pathological finding in the right maxillary sinus. Further examination through CT determined a cystic formation in the right maxillary sinus and an ectopic third molar in the ethmoido-sphenoidal area of the sinus. The operative removal of the tooth and the cyst was carried out trough transantral approach. There were no complications during the postoperative period. The author reviewed the world literature concerning this case. Key words: Ectopic molar; Maxillary sinus; Maxillofacial surgery; Ethmoido-sphenoidal area

Severe odontogenic infections as a serious illness or cause of death have been known since antiquity. In the modern surgical but pre-antibiotic era odontogenic infections were associated with a significant death rate in the range of 10-40 per cent. With the advent of penicillin and the subsequent developments of a range of antibiotics, odontogenic infections, along with many other infections, became considered as easily managed conditions. However, in the last 20 years there has been a progressive return of serious antibiotic resistance. This has been insidious and there has been a tendency for serious odontogenic infections to be dismissed in hospital practice as simple dental problems. Methods and results: There have been analyzed 41 cases recovered on Oral and Maxillofacial Department, in Tirana Hospital " Mother Teresa" in 2008. One of these patients has severe diffuse odontogenic infection on maxillary jaw, and 5 on mandible jaw. Detailed information relative to their presentation history, surgical and anaesthetic management and outcome was obtained and analysed. According the last study done on our clinic for the period 1996 - 2008 odontogenic infection are about 16.4% of all pathologies, while odontogenic diffuse infection are 9.4%. In the base of the study of infections diffuse only for 2008 results 6 cases or 14.6 % infections diffuse.

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Conclusions: Severe odontogenic infections appear to be on the increase and odontogenic infections are a serious risk to the patient's health and life. They are mainly the result of prolonged patient neglect of routine dental problems although sometimes they are the result of unsuccessful dental treatment. Antibiotics are an essential adjunct in surgical management but antibiotics used alone may contribute to the worsening of the condition. Odontogenic infection in advanced stages, even with appropriate treatment, is a potentially fatal condition. During to all the patient cases, primary has been surgical treatment through incision and drainage with antibiotic (penicillin +metronidazol, ceftriaxon +amikacine + metronidazol). Key words: Odontogenic infection, antibiotics, airway.

Department of ORL ­ Oromaxillofacial, Albania The objective of the article is to study the association between the peristomal recidives with the tracheotomy, when the latter is done 10-15 days prior to the laryngectomy. Methodology: The study has taken into consideration the patients who have undergone a total laryngectomy followed by radiotherapy. These patients have been admitted in our clinic during the period 2002-2003. Results: University Hospital Centre of Tirana is the only centre in Albania, where are treated all the cancers in the field of ENT. During the period of 2002-2003, from a total number of 151 patients with laryngeal cancer, only 72 cases have been treated with total laryngectomy. From this group 11 subjects have undergone a tracheotomy before the main surgery. All these patients have manifested peristomal recidivs in a later stage. Conclusions: The majority of the subjects with laryngeal cancer are presented in our clinic in a late stage of the disease (stage III and IV). This was the main reason for carrying out the tracheotomy of emergency prior to the total laryngectomy. The manifestation of peristomal recidives in all these cases showed a clear connection between the two procedures. We recommend that in a case where a tracheotomy of emergency is needed, the final surgical intervention should be undertaken immediately afterwards, for reducing the risk of peristomal recurrences.

PP 256 TEMPORO-MANDIBULARy DISORDERS: PAIN AND AURAL SyMPTOMS Authors Orjeta Tonuzi*, Ruzhdie Qafmolla**

CRANIOfACIAL

*Nursery Faculty **Faculty of Medicine, Department of Stomatology, Tirana, Albania ATM as all other articulations of the human organism, affected by most and different pathologies. The most and quickly pathology that was investigated in clinical practice, is its intra-articulation disorders. The symptoms of these disorders like: the ATM and ear pains, troubling, clinching etc., are the symptoms which are distributed in ATM, at the aural area and are reflected as well near the neck, spatula etc. The main objective of our study is to find the appearance correlations anatomic- embryonological that existed in accordance with in-nervous, vascular etc., between ATM and middle ear, neck and spatula etc. We have study 141 patients with intra-articulation disorder, who have strong pain, troubling surround the ear zone and headache. The patients are investigated by objective ­ subjective examination, as well as by magnetic resonance. We found the intra-articulation disorders that are combined with biting muscles spasms and hyper mobility of the condile. The adequate treatment has given decrease of these symptoms at about 70% of the total patients. Key words: craniofacial pain, aural area, headache, adequate treatment

PP 258 EffECTS Of RESIN-MODIfIED GLASS IONOMER CEMENTS ON PREVENTION Of DEMINERALIZATION AROUND ORThODONTIC BRACKETS: AN IN VITRO STUDy Authors Mihri Amasyali,* Tancan Uysal,** Alp Erdin Koyuturk,*** Deniz Sagdic* *GMMA, Center of Dental Sciences, Dept. of Orthodontics, Ankara; Turkey **Erciyes Univ., Faculty of Dentistry, Dept. of Orthodontics, Kayseri; Turkey ***19 Univ., Faculty of Dentistry, Dept. of Pedodontics, Samsun, Turkey Enamel demineralization is recognized as a possible side effect of bonding orthodontic brackets with composite resins. The aim of this study was to test the null hypotheses that there is no difference in the demineralization protective effect of resin-modified glass ionomer cements (RMGIC) and Fluoride varnish during bonded-orthodontic therapy by DIAGNOdentPEN (KaVo, Biberach, Germany) as the detector. Sixty extracted human maxillary premolar teeth were used in this study and randomly divided into 3 equal groups. Orthodontic brackets were bonded with RMGIC (Fuji-Ortho-LC, GC Company, Japan) in Group 1 and bonded with orthodontic composite (Transbond XT, 3M Unitek, USA) in Group 2. In the last group brackets were bonded with the same as Group 2, but the fluoride varnish was applied around the brackets after bonding

PP 257 ThE RELATION BETWEEN ThE PERISTOMAL RECIDIVES AND ThE TRAKEOTOMy Authors Besim Boci, Ramzan Isufi, Jakup Vrioni

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procedure was completed. All samples were then cycled for 21days through a daily procedure of demineralization for 6 hours and remineralization for 17-hours. DIAGNOdent-PEN scores of groups were analyzed by analysis of variance (ANOVA) and Tukey HSD test. Demineralization scores of Group 2 (control, mean: 12.15±3.83) was significantly higher than that of Group 1 (RMGIC, mean: 9.49±3.33) and Group 3 (fluoride varnish, mean: 7.28±1.79). No significant difference was observed between the mean scores of groups prepared with RMGIC and fluoride varnish (P>0.05). When compared to the scores of control, teeth bonded with RMGIC were lowered demineralization; however the teeth treated with fluoride varnish exhibited most preventive effects against demineralization.

enamel demineralization when orthodontic composite is used for bonding. The use of both agents should be recommended for any at-risk orthodontic patient to provide preventive actions and potentially remineralize early (subclinical) enamel demineralization.

PP 260 APICAL BASE SIZE AND ITS RELATIONShIP WITh ThE SIZE Of ThE DENTAL ARCh AREA IN SUBjECTS WITh NORMAL OCCLUSION Authors Yordanova S.*, Yordanova M.*

PP 259 PREVENTIVE EffECT Of CASEIN PhOSPhOPEPTIDEAMORPhOUS CALCIUM PhOSPhATE ON ThE DEVELOPMENT Of WhITE SPOT LESIONS DURING BONDED ORThODONTIC ThERAPy Authors Tancan Uysal,* Mihri Amasyali,** Alp Erdin Koyuturk,*** Deniz Sagdic** *Erciyes Univ., Faculty of Dentistry, Dept. of Orthodontics, Kayseri; Turkey **GMMA, Center of Dental Sciences, Dept. of Orthodontics, Ankara; Turkey ***19 Univ., Faculty of Dentistry, Dept. of Pedodontics, Samsun, Turkey Enamel demineralization is an undesirable side effect of orthodontic treatment with fixed appliances. The aim of this in-vitro study was to compare the efficacy of 10% casein phosphopeptide-amorphous calcium phosphate (TM) and fluoride varnish on enamel demineralization around the orthodontic brackets by DIAGNOdent-PEN (KaVo, Biberach, Germany), containing a laser-diode as the excitation light source, and a photo-diode combined with a long pass filter, as the detector. Sixty extracted human first-premolars were allocated to 1 of 3 groups: (1)no treatment (control), (2)fluoride varnish (Fluor Protector; Ivoclar-Vivadent, USA) and (3) TM (GC-Tooth-Mousse) was applied around the bracket margins. All orthodontic brackets were bonded with composite (Transbond XT, 3M Unitek, USA) and cured with a light-emitting-diode. All samples were then cycled for 21-days through a daily procedure of demineralization for 6-hours and remineralization for 17-hours. DIAGNOdent-PEN scores of groups were analyzed by analysis of variance (ANOVA) and Tukey post-hoc test. According to ANOVA, significant differences were determined among groups (F=14,624; P<0.001). Tukey test showed that fluoride group (mean: 7.28±1.79) showed the lowest demineralization scores and the differences were found statistically significant than TM (mean: 9.76±2.55)(P<0.05) and control (mean: 12.15±3.83)(P<0.001). Statistically significant difference was also observed between the mean scores of the TM and control groups (P<0.05). The application of TM or fluoride varnish can significantly prevent

*Department of Orthodontics, Faculty of Dental Medicine, MUPlovdiv, Bulgaria Introduction: An assessment of the apical base size and its relationship with the dental arch parameters in norms and malocclusions tends to find new diagnostic approaches. We designed a method for indirect imaging of the apical base by means of radiographs of orthodontic cast models. Radiographic images were then scanned and the apical base area and the dental arch area were calculated by a computer program. The aim of this study is to examine the size of the apical base in the upper jaw and its relationship with the size of the dental arch area in bulgarians with normal occlusion. Material and method: Plastic models of the upper jaws of 30 non-treated orthodontically adults with normal occlusion were analysed. The assessment of the apical base and the adjacent dental arch was done by means of the method described above. Results and conclusions: The data showed that mean maxillary apical base area is 1517.7 ± 29.5 mm2 and mean maxillary dental arch base area is 1542.4 ± 27.1 mm2. The mean value of ratio dental arch base to apical base is 1.02 ± 0.01. Both areas showed high correlation (R=0.87; p<0.001). No correlation was found between the sum of the incisors and the mentioned ratio. This preliminary results may serve as norms and give an opportunity for making diagnostic and prognostic conclusions in treatment planning. Key words: apical base, dental arch area

Poster Presentaions

PP 261 APPLICATION Of ThE TRIDIM SOfTWARE IN PREDICTION MODELLING fOR ThE ORThODONTIC - SURGICAL MANAGEMENT Of DENTO-MAXILLARy ANOMALIES Authors Manuela Popescu*, Olivia Popoviciu*, Octavian Dinca**, Prof. Dr. Alexandru Bucur**

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*Department of Orthodontics and Dento - Facial Orthopedics, **Department of Maxilo-Facial Surgery, University of Medicine and Pharmacy, Bucharest, Romania Elaborate preoperative preparing is required during the complex orthodontic-surgical management of skeletal dentomaxillary anomalies. It involves an initial orthodontic stage, aiming to reshape dentoalveolary structures and correct dental compensations. The presurgical planning allows for manufacturing the intermediate and final splints to be used during the surgical procedure. The orthognathic surgery procedure is generally chosen after measurements on the profile cephalogram and/or, recently, 3D CT analysis. The development of medical inaging allowed the appearance of various software, easing interpretation and also allowing surgical simulations for both hard and soft tissues. One such program is TRIDIM, developed by J. Delaire, which allows a better surgical and orthodontic prediction as part of the complex planning for dento-maxillary anomalies treatment.

Conclusion: Asymmetric premaxillary distraction is an efficient method to correct the maxillary midline shift and to increase maxillary arch length.

PP 263 BIMAXILLARy ORThAGNAThIC SURGERy DIMENSIONAL MIMICS PROGRAM

By

ThREE

Authors Yilmaz F, Karacayli U, Yildirim E, Karacay S, Gokce SM Gulhane Military Medical Academy, Ankara, Turkey Introduction: Three dimensional mimics program has been successfully used to evaluate the possible postoperative profile following orthognathic surgery. Purpose: The aim of this case report is to present the usage of mimics program in the planning of orthognathic surgery. Case report: A 23-years-old patient refereed to department of orthodontics for treatment. Intraoral examination of the patient revealed a Class III molar relationship and diastema between maxillary incisors. In the extraoral examination, concave profile and mandibular deviation to right side were observed. Cephalometric analyses revealed a short face syndrome with retruded maxilla and protruded mandible. Three dimensional mimics program was used to plan the surgical procedure and postoperative profile changes were evaluated for three different treatment choices. The first alternative was mandibular setback of 6mm at the right side and 8mm at the left side. The second alternative was to dislocate the maxilla 6mm in the anterior direction. The third choice was bimaxillary surgery with mandibular set-back of 4mm at the right side and 5mm at the left side combined with maxillary dislocation of 4mm in the anterior and 3mm in the inferior direction. Evaluation of the images created by three dimensional mimics program revealed that the best results were achieved by bimaxillary surgery. Following the fixed orthodontic treatment and bimaxillary surgery, esthetic and functional results were obtained. The postoperative profile of the patient was in accordance with the images created by the mimics program. Conclusions: Three dimensional mimics program is an available tool in the planning of orthognathic surgery.

PP 262 ASyMMETRIC DISTRACTION:

MAXILLARy

ANTERIOR

SEGMENTAL

Authors Yilmaz F, Okcu K M, Karacay S, Gorgulu S, Bengi O Gulhane Military Medical Academy, Ankara, Turkey Introduction: Premaxillary anterior segmental distraction may be performed in the treatment of dental and skeletal anomalies due to anterior maxillary deficiencies. Purpose: In this case report asymmetric application of this technique was used to correct the midline shift and to create space for the eruption of the impacted maxillary canine. Case report: 13-year old patient had maxillary midline shifting 3mm to the right side. Maxillary right canine was impacted due to the maxillary arch deficiency and left lateral incisor was in cross bite. A maxillary anterior segment osteotomy was performed under general anaesthesia and the premaxilla was made mobile. Anterior movement of the premaxillary segment was generated by a tooth-borne distractor. The distractor screw was embedded closer to the shifting side. In order to prevent distraction of the other side, anterior and posterior segments of the appliance were tied to each other on the contralateral side. Due to this mechanism, the distractor worked like a fan-type screw and distracted one side more by forcing the premaxilla to rotate and the midline shift was corrected. The distractor was activated 0.5mm/day. After 14 days of asymmetric activation, the tie of the contralateral side was extracted and the activation continued for seven more days. Total activation peri od was 21 days. During the consolidation period of 3 months, the impacted canine erupted and the treatment continued with fixed appliances.

PP 264 COMPARATION Of DETERMINATION

METhODS

fOR

DENTAL

AGE

Authors A. Duborija, D. Subotic, A. Vukovic, A. Scepanovic-Djurovic Klinicki centar Crne Gore, Podgorica, Montenegro Introduction: Precise determination of dental age is for a long period of time a very important issue in therapy planning fo

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orthodontic patients. In literature there are disputes about this matter and description of numerous methods for dental age determination. Aim: Aim was to compare patients chronologic age with their dental age which was determined with two well-known methods. Material and method: Assesment of dental age by Matiegka´s method is based on determing the number of erupted teeth by clinical examination. Assesment of dental age by Demirjan´s method is based on determing the deegre of permanent teeth mineralisation using panoramic roentgenograms Dental age assessment was performed using both methods in 50 patients of female gender and 10 years chronologic age. Results and discusion: Results obtained were compared to each other and to chronologic age of patients and presented statistically. Analysis of results shown that dental and chronologic age have high degree of correlation, in most cases, regardless of method used. Greater degree of precision in determing dental age was achived when method by Demirjan was used. Results obtained indicate that when the dental age is determined, with high degree of probability, chonologic age can be predicted. Comparing results form two methods used, it was concluded that high degree of correlation exists beetwen them and that differences were not statistically significant.

ANOVA. Relationships between skeletal measurements and glenoid fossa and condyle positions were analyzed by pearson correlation test. Results: Dramatic improvement was established to both soft and hard tissues by chin cup therapy. Both condyle and glenoid fossa grown downward and backward direction in both study groups. Some significant correlations were found between skeletal and condyle and glenoid fossa parameters in chin cup group. Discussion and Conclusion: Chin cup cause posterior and inferior displacement of condyle and glenoid fossa.

PP 266 DEEP-BITE TREATMENT USING BEGG TEChNIQUE: A CASE REPORT Authors Ozge Uslu, Aysegul Koklu Ankara University, Faculty Of Dentistry, Department Of Orthodontics, Turkey The aim of this case report is to evaluate the effectiveness of Begg technique in the treatment of a deep-bite case. A 12 year 5 month old girl had a convex profile, Class I molar occlusion with a 3 mm overjet and 5 mm overbite. She was in the MP3u skeletal growth stage and completed 97.2 % of her skeletal growth. Begg fixed appliances were used for the alignment of teeth and correction of deep-bite. The total treatment time was 13 months. The upper right lateral incisor was filled with composite materials. Hawley plates were used for the retention of upper and lower dental arches. Perfect occlusion and harmonious facial profile were obtained in a short treatment period.

Poster Presentaions

PP 265 CONDyLAR GROWTh AND GLENOID fOSSA DISPLACEMENT By ChIN CUP ThERAPy Authors Hatice Gokalp, Tugba Kayasu Institution: University of Ankara, Department of Orthodontics, turkey Objective: The aim of this study was to assess glenoid fossa changes and condylar growth provided by chin cup therapy in Class lll malocclusion associated with mandibular prognathism. Material and Method: This study was conducted on 23 subjects with Class lll maloccclusion associated with mandibular prognathism treated by chin cup. Mean age of chin cup group was 9, 83 ± 2, 16. Chin cup group was comprised with control group included in 23 subjects with Class l malocclusion. Mean age of Control group was 11, 53 ± 1, 42. Chin cup of 500 gm force was applied on condylar direction. When positive overjet was achieved using of chin cup appliance was ceased. Duration of chin cup therapy was 18 month. Measurements were made on lateral cephalograms taken before (T1) and after (T2) chin cup therapy. In addition to skeletal measurements, glenoid fossa position and condylar growth changes provided by chin cup were also evaluated on lateral cephalograms. Available data were evaluated by repeated measurements

PP 267 DENTAL AND fACIAL ESThETICS: GOALS Of ThE INTERDISCIPLINAR ORThODONTIC TREATMENT Of ADULT PATIENTS Authors Alexandru Ogodescu, Irina Zetu, Emilia Ogodescu, Cristina Bratu, Stefan Stratul, Darian Rusu School Of Dentistry, University Of Medicine And Pharmacy "Victor Babes" Timisoara, Romania Introduction: In the last years the number of adult patients who seek for orthodontic treatment has increased substantially. Although it is important to create proper tooth contacts the patients want to have better dental and facial esthetics. Purpose: To re-emphasize with three clinical cases the importance of the esthetic goals in the interdisciplinar (orthodonticperiodontic-restorative) treatment of adult patients.

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Materials and method: Three adult patients of 28, 48 years of age, with abraded teeth, missing papillae, gingival margins and periodontal bone loss were with an interdisciplinar protocol. We focused on the problems and solutions for this pathology.

42 and uneven treated specific

way for orthodontic guided eruption of canine. Clinical case of patient with unusually situated impacted canine has been presented. Diagnostics with conventional X-ray methods used first was unsuccessful. The spatial relationships of the impacted canines relative to adjacent structure and incisor resorbtion were assessed with 2D and 3D visualization software. Method: Convectional X-ray methods (Dick, Simpson and orthopantomography) and new digital X-ray imagines (2D and 3D CT) were used in this study. Results: The conventional methods proved to be useful only in simple cases. CT and 3D imagine allow to have high-definition imagine focused on the small details. Thus there is an opportunity to evaluate the canine's position according to its adjacement structure and the resorbtive process already presented. From the results, the novel X-ray imagine's techniques investigated in this study, are applicable in diagnosis of different cases. Conclusions: CT is a method of election in difficult cases of impacted maxillary canines due to its better diagnostic opportunities for exact surgical and orthodontics treatment.

Results and conclusions: The impressive improvement of the dental and the facial esthetics in all the patients is an argument to initiate and develop collaboration between the different specialities from dental medicine in order to use all the recent developments to enhance the patients oral health and esthetics.

PP 268 DENTAOALVEOLAR ChANGES IN PATIENTS WITh CLASS II/1 TREATED WITh TWIN BLOK APPLIANCE Authors Zeljko B. Milosavljevic, Predrag V. Nikolic, Tijana Z. Vulicevic School of Dentistry, Orthodontic department, Belgrade, Serbia This study was designed to investigate the maxillomandibular dentoalveolar changes produced by the Twin block appliance. The treatment group consisted of 20 consecutively treated patients with skeletal Class II/1 malocclusion (ANB > 5°, U1/ SpP< 65°), full cusp Class II molar relationship. The present study was carried out on lateral cephalograms taken before and after the treatment. Angular measurements: U1/SpP, U1/SN, L1/GoGn, U1/L1. Linear measurements: Upper and lower anterior dental height, upper and lower posterior dental height, vertikal (overbite) and horizontal (overjet) distance between incisors, U6 to Ptv and L6 to Ptv. Overjet decreased, the distal movement of the upper molars and the mesialization of the lower molars was observed. Upper incisors demonstrated agreat degree of retrusion and the interincisor angle increased. Decrease in the degree of overbite occured.

PP 270 EVALUATION Of ThE TONGUE MOVEMENTS AfTER ThE TREATMENT Of MANDIBULAR RETRUSION: REPORT Of TWO CASES Authors Yilmaz F, Karacay S, Gorgulu S, Sagdic D, Bulakbasi N Gulhane Military Medical Academy, Ankara, Turkey Introduction: Deglutition is a very basic and important function, involving the complex coordinated activity of multiple voluntarily and involuntarily contracted muscles of oropharynx, larynx, and upper digestive pathway. Tongue movement is also important in deglutition. Purpose: The aim of this poster is to preset the alterations in tongue movements following the treatment of skeletal class II malocclusion.

PP 269 DIAGNOSTIC VALUE Of COMPUTERIZED TOMOGRAPhy (CT) IN DIffICULT ORThODONTIC-SURGICAL CASE Of IMPACTED MAXILLARy CANINE Authors Hr. Arnautska, T. Geeorgiev, PhD Department of Orthodontics Faculty of Dental Medicine, MUVarna, Bulgaria Aim: The aim of this research was to establish the need of using CT and 3D imaging systems in diagnostic of impacted maxillary canines in combined orthodontic-surgery treatment. Subject: To precisely localize the impacted canines in order to reduce the incidence of iatrogenic damage of adjacement structure; to determine the surgical approach and to set a

Material and Methods: Two patients with class II division I malocclusion were treated with twin block appliances. Deglutitive tongue movements were determined with realtime B-TFE Cine-MR imaging before treatment and during the sixth month of the retention period. Selected cine images were transferred by image capture program. Images matching with the oral, esophageal, and pharyngeal stages of deglutition were determined and printed on a radiograph. Linear measurements were made on these radiographs for each stage. Evaluation of the measurements revealed that during the retention period, tongue tip positioned more anteriorly and middle portion of the tongue positioned more inferiorly at all stages of the deglutition, according to the pre treatment values. Posterior portion and root of the tongue showed alterations only at pharyngeal stage. At this stage, posterior portion of the tongue positioned more inferiorly and the root was in more rearward position after treatment of mandibular retrusion.

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Conclusion: Tongue movements during deglutition are affected by dental components and maxillofacial structures. Tongue perceives the maxillofacial morphology so the movements of tongue may change after orthodontic treatments. Tongue adapts to the new occlusion by changing its posture and deglutitive movements after orthodontic treatment.

Faculty of Dental Medicine - Bucharest, Romania The disturbance of neuromuscular and articular balance appears to be one of the most common characteristics of many dento-maxilar anomalies. The dysfunctional factor is either mainly etiological, over added etiological or triggering of the anomaly. The dysfunction may strictly represent a consequence of the maxillary anomalies. This study presents several cases solved through functional therapy. Results obtained immediately and over the long term proved that functional appliances are effective through their complex action during the mixt dentition at the skeletal, dental and muscular levels. The range of functional devices is quite broad, but all are based either on the change in muscular tonus or the deviation of muscular traction with respect to the reconstruction of the elements of the dento-maxilar system in a balanced mode, with correct intermaxilar and ocluzal relationships. The purpose is not only to obtain a certain functionality, but rather a remodelling of the normal parameters of the anatomic structures composing the stomatognatical system. Success depends on the correct concept, technical execution, but also on the patient\'s cooperation.

PP 271 EXPANSION Of MANDIBULAR ARCh USING LEONE INfERIOR ARCh EXPANDER.CASE PRESENTATION. Authors Ass. Dr. Bratu Dana Cristina*, Ass. Prof. Dr. Jianu Rodica*, Prof. Dr. Glavan Florica*, Dr. Ivanova Yana *Department of Peadodontics and Orthodontics, Faculty of Dentistry Timisoara,Romania Key words; mandibular expansion, Leone inferior arch expander,arch perimeter Introduction: There is a controversy regarding the ideal time for performing the expansion. Maxillary and mandibular expansion has been proposed since Angle to avoid extraction. There are many methods to increased the arch perimeter, in our case using, Leone inferior arch expander.Arch widths are clearly adaptable;active maxillary expansion, alone has been shown to spontaneously produce mandibular expansion. Material and Method: Patient A.M., 9 year old,with mixed dentition, class II/2 anomally and sever bimaxillary crowding. The maxillary dental arch was expanded using Schwarz appliance and the inferior arch was expanded with Leone inferior arch expander(A0623-08 screw) to increase the molar and canine widths.The next step of orthodontic treatment was to correct the intermaxillary relationship (class II/2) using for1 year a activator appliance and final for aligment the tooth and leveling the oclusal plane fixed appliances. Conclusion: After one month of activation the increase of the molars was obtained.It had a value of 4,4 mm and the buccal tooth angulation was 8 degrees.The buccal angulation of the teeth and modifications in intermolar width were constantly took into consideration, because of the limits for mandibular expansion(Motoyoshi & all 2005).This value was obtained by measuring the angle between the masticatory plane of the first lower molar (left and right)and oclusal plane with the formula of permisibile limits(Motoyoshi & all 2005). A considerabile lateral expansion of the mandibular arch is possible,contributing greatly to nonextraction orthodontic treatment.

Poster Presentaions

PP 273 fUNCTIONAL TREATMENT TIMING RETROGNAThIA Authors Guney Volkan, Akcam Mehmet Okan

Of

MANDIBULAR

Ankara University, Faculty of Dentistry, Department of Orthodontics, Ankara, Bulgaria In this study, the effects of activator used for functional treatment of skeletal Class II, div. 1 malocclusion characterized by mandibular retrognathia on dentofacial structures were investigated in three pubertal growth periods. Pre and post-treatment lateral cephalometric and hand wrist films were obtained from 36 individuals (1 st group: 12 prepubertal, 2 nd group: 12 pubertal and 3 rd group: 12 postpubertal). All had skeletal Class II, div.1 malocclusion and were selected from the orthodontic department archive. Grouping was managed considering growth periods according to hand wrist maturation. All the treatments were done by Class II,div.1 activator, without an extraoral appliance. Comparison of skeletal and dentoalveolar responses achieved with treatment between the groups were evaluated by analysis of variance (ANOVA) and Tukey tests. Findings indicated that, reduction in the ANB angle was similar in the groups. A remarkable increase in the lower posterior alveolar height was observed in the pubertal group (mean 2.4 mm). Utmost overjet reduction was obtained in the pubertal group which was significantly different from the other groups (P<0.01). An increase in mandibular length (Co-Pg) was observed in each group, but yet, statistically insignificant. Pubertal group showed the highest increase in the mandibular length (mean 4,8 mm)

PP 272 fUNCTIONAL APPLIANCES UP TO DATE Authors Ozana Alexandrescu, Ruxandra Matei, Dragos Paduraru Pantea, Sanziana Alexandrescu, Dan Alexandrescu

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As a result, it is suggested that the most suitable treatment time for functional treatment is the maximum pubertal growth stage, considering differential effects of the treatment on dentofacial structures.

PP 274 INTEGUMANTAL PROfILE IN OPENBITE PATIENTS Authors Mehmet Birol Ozel, Berna Ozdemir Ozel, Aylin Alacam Karadeniz Tecnical University, Faculty of Dentistry, Department of Orthodontics, Trabzon, Turkey Aim: To evaluate the relationship between tongue, facial soft tissue structures and skeletodental structures in adult openbite cases. Material and method: Lateral cephalometric films of 20 untreated adult openbite cases were analyzed. The mean age was 16.91 years. Horizontal and vertical linear measurements of skeletal, dental and soft tissue were done according to Epker's criterion. The group was divided into two subgroups according to soft tissue specifications. Results: The results of N-par test revealed that the differences were mainly depended on the tongue and soft tissue homeostasis. The height of the lower lip is the main factor for the tongue height. No significant differences relevant with palatal depth and negative overbite were found horizontal and vertical positions of upper and lower incisors correlate with the horizontal and vertical position of antagonist incisor, tip of the tongue, lips and palatal depth whereas overjet does not correlate with any of these parametres but overbite has a correlation just only with the vertical position of lower incisor. The length of the tongue had a relation with the height of the tongue but neither the length nor the height of the tongue showed any correlation with skeletal structures. Openbite correlates only with vertical position of lower incisor in adults. The tongue itself is an independent tissue which is connected to and surrounded by skeletal and dental structures and shows adaptation not with its dimensions but its position. So early treatment should be considered in openbite cases in order to maintain soft and skeletal harmony.

The importance of the dentition and contribution of the orthodontist to the care of cleft patients from infancy to adulthood are presented.. Close communication between orthodontists and surgeons is emphasized. The orthodontic treatment plan is developed around the anatomic, functional, and developmental needs of the patient. Rigid external distraction in patients with severe maxillary hypoplasia allows full correction of the deformity through treatment of the affected region only. It has allowed us to treat patients in all age groups. We use this technique (external, adjustable, rigid midface distraction device) in patient with cleft lip and palate with severe maxillary hypoplasia. A case report shows the use of the technique. Rigid external distraction has dramatically improved our treatment results for patients with severe cleft lip and palate with maxiller hipoplasia. Analysis of the predistraction and postdistraction cephalometric radiographs revealed significant skeletal maxillary advancement. The patient had correction of the maxillary hypoplasia with positive skeletal convexity and dental overjet after maxillary distraction. The morbidity for the procedure was minimal. Surgical and orthodontic procedures are thoroughly described

PP 276 MAXILLARy IMPACTED CANINE WITh CONGENITALLy ABSENT PREMOLARS: A CASE REPORT Authors Zehra Ileri, Ilhan Ramoglu, Yasar Bedii Goyenc Selcuk University, Konya, Turkey Aim: The aim of this study was to present a patient who have almost horizontally impacted maxillary canines in addition to congenitally absent maxillary second premolars treated by fixed appliance without surgically uncovering procedure. Subject and methods: The patient was a 10,8 years old female with impacted maxillary canines and agenesis of two maxillary second premolars. The molar relationships were Class II while the canine relationships were Class I with the lower midline was deviated. Maxillary deciduous canines were present. Right maxillary permanent canine was almost in horizontally position. One of the maxillary first premolars was erupted with mesiobuccal rotation and in nonocclusion. The orthodontic treatment was performed using 0.018*0.025 inch preadjusted multibracket appliances. The goal of the phase-I treatment was to level the arches and provide adequate space for canines. Phase-II treatment was done to bring the impacted maxillary canines into the dental arch. So, deciduous canines extracted and waited for spontaneous eruptions of canines without any intervention. On the twelfth month, right maxillary permanent canine moved in a vertically position. After eruption of canines, all teeth were bonded. On the completion of fixed appliance therapy, the upper and lower dental arches were co-ordinated. The total treatment process was 3 years seven months.

PP 275 MAXILLARy ADVANCEMENT WITh DISTRACTION OSTEOGENESIS USING A RIGID EXTERNAL DISTRACTION DEVICE IN CLEfT LIP AND PALATE WITh MAXILLARy hyPOPLASIA: CASE REPORT: Authors DDS. PhD. F. Erhan Ozdiler, DDS Nazile Machmout Kechagia Ankara University Faculty of Dentistry Department Of Orthodontics, Ankara, Turkey

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Conclusion: Early diagnosis of tooth agenesis and canine impaction allows the orthodontist to present multiple treatment options to the patient but a careful clinical observation is necessary for spontaneous eruption.

The aim of the study was to examine presence and frequency of orthodontic malocclusions in students on final year on University of Dentistry in Belgrade. Research included 40 male and 134 female students, age range from 24 to 39 years, average 26 years. All students were asked about their history of wearing orthodontic appliances before or during examination. Each of them was photographed and passed intraoral examination. This examination was based on Index of Orthodontic Treatment Need (IOTN) which consists of aesthetic component (AC) and the dental health component (DHC). Aesthetic component was result of subjective measurement. The dental health component was result of different parameters that included lip competency, overjet and overbite measurements, displacement of contact points, presence of impacted teeth and type of posterior crossbite. According to aesthetic component, 89.65 % (156 students) had need for orthodontic treatment, 8.62% (15 students) had borderline need and 1.72% (3 students) needed treatment. As far as dental health component, 9.77% (17 students) had no need for treatment, 78.73% (137 students) had borderline need and 11.49% (20 students) needed orthodontic treatment. Aesthetic component is found to be much more subjective than dental health component which is more reliable for determination of need for orthodontic therapy. Even at the final year of their studies, most of students have great need for orthodontic treatment, despite of the fact that almost 40% of them were treated before.

PP 277 MAXILLARy PREMOLAR EXTRACTION IN CLASS III PRESURGICAL ORThODONTIC TREATMENT TO CORRECT MILD PROBLEM Of MAXILLA Authors Ajshe Rexhepi, Azem Ismani, Sevdi Rexhepi, Ferija Sali, Blerim Mehmeti Dental clinical centre "Sv. Pantelejmon" Skopje, Macedonia A patient diagnosed with severe skeletal Class III, often has maxillary deficiency, proiclinated maxillary incisors and crowding,... etc is the reason for orthodontic treatment and orthognatic surgery. The extraction of premolars had been indicated to enhance esthetics and correct in incongruent arch widths,before surgical treatment. The aim of this study was to compare arch widths changesand tooth movements between maxillary premolar extraction and nonextraction patients. Maxillary premolar extraction ispreferable easily to correct: incisor retraction, posterior palatal crown inclination and mesialangulation, arch length changes which are more easily correct flared posterior teeth. Material and Methods: pretreatment and post treatment of 10 class III patients (4 nonextraction and 6 extraction) where done orthodontic ­ surgical treatment we included in our study.The changes in maxillary and mandibulary dental arch widths were measured from the canines to the second molars. Results: the analyses showed that arch widths changes could be interpreted as the result of inclination changes in posterior dentition.The arch ­ width change showed that: the premolar extraction group patients the change was significantly greater than the nonextraction group patients. Conclusion: this study focused that the bouth orthodontist and surgeon make a good presurgical orthonditc plan, and indication for maxillary premolar extraction to correct mild transverse problems of the maxilla.

Poster Presentaions

PP 279 NOONAN SyNDROME: A CASE REPORT Authors Muhammet Emrah Emral, Okan Akcam Ankara University, Turkey Cranio-dento-facial findings in a case of Noonan syndrome in a 13-year, 3-month-old male are reported. Oral examination of the patient revealed a narrow, high arched palate, malocclusion and congenitally missing teeth. Even though cephalometric measurements showed an increased vertical facial pattern (GoGn/SN=38,46°), a severe deep bite (9 mm) was evident. Noonan syndrome is characterized by ocular, facial, cardiac, and dental anomalies, although it is often unrecognized by clinicians. Although differential diagnosis of this syndrome is difficult, the cranio-dento-facial structures show specific findings that can be diagnosed by a dental specialist. The present report describes a new case of this syndrome from a dental viewpoint.

PP 278 NEED fOR ORThODONTIC MALLOCCLUSIONS TREATMENT IN STUDENTS ON fINAL yEAR ON UNIVERSITy Of DENTISTRy IN BELGRADE Authors Tijana Z. Vulicevcic, Zeljko B. Milosavljevic, Predrag V. Nikolic School of Dentistry, Orthodontic department, Belgrade, Serbia

PP 280 ORThODONTIC AND AESThETIC REhABILATION Of A CASE WITh BRUXISM (CASE REPORT) Authors Vergjini Mulo, Koco Gjilo, Fatmir Lelaj

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Faculty of Medicine, Stomatological Department, Tirana, Albania Bruxism is grinding of the teeth, typically accompanied by clenching of the jaw. It is an oral parafunctional activity that occours to some extent in many humans. Our case, B.L 22 old age with bruxism, presented some signs and symptoms of this grinding:1.excessive anterior teeth wear, tooth sensitivity, muscle pain and headache, TMJ pain. TMJ signs were increasing with age.During clinical examination it was evident the presence of deep bite occlusion that had lead to clenching joint compression. Also during lateral movement of the mandible, it was the absence of canine guidance, meanwhile it was present a premature contact at the second mandibular molar in the working side. At first it was applied splint therapy, that significantly for a short period reduced muscles activity and pain. After 3 months, frontal teeth were reconstructed, making the patient to be quite and with beaty smile.

PP 282 ORThODONTIC PATIENTS AND ThE ORAL hyGIENE Authors Rozela Rroco, Lindita Xhemnica, Celiana Toti, Virgjini Mulo, Milton Rroco, Albania Faculty of Medicine, Department of Odontoiatry, Tirana, Albania Orthodontic treatment consist of a long period of cooperation between patient and the orthodontic doctor. Patient should be motivate and have a clear vision of the objectives to be achieved and range of cooperation in orthodontic therapy. It was aim of pour study defining the oral hygiene in children having orthodontic appliances, compared with a control group, through indexes like: buffering capacity, microbe load in the saliva of lactobacillus, S.mutans and bacterial plaque. Material and method: It was performed a study with 60 patients. A group of 30 children as a control group and a group of 30 children with anomalies, were 20 removable orthodontic appliances and 10 with fixed orthodontic appliances. children age was 9-17 years old. Results: From the data is resulting that children treated with fixed orthodontic appliances and removable orthodontic appliances appear to have significant changes compared with the control group. Conclusion: It is important that the patient under orthodontic treatment know tools and methods of the oral hygiene.

Authors Akcam M. Okan Ankara University, Faculty of Dentistry, Department of Orthodontics, Ankara, Turkey In the recent years there is an increase in digital technology to be involved in orthodontics. Orthodontic expert systems are based on the logic that a lot of patient data is asessed by the help of computer programs and a treatment plan is presented to the clinician. Thus, the aim of this study was to investigate the orthodontic expert systems generated up to date. A pubmed search and meta-analysis of the literature on expert system designs for medical, dental and orthodontic applications was managed using various key words. A total of 28 studies were recorded from 1987 to 2008 by PubMed search with the keywords "Expert System, Orthodontics" and 21 studies with keywords "Orthodontic Expert System". The number of studies between 1971-2008 with `Artificial intelligence' topic was; 1290 Medical, 184 Dental and 18 Orthodontic, with `Expert Systems' topic was 1290 Medical, 64 Dental and 18 Orthodontic. Although the orthodontic expert systems have obvious advantages, the usage of expert systems is not so high, because, they have some limitations that still to be improved and also there is a lack of information in the world literature on this subject, particularly regarding the orthodontic field. Most recently developed orthodontic expert systems has been presented, which provide improved properties and clinical benefits particularly for the inexperienced clinicians.

PP 283 ORThODONTIC TREATMENT Of fORCED PROGENIC BITE Authors Jasminka Andjelic Health Center Tivat, Tivat, Montenegro Introduction: Forced progenic bite is characterized by reverse overlap of all incisors or incisors and canines. In order to make the diagnosis the possibility of incisal contact should exist. Some of the front antagonists come into a contact before the others and in order to have central occlusion it is necessary for mandible to move forward. Because of that those patients have habitual occlusion instead of central occlusion. The aim of this study is to present the results of treatment of the female patient with forced progenic bite. She was treated with the combination of fixed and removable orthodontic appliances. Method: Female patient, aged 25 was treated for 16 months. Teleradiographic and orthopantomography images were made, anamnesis was taken and dental impressions for study models were made. On the basis of clinical examination, analysis of study models and teleradiographic and orthopantomography images the diagnosis was made: Angle Class I maxillar normognatism and mild mandibular prognatism, retrusion of upper incisors and protrusion of lower incisors, horizontal face growth, anterior rotation of mandible, reduced anterior face height.

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PP 281 ORThODONTIC EXPERT SySTEMS

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Etiology: Hereditary changes in the face profile: mild protrusion of mandible and chin but only in the position of centralhabitual occlusion. The patient's father has more prominent changes of the face so it is probably the case of true mandibular prognatism. All of these indicate that the anomaly is due to the same etiology but in different degree. Treatment plan: In the first phase upper fixed appliances and lower removable orthodontic appliances were used with reciprocal lateral bite plane. In the second phase lower fixed appliance was placed in order to use intermaxillar force. Results: Normal overlap of incisors with normal horizontal and vertical step was achieved. After the treatment had been completed the change of face profile was obvious: from mandible and chin protrusion to fully normal position and appearance of face profile. The complete functional and esthetic rehabilitation of the patient was achieved. Conclusion: Satisfactory results and changes in face profile and appearance can be achieved by making diagnosis and timely treatment.

In group A 70% of the subjects displayed a normal angle while 30% had increased values. Conclusions: A statistically significant correlation was observed between the sphenoid angle and the skeletal anomaly type, demonstrating once more that upper and lower jaws growth is related to the growth of the cranium bones. The observation of eventual changes at the cranium base level is of considerable importance for choosing the therapeutic approach and for the orthodontic retention.

PP 285 PREVALENCE Of ORThODONTIC OCLUSSAL ASyMMETRIES Authors Daniela Anistoroaei, Georgeta Zegan, Loredana Golovcencu University of Medicine and Pharmacy "Gr. T. Popa", Iasi, Romania Epidemiological studies of the occlusal status of the Romanian population do not include the prevalence of orthodontic asymmetries. To estimate the magnitude of dental asymmetries the retrospective data from patients who asked for treatment in the Department of Orthodontics and Dentofacial Orthopaedics, Iasi "Gr. T. Popa" University were analyzed. An analysis of orthodontic records of 384 patients (mean age 10, 11) with no history of orthodontic treatment provided prevalence data for the study. Sagittal molar asymmetry was found in 24, 7% patients, sagittal canine asymmetry in 22, 66% of the children, laterodeviation were found 28, 6%, 20,7% of orthodontic patients had midline deviation from facial midline and 8,3% of patients had posterior cross-bite. Several clinically relevant correlations were found between the examined dentofacial characteristics. These findings are meaningful for clinicians because asymmetry must be identified and planned for prior to initiating treatment.

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PP 284 PARTICULARITIES Of ThE CRANIAL BASE DEVELOPMENT IN CLASS III ANOMALIES Authors Manuela Popescu, Olivia Popoviciu, Oana Eftene, Irina Beuran Dept. of Orthodontics and Dento - Facial Orthopedics, University of Medicine and Pharmacy "Carol Davila", Bucharest, Romania Introduction: The skeletal development and the upper / lower jaw relations are the result not only of their intrinsic growth, but also of the growth pattern of the cranium and face bones. Of these, the cranium base, due to the sphenoidoccipital synchondrosis, has a decisive role in the formation of the lower part of the face. A decreased sphenoid angle will favour the anterior positioning of the mandible (skeletal class III anomalies) and an increased sphenoid angle will favour a posterior positioning of the mandible (skeletal class II anomaly). We intended to perform a comparative study on the cranium base development, revealed by the NSBa angle value, and the mandibular dimensional characteristics in skeletal class III anomalies. Materials and method: We selected two samples of patients aged 11-15 years: - group A 30 patients, skeletal class III - group B 15 patients, dental and skeletal class I - control group. A comparative study on the lateral cephalograms taken at treatment start was conducted, within each group and comparatively between the two groups, investigating the following parameters: BSBa angle, mandibular angle, SNB, SNA, ANB, Cf-Go, Go-Ar, Go-Me, Co-Go. Results: It was observed the wide variation of sphenoid angle values, within each study group and between the two groups.

PP 286 RAPID CANINE DISTALIZATION: A CASE REPORT Authors Yilmaz F, Karacayli U, Olmez H, Gokce S M, Karacay S Gulhane Military Medical Academy, Ankara, Turkey Introduction: Rapid canine distalization is a technique involving periodontal ligament distraction. The primary aim of this technique is to distalize the canines without anchorage loss and to shorten the duration of orthodontic treatment. Purpose: The aim of this case report is to present rapid canine distalization of an adult patient through periodontal ligament distraction. Material and method: Intraoral and extraoral examination of a 21-year-old patient revealed a bilateral Class II canine and

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molar relationship with excessive overjet, and convex profile. Camouflage treatment was planned with the extraction of upper first premolars. The molar relationship was Class II before treatment, so maximum anchorage was required for protection. To provide maximum anchorage and to reduce the treatment period, rapid canine distalization through distraction of the periodontal ligament was planned and tooth born distractors were reconstructed at our department. After the first premolar extraction, a vertical osteotomy was performed in the buccal and lingual interseptal bone between the canine and first premolar teeth. These vertical osteotomies were connected with an oblique osteotomy extending toward the base of the interseptal bone to weaken the resistance. The distractor was activated 0.5 mm/day and Class I canine relationship was attained within 20 days. The patient was closely monitored by periapical radiographs and no apical root resorption was observed on apex of canines. Conclusions: Rapid canine distalization through periodontal ligament distraction is a new technique that shortens the treatment period and provides maximum anchorage during canine distalization.

appliance therapy for final detailing.X-ray showed an expanded palate with the intact suture and minimal tipping. Conclusion: NPE 2; exercises a constant and continuos force and it's action appear more physilogical than that induced by devices made of stainless steel alloys;placed at the chair,without laboratory procedures;no sever suture splitting;rotates molars buccaly or distally;less patient discomfort.

PP 288 SUPERNUMERARy TEETh IN MANDIBULAR INCISOR REGION: REPORT Of ThREE CASES Authors Mihri Amasyali*, Seniz Karacay**, Derya Akkurt* *GMMA, Center of Dental Sciences, Dept. of Orthodontics, Ankara, Turkey **GMMA, Center of Dental Sciences, Dept. of Orthodontics, Istanbul, Turkey Introduction: Supernumerary tooth is a term used to describe more than the normal number of a full complement of teeth in either the primary or permanent dentitions. Purpose: The purpose of this case report is to present different treatment strategies of three patients with supernumerary tooth in mandibular incisor region. Material methods: The first patient among three cases was a 9-years-old patient referred to department of pedodontics with a chief complaint of caries. Intraoral examination revealed six incisors in mandibular arch. One of the supernumerary incisor teeth was located in the dental arch. Other supernumerary tooth was located lingually. Treatment plan was extraction of two supernumerary teeth. Orthodontic treatment was necessary. The second case was 9-years-old patient whose chief complaint was irregularities of mandibular incisors. Five incisors were diagnosed in mandible. The supernumerary incisor tooth was located out of the dental arch. Treatment plan was extraction of supernumerary tooth. Orthodontic treatment wasn't necessary and the patient was re-called with 6 months intervals. The last case was a 9-years-old patient who was diagnosed with five incisors during routine examination. Supernumerary incisor tooth was located in the dental arch. There wasn't crowding but right deciduous canine was in cross-bite and right lateral incisor was in teeth a teeth position. The orthodontic treatment was planed without extraction of supernumerary teeth. Conclusion: Since supernumerary teeth are generally asymptomatic, they are usually diagnosed during clinical or radiological investigations. Treatment approach must be planned according to the requirements of the patients.

PP 287 SLOW MAXILLARy EXPANSION WITh NICKEL TITANIUM PALATAL EXPANDER.CASE PRESENTATIONS Authors Ass. Dr. Bratu Dana Cristina*,Ass. Dr. Ogodescu Alexandru*, Prof. Bratu Elisabeta*,Dr. Moise Marcel, Dr. Ivanova Yana *Department of Paedodontics and Orthodontics,Faculty of Dentistry Timisoara, Romania Key words: slow maxillary expansion,nitanium palatal expander(NPE 2),transversal discrepancies Introduction: Maxillary expansion treatments have been used for more than a century to correct maxillary transversal discrepancies. Three expansion treatment modalities are used today ;rapid maxillary expansion(RME),slow maxillary expansion(SME) and surgically maxillary expansion.Correcting of transverse discrepancies usually requires expansion of the palate by a combination of orthopedic and orthodontic tooth movements.For SME the only 10 to 20 newtons of force should be applied to the maxillary region,depending on the age of patient.A nickel-titanium alloy device(NPE 2) is recently been made available to induce slow expansion.The action of the NPE2 is possible by harnessing nickel-titanium's properties of shape memory and transition temperature (94 F degrees). Materials and Methods: Two patients are presented, age 13 and 18 years,permanent dentition,maxillary constriction and mesially rotated maxillary first molars.Measuring the arch as indicated a need for 4 mm of palatal expansion and size 32 and 36 NPE 2. Results: The desired expansion was achived in less than 4 months and the appliance was left in place for another 3 month of retention,after both patients were scheduled for full fixed

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PP 289 ThE fREQUENCy Of hyPERDONTIA IN PERMANENT TEETh IN PODGORICAS\' ChILDREN Authors Muratovic Ivana, Vujanovic Dijana Clinical Centre of Montenegro, Niksic, Montenegro

PP 291 The Incidence of Vicious habits in a Today\'s Preschool Environment Authors Ozana Alexandrescu, Elina Teodorescu, Ecaterina Ionescu, Viorica Milicescu, Dragos Paduraru Pantea Faculty of Dental Medicine, Bucharest, Romania

Introduction: The aim of this study was to show the frequency of hyperdontia in school children from Podgorica. Methods: This study was conducted in December 2008, on Stomatology Policlinic of Clinical Centre of Montenegro in Podgorica. A population of three hundred school children, orthodontic patients, between 12 and 15 years of age, were included in the study. The existing panoramic radiographs were used for the informations about supernumerary teeth. Results: Six of hole children were detected with the supernumerary teeth, which is 2%. Most hyperdontic teeth were lateral incisors, and in five of six cases, the most hyperdontic teeth were lateral incisors in upper jaw.

Vicious habits are a main factor in producing dento-maxillary anomalies. Later diagnosed and without unconditioning produces important disorders of the maxillary, which will require complex treatments. These vicious habits can be classified as follows: - abnormal positions of the body and the head during sleep or while being awake - insertion at the dental arcade level of some segments not belonging to the dento-maxilar area. - insertion of some soft parts of the dento-maxillary system. - triggering of potentially negative forces during some paranormal functions: oral breathing, infantile deglutition, mastication disorders, phonation disorders. The present study was conducted on a group of kindergarten children with ages between 4 and 7. The clinical exam revealed the fact that out of 72 subjects, 59 (82%) display vicious habits or cavity lesions in the Korkhaus sustaining areas, problems which can induce dento-maxillary anomalies, but which can benefit of an effective treatment if diagnosed at the right moment. Another important issue regards the cases involving cavities on the temporary teething, especially those in the sustaining areas, because lots of parents and even many dentists have the wrong belief that temporary teeth should not be treated. Improperly treated, these cavity lesions have major implications on dental health. Lateral teeth from the Korkhaus sustaining areas maintain this space in sagital way as well as in a vertical way for successional teeth. Early loss of the sustaining areas has severe consequences on dental alignment, space reduction, especially for the last teeth erupted on the arcade. The main objective of this study was to emphasize the importance of unconditioning vicious habits and of the timely effective discovery of the maxillary anomalies. It was noticed a strong relationship between the time of finding out these anomalies and their stage of development. An essential role is played by dental specialists working in a preschool or school environment because they can develop awareness among parents with regard to the consequences of not treating these anomalies on the right time.

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PP 290 ThE fREQUENCy Of hyPODONTIA Of PERMANENT TEETh AT ChILDREN fROM PODGORICA Authors Vujanovic Dijana, Muratovic Ivana Clinical Centre of Montenegro, Niksic, Montenegro Aim: The aim of the research was to establish the frequency of hypodontia of permanent teeth at children of school age of Podgorica. Method: The research was carried out in December, 2008 on the section for Jaw Orthopedics on the Dentistry Policlinic at the Clinical Centre of Montenegro in Podgorica. There were 400 children, age from 10 to 15, included in this study. The registration of missing teeth was done by analyzing the orthopantomographic X-ray pictures of each patient. The missing tooth was marked with number, jaw marked and quadrant in wich is the missing tooth was marked too. Results: Inspecting 400 children, the hypodontia was found at 106 children, on which is 26.5 per cent. The total number of the missing teeth in the taken sample was 158. Conclusion: The result of the research shows that the hypodontia isn't rare. In entire number of the missing teeth the most frequent are the third molars, the second premolars and lateral incisors.

PP 292 ThE LENGTh OfThE MANDIBLE'S CORPUS AND PROPORTION TO ThE LENGTh Of ThE fRONT CRANIAL BASE IN ChILDREN WITh SKELETAL CLASS III Authors Stojanovic Zdenka, Milic Jasmina

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Military Medical Academy, Beograd, Faculty of Stomatology Pancevo, Serbia The purpose of this research is to examine if children with mixed dentition and existed skeletal class III (ANB<2 degrees) have different length of the mandible in relation to the children of the same age with skeletal class I (ANB=2 degrees) and if there is any difference in proportional relation of the length of the mandible and the length of the front cranial base in these patients. The following research was undertaken: there were two groups of patients with mixed dentition; group 1, 30 patients aged from 6 to 12, and skeletal class III (ANB <2 degrees); group 2, 30 patients aged from 6 to 12 and skeletal class I (ANB=2 degrees). The length of the mandible's corpus (Pg*Go) is a linear parameter which represents distance from projection of the point Pg on the mandible's plane to the point Go. In the 1st group the length of the Pg*Go moved from 70-83mm, on average 75,30mm and in the 2nd group the length of the Pg*Go moved from 66-83mm, on average 75,57mm, without statistically significant difference among the patients with III and I skeletal class. It is considered that normal relation of the length of the mandible's corpus (Pg*Go) to the length of the front cranial base (SN) is 1,05, that means that Pg*Go represents 21/20 of the length of SN. In the first group of patients this relation was 0,91-1,19 on average 1,04 and in the second group 0,92-1,18 on average 1,03.The results of the Post Hoc Test have shown that there isn't significant difference in relation of Pg*Go to SN. In conclusion we can state that concerning proportional relation of the mandible's corpus and the front cranial base we haven't found any differences between these two groups of patients: the group of patients aged 6-12 with skeletal class III and the group of the same age with skeletal class I.

Manner and tools treatment have been combined by fix­ moving orthodontic apparatus, as well as by fix bridge. The treatment results shown that the combined method applied in exact moment avoid such kind of skeletal problems. Key words: sagital plan, maxilla ­ mandible, prosthetic treatment, fix apparatus.

PP 294 ThE PERIODONTAL STATUS Of BANDED VERSUS BONDED MOLARS DURING ThE fIXED ORThODONTIC TREATMENT Of ADULTS WITh PERIODONTAL DISEASE AND MALOCCLUSIONS Authors Alexandru Ogodescu, Stefan Stratul, Emilia Ogodescu, Cristina Bratu, Darian Rusu, Florica Glavan, Elisabeta Bratu School Of Dentistry, University Of Medicine And Pharmacy "Victor Babes" Timisoara, Romania Introduction: The interface between molar enamel, band and the marginal gingiva is still a sensible region for the oral health during the fixed orthodontic treatment. The development of adhesive systems facilitates the replacement of the molar bands with bonded vestibular tubes. Purpose: To investigate the periodontal status around molars with bands and bonded tubes before, during and after the fixed orthodontic treatment of adults with periodontal disease and malocclusions. Material and method: We performed a longitudinal study comparing the periodontal health indexes (Plaque Index, Gingival Index, Bleeding Tendency, Pocket Depth and Loss of Attachment) of 24 adult patients with periodontal disease treated with fixed orthodontic appliances in our Department. One examiner assessed at three sites on the vestibular side of the molar and on one on the palatinal side the above mentioned indexes. The assessments were made before the periodontal therapy, prior to the application of the fixed orthodontic appliance, at intervals of 3 month during the treatment, at the removal of the appliance, 3 and 6 month after, in the retention period. Results: Although they were no significant differences in gingival inflammation after the periodontal therapy at the visits during the active orthodontic treatment and also at the first visit in the retention phase the banded molars showed significantly (p<0.05) greater plaque accumulation and gingival inflammation than did bonded molars. Conclusions: Especially in adult patients with periodontal disease and malocclusions, that need low forces, it is advisable to use bonded vestibular tubes instead of molar bands.

PP 293 ThE PAThOLOGICAL OCCLUSION AND ThEIR ORThODONTIC ­ ORThOPAEDIC MANAGEMENT Authors Alketa Qafmolla, Virgjine Mulo, Ruzhdie Qafmolla Faculty of Medicine, Department of Stomatology, Tirana, Albania In clinical practice, we have investigated the patients with skeletal problems in three plans: sagital, transversal and vertical with deep overbite, open bite, cross bite, prognathia or retrognathia of mandible or maxilla etc., which enquire the important orthodontic ­ prosthetic management. Since the time that patients are presented during that period, when the biological growth has not finished, the skeletal problems are managed by orthodontic treatment. While, for adults, when the biological growth has finished already, then these problems are managed by prosthetic treatment. The aim of our study is that such occlusions to be treated by orthodontic ­ prosthetic combination. Are examined and treated 119 patients, 12-37 years old during two successive years, with prognathia and progeny etc.

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PP 295 ThE ShAPE Of MAXILLARy ALVEOLAR ARCh IN ALBANIAN SUBjECT Authors Nikollaq Leka, Sofika Qamirani, Ruzhdie Qafmolla, Fatmir Bilaj, Klodiana Leka, Klodian Shahu University Hospital Centre "Mother Theresa", Tirana, Albania There have been a lot of ways to describe various types of the human alveolar arch. Some times it is considered to be catenary's curve; other times a parabolic curve, elliptical curve or hyperbolic curve. Sophisticated mathematical function to accurately describe the dental arch form proposed, but they are not commonly and easily used. The present study is done in 120 adult subject that have done a magnetic resonance imagining of head (the indication and the result of examination was not related to orofacial region), during the period September ­ December 2008 in UHC of Tirana. The slices of maxillary alveolar arch, with complete alveolar sockets were selected, and its form was classified as elliptic, round, U-shape or V-shape (based at Thompson classification). The results showed no significant differences between males and females. Specifically, 75% of cases was considered to be elliptic shape, 1,7% to be round shape, 15% to be U-shape and 7,5% to be V-shape. Other authors have also found the elliptic shape to be the most frequent and the round shape the less frequent; percentage values are however different. This is first study related to our subjects and further investigation concerning size, data are needed. Key words: elliptical, hyperbolic, parabolic curves; alveolar arch; magnetic imagining

link between the therapeutical results and the diagnosis of the malocclusions, the treatment chosen to be carried out, the type of the orthodontic applience and the type of the surgicalorthodontic treatment used. The Fisher test applied on the ortodontic treatment, the diagnosis Class and the therapeutical results proved to be significant in the statistics (p<0,05). The prevalence's results of the malocclusions are comparable with the ones from the specialty literature, but they are specific to the geographic region. The therapeutic obtained results refer to the population which attended the public orthodontic health service provided by the Home Health Insurance.

PP 297 ThE ThIRD MOLAR-COULD hELP US OR NOT - IN MALOCCLUSIONS Authors Ozana Alexandrescu, Elena Gabriela Despa, Dragos Paduraru Pantea, Gabriela Moise Titu Maiorescu University, Bucharest, Romania The role of the third molar in malocclusions is a controversal subject among the dentists.It has a large diversity of manifestations: -could has a normal evolution and not disturbing the stomatognatic system -could be an etiological agent for malocclusions -could be an agravating agent -or a needful factor for obtaining a normal occlusion It can not be adopted a general rule regarding the attitude concerning the third molars.They have to be controled around the age of 14-17 years old,when both mandible\'s growth and the crown calcification are almost complete,and permit a good evaluation of the available space. The eficient interception of the third molars during their growth could prevent the instalment or agravation of malocclusion and crowding.

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PP 296 ThE STUDy Of MALOCCLUSIONS Authors Georgeta Zegan, Daniela Anistoroaei, Mavru Radu Bogdan University of Medicine and Pharmacy "Gr. T. Popa", Iasi, Romania The aim of this study is to achieve a statistical evaluation on a consignment of patients who asked for orthodontic treatment in our department between the years 1990 - 2000. The study has been performed on 375 patients (157 boys and 218 girls) aged between 4-24 years, with malocclusions. The data base was created with Excel and statistical evaluation was completed in SPSS 15 software, using descriptive statistics, bivalent correlations and linear regression. The Patients in need of orthodontic treatment presented malocclusion Class I 63,2%, Class II 28,3% and Class III 5,8%. The cause of the malocclusion was determined by general factors 18,7%, disfunctional 28,5% and local 52,8%. Based on age, the patients were applied with prophylactic treatment 3%, interceptive treatment 5% and curative 92%. The Pearson corelations made on the consigment of patients prooved the existence of a directly proportional

PP 298 ThE TOTAL LENGTh Of ThE MANDIBLE AND PROPORTION TO ThE TOTAL LENGTh Of ThE CRANIAL BASE IN ChILDREN WITh SKELETAL CLASS III Authors Milic Jasmina, Stojanovic Zdenka Faculty of Stomatology Pancevo, Military Medical Academy, Beograd, Serbia In the previous research we have come to this conclusion: there is neither significant difference in the length of the mandible nor in the proportional relation of the mandible and the front cranial base between these two groups of the patients that is of the groups with the mixed dentition, aged 6-12, with existed skeletal class III (ANB<2 degrees), 30 patients and skeletal class I (ANB=2 degree).We also measured the total length of the

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mandible (CdGn) and its proportion with the total cranial base (NBa). In the first group the length moved from 105-127mm, on average 116,77mm and in the second group 106-127mm, on average 116,13mm. Although the total length of the mandible in patients with skeletal class III was on average slightly bigger than in patients with skeletal class I, difference was not statistically significant. In the first group proportion of CdGn/NBa was 0,99-1,16 on average 1,09 and in the second group 0,97-1,15 on average 1,07. The results of the Post Hoc Test showed that there was statistically high significant difference (p<0,01) in relation of the total length of the mandible to the total length of the cranial base in the first and second group of patients. In conclusion we can state that the total length of the mandible was higher in relation to the total length of the cranial base in the group of patients with skeletal class III than in the group with skeletal class I, where this relation was more coordinated.

PP 300 TREATMENT Of MANDIBULAR RETROGNAThISM By TWINBLOCK APPLIANCE: A CASE REPORT Authors Suleyman Khalil, Okan Akcam Ankara University, Ankara, Turkey Functional treatment is one of the most effective treatment methods for the correction of skeletal deviations of individuals who has a growth potential. When Class II deep-bite is treated in late growth period with molar extrusion, relapse commonly occurs under masticatory pressure. However, as the early treatment provides better muscular adaptation, relapse risk decreases, in individuals with a deep-bite. Our patient was a girl who had a 10 year 1 month years old chronological and 10 year 6 month skeletal age and in MP3= period according to hand wrist film. In the clinical examination a convex profile, Class II molar and canine relationship and a traumatic deep-bite was recorded. Overbite and overjet were 9 mm and 5 mm respectively. Freeway space was 2 mm. In radiological examination it was observed that she was in mixed dentition. Maxillary and mandibular dental arch crowdings were 0 mm and 3.5 mm, respectively The twin-block appliance was applied for the correction of mandibular retrognathism. Twin-block treatment phase was 10 months. After functional treatment phase the patient underwent fixed Edgewise orthodontic treatment. The fixed orthodontic treatment phase was 8 months. By the combination of the functional treatment with twin-block appliance and fixed orthodontic treatment an ideal maxillomandibular relationship, normal overbite and overjet and a harmonious profile were achieved.

PP 299 ThREE-DIMENSIONAL TOOTh CROWN SIZE IN CLEfT LIP AND PALATE PATIENTS Authors Berna Ozdemir Ozel, M. Okan Akcam, T.Ufuk Toygar Memikoglu, Levent Ozer University of Ankara, Faculty of Dentistry, Department of Orthodontics, Turkey Aim: The aim of this study has to three-dimensional (3D) tooth crown sizes in a group of cleft lip and palate (CLP) patients and compare them with those of a Class I control group. Material and method: Study models of 72 CLP individuals [20 bilateral (BCLP), 34 unilateral left (ULCLP), 18 unilateral right (URCLP) and 53 Class I adolescents in the ermanent dentition stage. Mesio-distal (MD), labio-lingual (LL) and occluso-gingival (OG) measurements were recorded by the same examiner using a digital calliper. Statistical analysis was conducted, including repeatability, analysis of variance (ANOVA), and Duncan's tests. Results: Upper and lower premolar MD dimensions were larger in the CLP groups than in the control group. The smallest MD dimensions were those of the upper right lateral incisors in the BCLP group (P < 0.05). The upper left lateral incisor MD dimensions in the ULCLP group were smaller when compared with the other CLP groups (P < 0.001). In general, all LL and OG measurements were smaller in the CLP groups than in the Class I group in both the upper and lower dental arches. In general, MD, LL and OG dimensions of CLP individuals were smaller than those of Class I individuals, not only in the affected upper dental arch, but also in the lower dental arch.Variations in 3D tooth dimensions were found among the CLP types (BCLP, ULCLP and URCLP). The lateral incisor in the cleft region was the most reduced in size. Conclusion: A 3D tooth-size assessment should be involved in the diagnostic records in order to determine a favorable treatment planning and ideal occlusion in CLP patients.

PP 301 TREATMENT Of SKELETAL AND DENTAL MANDIBULAR ASyMMETRy WITh UNILATERAL CONDyLAR hyPOPLASIA: CASE REPORT Authors DDS. PhD. F. Erhan Ozdiler, DDS. Pinar Demir, DDS. Nazile Machmout Kechagia Ankara University, Faculty of Dentistry, Department of Orthodontics, Turkey The mandibular laterodeviation is one of the most evident malformations of the face, because it alters the lower third of the face. Etiologically it can be classified into: Static laterodeviations caused by teeth; caused by skeleton change: by monolateral hypertrophy (condyle, condyle and neck of the condyle, half mandible hypertrophy); by monolateral hypertrophy (congenital pathological); Dinamic laterodeviations functional. In the author's opinion the orthognathic surgery is absolutely necessary for adult dental laterodeviation already stabilized. The skeletal laterodeviation must always be treated by orthognathic surgery. This case report describes the orthodontic and orthognathic treatment of a 18-year-old woman who had a Class III molar

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relationship, the asymmetrical position of the mandible in that patient can result in asymmetrical condylar heights. Posteroanterior radiographs and MR imaging of mandible condyle were used to evaluate lower face and mandibular asymmetry. Mandibular dental midline, the menton, and the antegonion toward the affected side. MR imaging revealed decreased condylar height in the affected side. After treatment, dental and facial aesthetics were improved by treatment of deep overbite, correction of the dental and skeletal asymmetry, and closure of the mandibular plane.

patients were found to be effected after orthodontic treatment. The incidence and severity of the white spot lesions are related to the duration of the teeth that had braces and preventive measures are important during the treatment period. The purpose of this review is to present information about the formation, diagnosis, incidence and treatment of white spot lesions and to reveal its role and importance in orthodontics.

PP 304 jAW TRAUMA COMPLICATION IN A ThIRTEEN yEAR OLD SChOOL BOy, ThERAPy DILEME ­ CASE REPORT PP 302 TWO DIffERENT TREATMENT MODALITIES USED IN TWIN PATIENTS Authors Berna Ozdemir Ozel, Ulas Oz, Ayse T. Altug-Atac, F. Erhan Ozdiler University of Ankara, Faculty of Dentistry, Department of Orthodontics, Turkey Ajanovic I, Lacevic A, Trako N Introduction: The patient, 13 years old school boy from the middle part of B&H came to our office with pain and local swelling. During examination and anamnesis we found out that the boy already felt pain before and had sore two times, in the lower incisal region. Lower incisives were intact. PURPOSE Purpose of this case report is to present successful endodontic treatment as a favorite method of treatment in the case of traumatic complication avoiding surgical intervention. Materials and methods: Materials and methods used are: · Clinicalexaminationandtreatment · traumahistoryresearch · X-rayexamination · RVGexamination · endodonticstreatment Conclusion: The fact that the young person has the ability to have new recovered tissue is important in making treatment decision. Avoiding surgical intervention such is apicoectomies in lower incisal region after traumatic complication led to a successful endodontic treatment of 41 31 32 teeth. Conclusion: Importance of the Gorlin syndrome is a presence of jaw cysts potentially malignant. Gorlin syndrome can be found during clinical examination and by family anamnesis, since this rare disease is genetically defined. In this case report presence of jaw cyst around intact teeth, many nevi in the area of a back head, congenital deformation of the hip bone, and positive family anamnesis indicates the presence of the Gorlin syndrome.

Poster Presentaions

Aim: This study is intended to review previous case reports on identical twins treated differently and to demonstrate the effects of two different treatment modalities on a pair of 11-yearold identical twin boys with dental Class III malocclusion and hyperdivergent face type. Subjects and methods: The identical twins had dental Class III malocclusion with significantly increased SN/GoGn angle and negative overjet, although they presented skeletal borderline Class II malocclusion. Twin no 1 was treated by chin cup and mandibular 2 by 4 fixed Edgewise mechanics while; Twin no 2 was treated by face mask. The negative overjet, in both brothers, was eliminated and a significant improvement in facial esthetics and function was achieved. While the mandibular rotation was controlled with an occipital-pull chin cup, posterior mandibular rotation was observed in the face mask treatment protocol. For retention, Twin no 1 is wearing his chin cup 1 and Twin no 2 is wearing his face mask during night time. Results: Twin studies are one of the most important tools to evaluate the interaction between genetic and environmental factors, but growth trends of the twins and their responses to different treatment modalities still carry individuality.

PP 303 WhITE SPOT LESIONS DURING ORThODONTIC TREATMENT Authors Emrah Emral, Burcu Oktay Coven, Okan Akcam Ankara University, Turkey White spot lesions are non-esthetic demineralized regions that may develop during the orthodontic treatment. 2-96% of the

PP 305 A SIXTEEN yEARS EXPERIENCE IN USING PIT AND fISSURE SEALANTS IN ThE DEPARTMENT Of PEDODONTICS IN BUChAREST Authors Samoila Anca Irina MD, Dr Popean Ioana-Cristina "Carol Davila" University of Medicine and Pharmacy, Bucharest, Faculty of Dental Medicine, Romania

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Objective: The aim of this study is to describe the experience of the Department of Pedodontics in Bucharest in the use of different pit and fissure sealants. Materials and methods: This clinical retrospective and descriptive study of 664 sealed teeth, belonging to 248 patients, used the medical records from the existing archive of the Department. For data processing, we used the SPSS program. Results: 16 different sealants were used, 12 resin sealants and 4 glassionomer sealants. 2/3 were applied to children ages 6 to 9 (66.6%), with a peak at the age of 7 (19%). The first permanent molars received 80.4% of all the sealants used. We assumed that if a certain tooth did not receive a new sealing or a filling, the initial sealing was still in place. Therefore, the retention rate was 91.27%, the loss rate was 7.23%, and 1.51% of the teeth had to be filled due to cavities. The follow-up time ranged from less than 5 month (35.4) to 6 - 20 month (40.8%), and more than 20 month (15.5%). Of the total sealants, 0.5% were present after nearly 12 years, but most of them, (90.4%) were present only for 2 years, as we later assessed.During all these 16 years, a variable number of pit and fissure sealants were used, and this practice increased from 0.2 in the early nineties to 23% in 2008. Conclusion: pit and fissure sealing is an efficient tool for cavities control, and is used in Romania on an ever growing scale.

0.94 to 2.09 ppm F in green tea and from 0.01 to 0.03 ppm F in fruit and herbal tea. Conclusions: The results confirm that regular consumption of black and green tea is an important dietary source of fluoride.

PP 307 CARIES PREVALENCE AMONG DEAf-MUTE AND BLIND ChILDREN IN "DEAf-MUTE ChILDREN INSTITUTE" AND `BLIND ChILDREN INSTITUTE" IN TIRANA, ALBANIA. Authors Alketa Qafmolla, Eno Gace, Pjeter Pepa U.F.O-University, Faculty of Stomatology, Tirana, Albania Objective: The aim of this study is to evaluate the caries prevalence in deaf-mute and blind children. Material and Methods: the study comprised 130 children of both institutes (deaf-mute children institute and blind children institute) in Tirana-Albania. It is for the first time the study is being carried out in Albania. The children was separated by sex and age in 4 groups: 6-9, 10-12, 13-14, 15-18 years old. The accumulated data was generated for the dmft and dmfs index. The data was elaborated statistically with SPPS 16 program. Results: By the data management results that 95% of children have caries. The prevalence of caries by sex was 94% for male and 93.8% for female. The dmft index for deciduous teeth is 3,71 and for permanent teeth is 3,87. The dmfs index for first permanent molar according to groups is Gr1 ­ 9,6, GrII ­ 5,5, Gr III ­ 6,7, GrIV ­ 6,8. Prevalence caries according to surface for deciduous teeth is: oclusal caries ­ 52%, proximal caries ­ 45%, vestibular caries ­ 3 %. Prevalence caries according to surface for permanent teeth is: oclusal caries 71,5%, proximal caries ­ 23%, vestibular caries 15,5%. Conclusion: The collected data demonstrate that deaf-mute and blind children have a high caries prevalence and poor oral hygiene. Discussion: This highly alarming situation requires immediate attention. A prevention-based intervention program is recommended for these special groups. Effort must be made to encourage the parents of these children and improve their oral health.

PP 306 ASSESSMENT Of fLUORIDE CONCENTRATION IN SOME TEA BRANDS Authors Maria Kukleva, Nikolai Sharkov, Veselina Kondeva Department of Pediatric Dentistry, Faculty of Dental Medicine, Plovdiv, Bulgaria Department of Pediatric Dentistry, Faculty of Dental Medicine, Sofia, Bulgaria Introduction: The concentration of fluoride in a cup of tea has been the subject of many studies. No such investigations have been carried out in Bulgaria. Purpose The aim of the study is to determine the fluoride levels in some commercial tea brands sold in supermarkets and to evaluate the importance of tea as a dietary source of fluoride. Materials and method: 43 different brands of tea in bags were evaluated: 13 brands of black tea, 10 brands of green tea and 20 brands of fruit and herbal tea. In order to prepare the tea one bag of tea was covered with 200 ml. boiling deionized water for 5 minutes. The measurements were made at a room temperature with an ion-selective electrode ORION 96-09 mounted on an ion-meter ORION Benchtop pH/ISE Meter model 920A, using standard solutions and reagents, obtained also from the ORION Research Inc. Results: Results showed wide differences in fluoride levels in tested brands of tea. The fluoride content was greatest in black tea, 1.20-2.93 ppm F. The fluoride concentration ranged from

PP 308 ChECKUPS MOUThS AND TEETh AT 5 yEARS OLD IN PODGORICA Authors Danijela Avramovic, Mirjana Djurickovic, Stanka Kovijanic, Nina Maric, Biljana Milosevic

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Bajfarm, Podgorica, Faculty of Medicine, Podgorica, Public Health Institution Podgorica, Montenegro Aim: Aim of this paper is to show prevalence of carious teeth and difference in its prevalence at children aged 5 in capital city of Montenegro and its suburb. Method: A cross-sectional study was performed in OctoberNovember 2007.It included the checkups of 1085 5 year old children(305rural and 780 urban areas).For the alaboration of the data oral health indices and statistical test were used. Results: Average number of teeth with caries per examinee for children of this age was DMFT-4.52. Children is urban areas had lower values DMFT-4.31 in relation with children in rural areas DMFT-5,45.Percentage of teeth with caries were higher in rural areas D-94,31% in relation with children in urban areas D-90,12%.As for filled and missed teeth percentage is higher of children in urban areas(F-8,07%,M-1,80%)in relation with children in rural areas(F-4,08%,M-4,08). Conclusion: Children in rural areas have caries more often than children in urban areas and higher percentage filled,teeth with caries has children in urban areas.Importance of nowdays preventive meassures and programs needs to be underlined in order to improve and maintain oral health state.

PP 310 CONCENTRATION LEVEL Of fLUORIDE IN SEVERAL BRANDS Of SOfT DRINKS AND NATURAL jUICES Authors Maria Kukleva, Nikolai Sharkov, Veselina Kondeva Department of Pediatric Dentistry, Faculty of Dental Medicine, Plovdiv, Bulgaria Department of Pediatric Dentistry, Faculty of Dental Medicine, Sofia, Bulgaria Introduction: Few studies have investigated fluoride exposures from soft drinks juices and juice-flavored drinks. Recently there has been a considerable increase in consumption of soft drinks and natural juices in Bulgaria. Purpose To evaluate the concentration of fluoride in commercially available soft drinks and juices and its implication as a risk factor for developing dental fluorosis. Materials and method: The fluoride concentration of a selection of 32 brands of soft drinks and 37 brands of fruit and vegetable juices were investigated. The measurements were made at a room temperature with an ion-selective electrode ORION 9609 mounted on an ion-meter ORION Benchtop pH/ISE Meter model 920A, using standard solutions and reagents, obtained also from the ORION Research Inc. The samples of carbonated soft drinks are assayed for fluoride after decarbonating the drinks. Results: Results indicated that some of these drinks are unacceptable for a child's diet. The fluoride levels of the products ranged from 0.03 ppm to 4.03 ppm F. With no fluoride levels marked on the soft drink products, it is not possible for clinicians or consumers to directly estimate fluoride ingestion from soft drinks. Conclusions: Some soft drinks have high fluoride levels and could be a substantial risk factor for developing dental fluorosis.

Poster Presentaions

PP 309 COMBINED APEXIfICATION AND ORThODONTIC EXTRUSION Of A IMMATURE PERMANENT CENTRAL INCISOR Authors Emine Nalcaci, Ali Osman Mavis Ankara University, Faculty of Dentistry Department of Pedodontics, Turkey Pulp necrosis and the arrest of root formation in young permanent tooth is a frequent seen problem after dental injuries. The purpose of this case report is to present a 9-yearold boy with a crown fracture (enamel+dentin) and intrusion in the upper permanent incisor and emphasize the importance of multidisciplinary management, including combined apexification and orthodontic extrusion.By family dentist of the patient, both of incisors have been restored with composit resin. After 1-month follow-up the patient was admitted to our clinic due to developing fistule on the vestibul of the right incisor tooth. After the clinical examination; access cavity was opened on incisal side instead of palatinal because of rotation and intrusion of injured tooth. Due to difficulty of treatment on incisal side, teeth were braceted and than enumerated succesfully. Treatment of tooth included apexification with the combination calsium-hydroxide (Kalsin) and klorhexidine (Klorhex %0,2). After 1 year follow-up period the tooth was asymtomatic clinically. Hard tissue barrier was clearly seen radiographically and the radiolusent area was completely disappeared. Finally the root canal of the tooth was obturated with gutha-percha points and AH plus paste. Apexification with calsium-hydroxide is the best treatment choise of immature teeth.

PP 311 DENTAL CARIES TREATMENT AND TREATMENT NEED AMONG 7 - 18 yEARS OLD STUDENTS Authors Kondeva V., M. Kukleva, A. Icheva, S. Rimalovska Department of pediatric dentistry, Faculty of dental medicine, Medical university,Plovdiv, Bulgaria Introduction: Dental caries is an important healthcare problem. There is information in literature about its epidemiology and treatment in children and adolescents. Aim: The aim of the study is to investigate dental caries treatment need and materials used for the treatment of dental caries among students from 7 to 18 years of age.

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Poster Presentaions

Material and Methods: An epidemiological study is carried out in 2008. Objects of the study are 2400 students from 7 to 18-years of age from the town of Plovdiv, Bulgaria, with the total of 9138 deciduous teeth and 52093 permanent teeth. Dental caries and materials used in dental caries treatment are investigated. The prevalence of dental caries of both deciduous (Et) and permanent teeth (ET) are determined, as well as the percentages of treated and untreated dental caries respectively, and the percentages of the different types of materials used in dental caries treatment. The data and results of the deciduous teeth are given for the whole population in general, because of their physiological exfoliation. The data and results of permanent teeth are presented for each of the age groups. Results: Results of the investigation show deciduous teeth dental caries prevalence Et = 32,92, as 42,69 % comprises the untreated, and 57,31% - the treated dental caries. 62,77 % of the restorations of deciduous teeth made are amalgam restorations and 37,23 % are polymer restorations. ET increases with age from 8,96 in 7-year-old children to 23,43 in 18-year-olds. In students from 7 to 15 years of age the percentage of untreated dental caries is greater than that of treated dental caries. The percentage of treated dental caries is greater than that of untreated dental caries in students aged 16 and up. In the distal area the percentages of composite restorations are greater than that of amalgam restorations in all of the age groups. Alarmingly, 2,08 % of 10-year old children have undergone extraction during their dental caries treatment, and 1,44 % of 12- year olds have got crowns. Conclusion: Dental caries prevalence level and percentage of untreated dental caries are high for the whole population examined. Composites are the restorative materials preferred in dental caries treatment. There is strong need for more information and active measures in prevention and treatment of dental caries. Key words: dental caries, prevalence, treatment, materials

Results: · Parents do not have definite attitude towards cariogenicity of particular food and 60% of the parents consider sweets and chocolate to be cariogenic food. The children are fed at night by bottle in 42.1% cases and their food and drinks are additionally sweetened daily in 23.3% cases. ·Parentsarenotawareoftheimportanceofproperhygieneat that age and 70% of them do not provide regular hygiene for their children ·Circularcarieshasoccurredin14,2%ofcasesindicatinghigh prevalence Conclusion: Prevalence of circular caries in examined children is very high showing that health education of parents and children is very urgent. Health education is of utmost importance in order to: - Point out the importance of proper and regular oral hygiene - Give instructions for regular use of fluoride - Change the unhealthy eating habits - Implement preventive prophylactic measures continuously.

Authors Maria Kukleva, Veselina Kondeva, Alexandra Isheva, Sevda Rimalovska Department of Pediatric Dentistry, Faculty of Dental Medicine, Plovdiv, Bulgaria Introduction: Physical attractiveness is psychologically important, particularly to children and young adults. Studies have shown that the oral region is of primary importance in determine overall facial attractiveness. Purpose: To study the opinion of young adults about esthetic perception of dental fluorosis. Materials and method: Study included 120 young adults aged 18 to 22 years. They are asked to range the esthetic appearance of teeth shown on photos from 1 to 10. Among them is a photo of teeth with normal shape and colour, which serves as a model. Results: All young adults taking part in the study perceive dental fluorosis as aberration in the esthetic appearance of teeth. They perceive the change in the form and shape as more significant aberration compared to dental fluorosis. Yellowbrown colouring receives higher scores as aberration compared to partly loss of enamel. Conclusions: Young adults perceive dental fluorosis as aberration in the esthetic appearance of teeth. This may have social consequences for children with dental fluorosis.

P 312 EATING hABITS AS A CAUSE Of OCCURRENCE Of CIRCULAR CARIES IN PRESChOOL ChILDREN Authors Snezana Matijevic Health Center Tivat, Montenegro Aim: Research on impact of eating habits as a risk factor for occurrence of circular caries Method: The research was conducted on 152 subjects, 2 to 5 years of age. In order to determine the occurrence of circular caries in children of this age, dental examination was carried out by using mouth mirror and probe as well as the questionnaires about eating habits filled out by the parents.

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PP 313 ESThETIC PERCEPTION Of DENTAL fLUOROSIS fROM yOUNG ADULTS

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PP 314 ETIOLOGy AND TyPE Of DENTO ALVEOLAR INjURIES IN PRESChOOL ChILDREN Authors Altun C, Avsever H, Ozen B, Guven G Gulhane Medical Academy, Ankara,Turkey The aim of this study was to identify the etiology and type of dento-alveolar injuries treated at the Gulhane Medical Academy Department of Pediatric Dentistry's Centre of Dental Sciences in Ankara, Turkey in order to develop a basis for determining optimal treatment approaches and teaching needs. The study involved 2492 children (1344 boys, 1148 girls) aged 1-5 years examined. Injuries were classified according to drawings and texts based on the WHO classification system, as modified by Andreasen and Andreasen.

Introduction: The use of bottled water may be a significant source of systemic fluoride and can therefore be considered as a risk factor for dental fluorosis in young children. Purpose: The aim of this study is to determine the fluoride content of commercially available bottled drinking water and to report on the accuracy of the labeling of fluoride concentration. Materials and method: Twenty brands of bottled water were evaluated. The measurements were made at a room temperature with an ion-selective electrode ORION 96-09 mounted on an ion-meter ORION Benchtop pH/ISE Meter model 920A, using standard solutions and reagents, obtained also from the ORION Research Inc. The average reading for each brand was compared with fluoride content printed on the label. Results: Results reported in frequencies and percentages indicated that only 5 % (N=1) of tested brands contained an optimal level of fluoride; 35 % (N=7) of tested brands contained fluoride level from 2.0 to 5.0 ppm F; only 15 % (N=3) of tested brands contained a fluoride concentration consistent with that listed on the label. Conclusions: When prescribing fluoride supplements, dentists should be aware of the fluoride content of bottled water used by child patients, especially for brands with concentration higher than 0.3 ppm F.

PP 315 fIBROUS EPULIS IN A 14-yEAR-OLD ChILD: CASE REPORT

Poster Presentaions

Authors Radka Cholakova, Svetla Petrova, Mariana Dimitrova Medical University, Faculty Of Dental Medicine, Department Of Pediatric Dentistry, Plovdiv, Bulgaria The authors present a case of fibrous epulis of the gingival in a 14-year old boy. The formation was detected during a routine dental examination in the area of marginal gingival around teeth 31, 32. These formations are scarcely observed in children. After a clinical examination, a surgical intervention took place ­ an excision to a healthy tissue was made. The histological examination confirmed the diagnosis. After a nine-day rehabilitation period a mechanical causal therapy was carried out under infinite control. At the first visitation the supragingival tartar was removed, at the next one the subgingival layers were also removed. The patient was motivated to keep his oral hygiene. The treatment continued with daily application of Gingigel. Key words: fibrous epulis, child, excision

PP 317 jAW CyST, SKELETAL ANOMALIES AND BASAL CELL NEVI ­ CASE REPORT Authors Ajanovic I, Lacevic A, Trako N House Of Health With Policlinic Kakanj, Bosnia And Herzegovina Introduction: The patient, 13 years old school boy from the middle part of B&H came to our office with pain and chin edema. During examination and anamnesis we found out that the boy already felt pain before and had sore two times, in the chin area. This patient also has congenital deformation of the hip bone and many nevi on his back head. Purpose: Purpose of this case report is to present symptoms which refer to the Gorlin syndrome, (nevoid basal cell carcinoma syndrome), rare hereditary disease, whose basic feature is presence of jaw cysts. Materials and methods: Materials and methods used are: · Clinicalexaminationandtreatment · X-rayexamination · RVGexamination · Familyhistoryresearch · Surgicalintervention

PP 316 fLUORIDE CONCENTRATION Of BOTTLED DRINKING WATER Authors Nikolai Sharkov, Maria Kukleva, Veselina Kondeva Department of Pediatric Dentistry, Faculty of Dental Medicine, Sofia, Bulgaria Department of Pediatric Dentistry, Faculty of Dental Medicine, Plovdiv, Bulgaria

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Poster Presentaions

Conclusion: Importance of the Gorlin syndrome is a presence of jaw cysts potentially malignant. Gorlin syndrome can be found during clinical examination and by family anamnesis, since this rare disease is genetically defined. In this case report presence of jaw cyst around intact teeth, many nevi in the area of a back head, congenital deformation of the hip bone, and positive family anamnesis indicates the presence of the Gorlin syndrome.

2007. Study included 2113 children at the age of 15,of both sexes(1402 from the city and 711 from the suburb).All children were examined on dental chair with artificial light on dry teeth and standard diagnostic means.Prevalence of caries was analyzed using DMF index. Results: Results showed that average number of carious teeth per child (DMFT) for all children from Podgorica and suburb is 5,21.Children from the city had lower value of DMFT (4,61) then children in suburb (6,20). Percentage of non treted caries was significantly higher in children from suburb(D=51,85%) compared to children from the city (D=35,93%).The number of filled teeth(F=52,19%)and missing teeth (M=11,87%) is higher for city children than their peers from the suburb (F=38,68%,M=9,46%). Conclusion: 5 year old children in Podgorica have large number of carious teeth.Children in suburb are more affected with caries and with less favorable structure of DMFT.Therefore it is necessary to implement the system of primary health care and to find a solution to this problem.

PP 318 MOLAR INCISOR hyPOMINERALISATION (MIh) Authors Svjetlana Jankovic, Igor Radovic, Bojana Smrekic Faculty of Medicine, Dentistry, Bosnia and Herzegovina Molar Incisor Hypomineralisation (MIH)represents hypomineralisation of systemic origin teeth, which affect of one to four first permanent molars frequently associated with incisors. Teeth affected by MIH are more sensitive to thermical, chemical and mechanical irritation. Aesthetic treatment of incisors is another problem. The aim of this abstract is to identifi prevalence of MIH in chilfren living on the territory of Municipality Foca (BiH), and to compare with prevalence in other countries, as well as to emphasize the significanse of this problem. Altogether 141 eight-year-olds have been examined, 71 boys and 70 girls. Examinations have been done out by one calibrated examiner (kappa score 0,95). Parents have been asked for permission to allow their children to take part in the study. Statistical analysis of the data has show that MIH is the commonest in first permanent mandibular molars, mostly on tooth 36 (26,9%). The prevalence of 12,8% in children in this region in comparisson with revalent data of other researchers (3,6-25%) is relatively hight.Today, only limited data abaut MIH are avialable in literature, although it important clinacal problem in children suffering from MIH.

Authors V. Veleganova, N. Kaleva, S. Mileva Department of Pediatric Dentistry, Faculty of Dental Medicine ­ Plovdiv, Bulgaria Introduction: Diabetes mellitus is endocrinic disease, due to total (absolute) or partial insulin deficiency or insufficient effectiveness of insulin in the peripheral tissues. Diabetes mellitus is rare in children and young adolescents. In spite of this it is the most widespread endocrinic disease among children in Bulgaria ­ 7-9 /100000. Aim: To investigate the dental treatment needs of children with IDDM from Plovdiv.

PP 319 ORAL hEALTh 15 yEARS OLD ChILDREN IN PODGORICA Authors Mirjana Durickovic, Radoje Stevanovic, Mirjana Ivanovic, Serbia, Montenegro Faculty of Medicine, Podgorica, Montenegro, Clinic of Prev/Paed.Dentistry, School of Dentistry, University of Belgrade, Serbia Aim: Aim of this paper is to show prevalence of carious teeth and difference in its prevalence at children aged 15 in capital city of Montenegro and its suburb. Method: Examination was performed according to WHO standards.Research was done in October and November

Material and Methods: Children and adolescents with closely monitored IDDM, attended the Pediatric Clinic in Medical University, in the town of Plovdiv, are included in this study. This study compared oral health status in children with IDDM, with nondiabetic population, 5 to 17 years old. The examination included oral and medical history of the disease (duration of the diabetes, age of the onset and metabolitic control). The treated and untreated caries and periodontal treatment needs are investigated. OHI-S of Greene-Vermillion, Plaque Index, Bleeding on Probing, Probing Depth and CPITN are used. The study is carried out in 2009. Results: The df /DMF scores for diabetic children and for healthy children did not differ statistically significant. The diabetic group had statistically higher plaque scores. In the newly diagnosed IDDM cases, the gingival bleeding decreased after initiation of insulin treatment. In the long-term IDDM cases, the gingival

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PP 320 ORAL hEALTh STATUS AND DENTAL TREATMENT NEEDS Of INSULIN-DEPENDENT DIABETIC ChILDREN fROM PLOVDIV, BULGARIA

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Proceedings of BaSS 2009

bleeding was more pronounced in the poorly- controlled patients than in well- controlled subjects. Conclusion: Patients with IDDM required more profound follow up of oral status and continuous control of periodontal status. Key words: insulin-dependent diabetes mellitus, children, adolescents, dental caries, periodontal condition

PP 322 PRETREATMENT CONSIRADTION RADIATION ThERAPy

fOR

ChILDREN

ON

Authors Andjela Vukovic, Dejan Markovic, Aleksandra S. Djurovic, Neven Lekovic PSO "Lekovic", Montenegro Cancer in childhood is very rare condition. In clinical studies representing less than 1% of all cases in population. Today, it is predict that more than 70% of children diagnosed with cancer will be long term survivors. This success has partly been active by the use of aggressive multiagent chemotherapy (CT) and radiotherapy (RT). Children with radiotherapy belong to medical compromised patient group. Special place in pediatric dentistry belongs to this patients. There are several important dental recommendation for this patients. Before radiotherapy the following recommendation apply: 1. Children with broke down primary or permanent teeth that are nonrestorable should have than extracted. 2. All active caries lesions should be restored. 3. Chronical inflammation lesion in the jaws should be examined and treated. 4. There are still appears to be some risk for osteoradionecrosis if teeth are extracted 14 days before the started radiotherapy. This risk may be reduced to zero if extraction are performed 21 or more days before therapy is started. Aim. The aim of this work is to improve the quality of life for patients with maligned disease who are receiving cancer therapy that has case implication for oral comfort and function by promoting consistent high standards of pretreatment considerations. Keywords: childhood cancer, radiotherapy, pretreatment

PP 321 ORAL hyGIENE AND CARIES PREVALENCE IN ChILDREN WITh AUTISM AND CEREBRAL PALSy ATTENDING QKMZhRf (NATIONAL CENTER Of ChILDREN GROWTh, DEVELOPMENT AND REhABILITATION) IN TIRANA Authors Eno Gace, Frida Ferhati, Elsa Aliaj U.F.O. University, Faculty of Dentistry, Tirana, Albania

Poster Presentaions

Objectives: The aim of this study was to evaluate the oral hygiene and caries prevalence in children with autism and cerebral palsy. Material and method: The study comprised 49 children In the QKMZHRF (National Center of children growth, development and rehabilitation)-in Tirana. It is for the first time the study is being carried out in Albania. The children were separated according to their medical diagnose and age. Due to diagnose, there were 22 autistic children and 27 children with cerebral palsy and mental retardation. Due to age, they were separated in two groups, 29 children aged 0-5 years old and 20 children aged 6-10 years old. The accumulated data was generated for the dmft, dmfs, SiC index and the oral hygiene degree. The data was elaborated statistically with SPSS 16. Results: By the data management process resulted that 59% of the children had caries, the general index of the DMFT is 3.89 and according to age, in 0-5 years old is 2.86, and in 6-10 years old is 5.15. The SIC index according to group age is 9.7 and 10.1, while dmfs due to group age 2.96 and 6.4. The oral hygiene of the children is presented with 20 patients in good oral hygiene,12 in average oral hygiene, and 16 in poor oral hygiene. Discussion: The collected data did not show any significant differences with other author's data and was inside the limits reported by these studies. The generated data was also proximate with those of non autistic children in Albania. What was noted in the study was the lack of dental service for this category of children, the establishment of a program for the ways of maintenance of a good oral hygiene, as well as staff and parent treatment for oral care.

PP 323 PREVALENCE Of MOLAR INCISOR hyPOMINERALIZATION (MIh) IN ChILDREN Of AGE 7 TO 14 fROM ThE TOWN Of hASKOVO AND ThE COMMUNITy Of yAKORUDA, BULGARIA Authors Svetla Petrova, Mariana Dimitrova Medical University, Faculty Of Dental Medicine, Department Of Pediatric Dentistry, Plovdiv, Bulgaria Molar incisor hypomineralization (MIH) is a developmental disturbance of enamel affecting the first permanent molars and permanent incisors. The epidemiological evidence on MIH prevalence shows it to be in the range of 3.6 ­ 25 %. The aim of the study is to determine the prevalence of Molar incisor hypomineralization (MIH) in a group of children from Haskovo and Yakoruda and to compare obtained data to those of a previous epidemiologic study conducted in Plovdiv in 2006.

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Materials and methods: 1320 children aged 7 to 14 from the town of Haskovo and from the community of Yakoruda have been studied. The age groups are standardized. Each of them includes 110 children. The data are collected by a single examine in 2009. The prevalence of MIH was determined totally and for each age group. Also determined was the average number of teeth affected per person with MIH. Results: The average values of MIH prevalence in the studied group in Haskovo are 6.04%. The prevalence of MIH for the different age groups was within the range of 5.45% - 8.18%. The average values of MIH prevalence in the group studied in the community of Yakoruda are 10.29%. The prevalence of MIH in different age groups is in the range 9.09 % - 12.72%. Conclusion: The data collected through the study shows different levels of prevalence of MIH in the two studied regions. The prevalence of MIH in the town of Haskovo and in the community of Yakoruda is much higher than the one established by the previous study conducted in Plovdiv in 2006. Key words: molar incisor hypomineralization, epidemiology

Karadeniz Technical University, Faculty of Dentistry, Department of Endodontic and Pediatric Dentistry, Trabzon, Turkey Trauma to teeth and supporting structure is a frequent problem among children. Pulp therapy is necessary for 41.3% of traumatized teeth because of pulpal necrosis. There are surgical and nonsurgical methods for elimination of these bacterias from periradicular lesion. When endodontic treatment and periradicular surgery fail then success rate of another surgical procedure is much lower. This case report presents nonsurgical retreatment of traumatized tooth which had unsuccesful apical resection associated with large periradicular lesion. During the root canal retreatment of the tooth, 2.5% sodium hypochloride solution was used for irrigation. The combination of antibiotic drugs was used as intracanal medicament and MTA was used to obtain a hermetic seal of lateral tooth which had unsuccessful apical resection. Two years later the teeth were clinically and radiographically asymptomatic. In conclusion, a triple antibiotic paste can be used in teeth with large periradicular lesion and MTA can be a choice of material to obtain a hermetic seal.

PP 324 PROSThETIC TREATMENT IN A hyDROTIC ECTODERMAL DySPLASIA (CASE REPORT) Authors Ceyhan Altun, Hakan Avsever, Kaan Gunduz, Kaan Orhan, Dincer Yilmaz Department of Pediatric Dentistry, Gulhane Medical Academy, Ankara, Turkey Ectodermal dysplasia (ED) is a rare, hereditary disease that has an X-linked recessive mode of inheritance. Ectodermal dysplasias are divided into two groups as hidrotic and anhidrotic/ hypohidrotic. This disease affects not only the skin, saliva, sebasseous and sweat glands, but also hair, nail and teeth. The main dental features are partial or total anodontia. Prosthetic treatments have to be individually planned for these children with ectodermal displasia since their dental status shows many variations. In this case report, the dental treatment of a case of ectodermal dysplasia, who reffered to GATA Dental Science Center, Department of Pedodontics, was presented. Key words: Ectodermal dysplasia, overdenture prosthesis. PP 326 STUDy Of fLUORIDE CONCENTRATION IN READy-TO-fEED POWDER MILK Authors Maria Kukleva, Nikolai Sharkov, Veselina Kondeva Department of Pediatric Dentistry, Faculty of Dental Medicine, Plovdiv, Bulgaria Department of Pediatric Dentistry, Faculty of Dental Medicine, Sofia, Bulgaria Introduction: Nowadays many of the children in early childhood consume infant formula. Only few of the commercially available brands have labeling of fluoride concentration. Purpose: To determine the fluoride contents in ready-to-feed infant formulas. Materials and method: Fluoride concentration in 6 brands of most consumed infant formulas is investigated. Samples are prepared with deionised water and mineral waters "Devin" and "Bebe", which are recommended for use by young children. Water is heated and boiled for 5 min. and afterwards cooled down to 400 C. Mixing water and powder is made according to producers' recommendations. The measurements were made at a room temperature with an ion-selective electrode ORION 96-09 mounted on an ion-meter ORION Benchtop pH/ISE Meter model 920A, using standard solutions and reagents, obtained also from the ORION Research Inc. Results: Results show that fluoride concentration in samples is low. Fluoride levels in samples with deionised water are from

PP 325 RETREATMENT Of TRAUMATIZED TOOTh ASSOCIATED WITh LARGE PERIRADICULAR LESION USING A TRIPLE ANTIBIOTIC PASTE AND MINERAL TRIOXIDE AGGREGATE (MTA): A CASE REPORT Authors Kusgoz Adem, Yildirim Tahsin, Er Kursat, Arslan Ipek

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0.03 to 0.08 ppm, in samples with "Devin" mineral water they are from 0.04 to 0.11 ppm and in samples with "Bebe" mineral water they are from 0.05 to 0.11 ppm. Conclusions: Fluoride concentration in tested infant formulas is low. "Devin" and "Bebe" mineral waters are suitable for mixing of powder infant formulas.

PP 327 STUDy Of PERIODONTAL STATUS Of PREGNANT WOMEN fROM ThE TOWN Of PLOVDIV AND ThE REGION Authors M. Dimitrova, Mileva S., Petrova S. Department of Pediatric Dentistry, Faculty of Dental Medicine ­ Plovdiv, Bulgaria The aim of this study was to assess the periodontal status of pregnant women. Material and Methods: The study included 120 pregnant women, living in Plovdiv and it's region, aged from 20 to 40 years. 60 of them were in first half of the pregnancy, and the other 60 women were in the second half. Particular statistical list was created for the investigated contingent. The presence of dental plaque and calculus were evaluated according to OHI-S and CI of Greene-Vermillion. Periodontal examination consisted of bleeding on probing (BOP), probing depth (PD) at four sites per tooth. Ball-ended periodontal probe was used. The presence of gingival recessions or hypertrophy was noted also. Results: The mean OHI-S score was 1,04. High percent of the examined women exhibit presence of calculus (69%), and 50,03% of them exhibit subgingival calculus. The majority of women had bleeding on probing (68,41%), which indicates some kind of gingival inflammation. 54,13% of the subjects had periodontal pocket > 3,5 mm at least at one site. In 9,22% of the pregnant women were observed localized gingival enlargements, and in 10,07% recessions. Conclusion: The data analysis revealed that high percent of the pregnant women had periodontal problems and they need appropriate preventive and treatment measures. Key words: pregnancy, periodontal disease

Medicine and Pharmacy, Iasi 2 Prep. Disciplina de Cariologie si Odontoterapie Restauratoare, Facultatea de Medicina Dentara,"GR. T. Popa" University of Medicine and Pharmacy, Iasi 3 Prep. Disciplina de Cariologie si Odontoterapie Restauratoare, Facultatea de Medicina Dentara,"GR. T. Popa" University of Medicine and Pharmacy, Iasi 4 Prof. Dr. Disciplina de Cariologie si Odontoterapie Restauratoare, Facultatea de Medicina Dentara, "GR. T. Popa" University of Medicine and Pharmacy, Iasi, 5 Asist. Univ. Disciplina de Cariologie si Odontoterapie Restauratoare, Facultatea de Medicina Dentara,"GR. T. Popa" University of Medicine and Pharmacy, Iasi Romania The acquired pellicle is an organic film covering the surface of teeth. When this film was first discovered, it was thought to be of embryologic origin. Only in the middle of this century did be come clear that it was acquired after tooth eruption. Initially, amounts of material that could be obtained have virtually limited the investigation of pellicle proteins to amino acid analysis. Nevertheless, this technique revealed that the pellicle is mainly proteinaceous and is formed by selective adsorption of salivary proteins on tooth enamel. Later, immunologic techniques allowed for identification of many salivary and fewer non-salivary proteins as constituents of pellicle. However, to this date, isolation and direct biochemical characterization of in vivo pellicle protein have not been possible, because only a few micrograms can be obtained from a single donor. Therefore, the composition and structure of acquired enamel pellicle are still essentially unknown. Information on the function of pellicle has been obtained mainly from in vitro experiments carried out with saliva-coated hydroxyapatite and enamel discs. It was found that pellicle protects enamel by reducing demineralization upon acid challenge. Improved pellicle analysis by state-of-theart proteomics with mass spectroscopy approaches promise to make in roads into the characterization of enamel pellicle. Key Words: The acquired pellicle.

Poster Presentaions

PP 329 ThE ENDODONTIC TREATMENT IN PRIMARy TEETh Authors Prof Diana Brovina, Ergysejda Hoxha Phd, Enida Petro, Manola Kelmendi University of Dentistry, Tirana, Albania

PP 328 ThE ACQUIRED ENAMEL PELLICLE ­ NATURAL PROTECTIVE fILM Of ThE TEETh Authors Carmen Stroici1, Antonia Moldovanu2, Andrei Georgescu3, Sorin Andrian3, Galina Pancu4

1

Introduction: In pediatric dentistry of primary teeth when advanced caries affects the pulp,the main problem is their managing. Firstly the treatment that has its own difficulties according to the children`s age, because of the time that has to be spend on that and the uncomfortable process and on the other hand the extraction. Aims: The aim of this study is to follow the progress of primary teeth with pulp`s pathology,treated with pulpotomy method and those treated with pulpectomy.

Drd. Disciplina de Cariologie si Odontoterapie Restauratoare, Facultatea de Medicina Dentara, "GR. T. Popa" University of

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Methods: There were taken about 120 children of ages(2-10 years) with advanced caries and pulp`s complications,to be studied.30 of them were treated with pulpotomy (formocresol paste-19% aldehid form and 35% tricresol)and 90 were treated with pulpectomy (canason- zinc oxyde eugenol) Results: The treated children were controlled for a period of two years and the results show that:5 of the teeth treated with pulpotomy were fistulized.Then they were treated with pulpectomy.Only 8 of them were extracted. Conclusion: The dentar health is an important element of the general health in the early childhood,because healthy primary teeth help children to have later healthy permanent teeth.

PP 331 ThE SUCCESS Of ROOT CANAL TREATMENT WITh TG-PEX fOR PRIMARy TEETh WITh fURCATION LESIONS Authors Volkan Arikan, Saziye Sari, Hayriye Sonmez Ankara University, Faculty of Dentistry, Department of Pediatric Dentistry, Turkey Furcation area is an important anatomic region for the primary teeth due to the neighborhood of the developing permanent tooth germs to this area. The frequency of lesions in the furcation area is higher in primary teeth because of the higher number of accessory canals, wide dentin tubuli and thin pulpal floor. The lesions in this area can be treated with pulpectomy, otherwise, extraction is needed. However early loss of a primary molar has some consequences such as need for space maintainers and early and immature eruption of the successor teeth. In this study 23 primary molar teeth with furcation lesions were treated by using Tg-pex (Calcium hydroxide paste with iodoform). The lesions that had direct connection with underlying permanent tooth germ were excluded from the study. The root canal treatments were performed in two appointments and final restorations were performed using compomer after root canal fillings. Average time for follow-up is 14.8 months with a minimum 12 months and maximum 19 months of follow-up. For 3 of the teeth, lesions continued to diffuse and teeth were decided to be extracted. The lesions in 20 remaining teeth were disappeared completely during follow-up in an average time of 4.5 months and treatments were successful both clinically and radiographically. For 2 of these teeth, canals were refilled with Tg-pex because of early resorption of the pastes during the follow-up. As a conclusion Tg-pex gave encouraging results for the treatment of primary teeth with furcation lesions.

PP 330 ThE IMPORTANCE Of ORAL hEALTh AT ChILDREN WITh CONGENITAL hEART DISEASES Authors Aida Rexhepi, Adil Raka, Osman Sejfia, Vjosa Hamiti, Muje Shala University of Prishtina, Medical Faculty, Kosovo The congenital heart diseases are frequent anomalies that appear in the dental practice and are considered to be a risk factor for the development of bacterial endocarditis from oral cavity diseases and dental treatments. The oral health care plays an important role for the general health protection of these patients. Purpose: The aim of this study is to determine the level of oral hygiene, one of the most important components of oral health and to evaluate the knowledge of patients with CHD or their parents for the link between the oral health and general health. Material and method: This study included 123 children divided in a study group (80 children with CHD) and a control group (43 healthy children) from different parts of Kosovo, age 3 through 15 years. The oral hygiene was examined using OHI index according to Greene-Vermillion, while the knowledge of oral health care was examined using the anamnesis taken from children or their parents. Results: The OHI index values of 0.1-1.0 were on 66.3% of the study group and 60.5% on the control group. There was no significant difference between two groups (p>0.05). About 68.8% of patients (parents) with CHD were informed about the risk during the dental interventions but they had no knowledge about the importance of oral health care. Conclusion: The results are showing that the oral health care is not good at patients with CHD and in view of their health constrains, measures have to be undertaken for its improvement.

PP 332 TREATMENT Of MIh INCISOR TEETh WITh MINIMAL INVASIVE METhOD Authors Danijela Subotic, Gordana Stefanovic Clinical Hospital Center of Montenegro, Belgrade Medical Center, Serbia Introduction: The term Moral Incisor Hypomineralisation (MIH) is relatively new in stomatology. It describes the hypomineralisation, with systematic origin, on first permanent morals and permanent incisives. Etiology of this state is not completely known. Macroscopic changes on teeth can be seen as clouding of enamel, from yellow to brown colour. Hypomineralisations can be discrete, thereby causing fast post eruptive splintering of enamel, exposing of dentins and complications. Apart from causing children's annoying and parents\' worries, MIH influences labial surfaces of incisives and makes very serious esthetic problems, which are the reasons why children often visit dentists. Thanks to modern adhesive systems, today's stomatology offers many opportunities to solve this condition.

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Objective: Fourteen years female and eighteen years old male patients were diagnosed with MIH. Both patients visited the dentist because of disturbed esthetic, even though there were obvious unsettlements of enamel structure in lateral segments of tooth wall (pictures: 1,2,3,4,5). The objective of this work is to show esthetic corrections capabilities on this kind of enamel anomalies, using minimal invasive methods. Methodology: The treatment of first patient started with tooth bleaching. The tooth print has been taken by alginate, and the tray has been made. The bleaching has being done with carbamid ­ peroxide gel concentration 10%, 15%, and 20 %, in duration of 30 days (picture 6-10). After the bleaching the teeth have been treated with micro abrasion (pictures: 11 and 12). Hypomineralisations of enamel which could not be cured with bleaching and micro abrasion have been removed with high- turage machines, and suitable size drills. Then the composite material (CG ­ Gradia) has been placed, according the manufacturer's directions (pictures: 13-17). Air- abrasion is micro abrasive technique performed with special apparatus (picture 18), where using compression method, thin air with particles of aluminum trioxide and silicium got out through work continuation. A special convenience of this minimal invasive method is that the whole thickness of hypomineralised enamel can be removed and that the preparation for positioning of thin composite veneer can be made. That has been the chosen method for second patient. The first step in the treatment was positioning of metallic matrix in order to protect ambient oral structures. After that, the changed enamel is removed with air abrasion up to enameldental limit. Then, using the modern adhesive methods (CG ­ G bond, Gradia flow and Gradia direct), the composite faseta has been placed (pictures: 19-30). Conclusion: The treatment is light, painless, and acceptable for patients, where satisfactory esthetic effect is achieved.

Patients and methods: Clinical cases of three child patients, aged 3, 5 and 10 will be presented, through short dental history data and accompanying photodocumentation. Treatment of dental caries and its complications is in progress in two male patients, and one female patient had dental trauma. Common for these three cases is that treatments comprised also special psychological approaches, followed by active cooperation with parents. Our clinical cases and treatment approaches will be discussed with similar that published recently. Conclusion: pediatric dentistry represents dentistry on a small scale. One of the main duties of this discipline is to form dental behavior of patients and to create a patients for recalls, not for sanation of repeated oral diseases. Reaching of that implies qualitative cooperation in child patient-parent-dentist relation, with very important role of parent, that has to be maximally exploited.

PP 334 fABRICATION Of A MANDIBULAR TOOTh- IMPLANTSUPPORTED ZIRCONIA CERAMIC fIXED PARTIAL DENTURE TO OVERCOME AN ANGULATION PROBLEM ASSOCIATED WITh ThE ABUTMENT TEETh: A CLINICAL REPORT Authors Bulent Uludag DDS, ph.D, Volkan Sahin DDS, ph.D, Gurkan Goktug DDS University of Ankara, Faculty of Dentistry, Department of Prosthodontics, Turkey Goldman school of dental medicine, Restorative science and biomaterials, Boston University, USA Telescopic crowns are gaining favor in implant prosthodontics, to permit modifications of their contours and to provide a common path of insertion for the overlying prosthesis. The use of the conventional telescopic prosthesis may not be recommended when there is a high esthetic demand. Due to the strength of zirconia ceramics, they may be used to restore removable partial denture (RPD) abutments, in areas previously reserved for metal or metal-ceramic restorations. The opaque nature of zirconium covers and masks the underlying metal color of the abutment, while still providing much of the enhanced esthetics attributed to all-ceramic restorations when used on implant abutments. This article describes the fabrication of a mandibular tooth- implant-supported zirconia ceramic FPD to overcome an angulation problem associated with the abutment teeth.

Poster Presentaions

PP 333 VARIOUS TREATMENTS Of ChILD PATIENTS WITh SPECIAL fOCUS ON PSyChOLOGICAL APPROACh Authors Bajric E, Huseinbegovic A, Kobaslija S Faculty of Dentistry, University of Sarajevo, Bosnia and Herzegovina Introduction: Pediatric dentistry enters in almost all specializations of dentistry, considering the pathology that deals with. Besides, during complete sanation of child patient and its dental education it is necessary to know child psychology. Also partnership with child patients parents is important for success of dental treatment. Aim of this work is to show few clinical cases of child patients with bringing focus to a psychological approach to child patient.

PP 335 A COMPARISON Of ChARACTERISTICS Of IMPLANT fAILURE AND SURVIVAL IN PERIODONTALLy COMPROMISED AND PERIODONTALLy hEALThy PATIENTS: A CLINICAL REPORT Authors Nicolaescu Valerian, Martu Silvia

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"Apollonia" Faculty of Dentistry, Iasi, Romania Purpose: This study compares implant survival and patterns of implant failure in periodontally compromised and periodontally healthy patients. Materials and method: Implants were placed in both periodontally compromised and periodontally healthy patients over a 4-year period. They were classified in 5 different groups according to surface texture. Survival rates in each group were compared according to:Implant location, Diameter,Length,Phase of treatment. Results: A total of 476 implants were placed in 198 patients. 71 of these patients, classified as periodontally compromised (PCP), received 223 implants. The remaining 121 patients, classified as periodontally healthy patients (PHP), received 223 implants.The overall survival rate for implants placed in the PHP group was 93,7% compared to 90,6 % in the PCP group. The survival rate of hidroxyapatite-coated implants was 92,6 % in the PHP group and 81% in the PCP group.The survival rate of the turned-surface implants was similar in both groups. Discussion: Two types of implant failure were identified.The first was failure of the implant to osseointegrate.This type of failure occurred early in treatment and appeared to be related to smooth-surface impalnts placed in bone low density.Failure of this type were distributed equally between the PHP and PCP groups.The second type of failure was related to peri-implantitis. It was observed most often with impalnts with hidroxyapatite surfaces, occurred as thew results of a progressive condition, and was most prevalent in the PCP group. Conclusions: Further long-term controlled investigations are needed to determine the influences of implant surface and host susceptibility on implant failure in both PHP and PCP. Key words: survival, osseointegration, surface, implant failure

Results: A total of 476 implants were placed in 198 patients. 71 of these patients, classified as periodontally compromised (PCP), received 223 implants. The remaining 121patients, classified as periodontally healthy patients (PHP), received 223 implants.The overall survival rate for implants placed in the PHP group was 93,7% compared to 90,6 % in the PCP group. The survival rate of hidroxyapatite-coated implants was 92,6 % in the PHP group and 81% in the PCP group.The survival rate of the turned-surface implants was similar in both groups. Discussion: Two types of implant failure were identified.The first was failure of the implant to osseointegrate.This type of failure occurred early in treatment and appeared to be related to smooth-surface impalnts placed in bone low density.Failure of this type were distributed equally between the PHP and PCP groups.The second type of failure was related to peri-implantitis. It was observed most often with impalnts with hidroxyapatite surfaces, occurred as thew results of a progressive condition, and was most prevalent in the PCP group. Conclusions: Further long-term controlled investigations are needed to determine the influences of implant surface and host susceptibility on implant failure in both PHP and PCP. Key words: survival, osseointegration, surface, implant failure

PP 337 COLLECTING AUTOGENOUS BONE By IMPLANT DRILLS DURING IMPLANT OPERATIONS Authors Ugur Meric DDS PhD*, Amila Brkic DDS* *Department of Oral Surgery, Faculty of Dentistry Istanbul University Capa, Istanbul, Turkey Using implant drills as a bone collector is a very usuful tecnique, which can be used in almost all implant systems. Implant drills should have sharp cuts and should be used in low speed (100 tpm) and max torque; with no saline. Collected autogenous bone can be used after the implant placement in every dehiscence of the bone arround the implant. The aim of this work is to present a very effective and costless autogenous bone grafting procedure during implant placement, which gives a very good results for implant's osseointegration. At the same time it is comfortable both for patient and the dentist. Key words: dental implant, bone grafting, autogenous bone, bone collector

PP 336 CLINICAL STUDy REGARDING IMPLANT fAILURE AND SURVIVAL ON PERIODONTAL PATIENTS Authors Nicolaescu Valerian*, Martu Silvia** *Assoc. Prof., "Petre Andrei" University, "Apollonia" Faculty of Dentistry, Iasi, Romania **Prof., Phd, Periodontology Dept., U.M.F. "Gr. T. Popa", Faculty of Dental Medicine, Iasi, Romania Purpose: This study compares implant survival and patterns of implant failure in periodontally compromised and periodontally healthy patients. Materials and method: Implants were placed in both periodontally compromised and periodontally healthy patients over a 4-year period. They were classified in 5 different groups according to surface texture. Survival rates in each group were compared according to:Implant location, Diameter,Length,Phase of treatment.

PP 338 fABRICATION Of MAXILLARy IMPLANT-SUPPORTED OVERDENTURE WITh CEMENTED ELECTROfORMED BAR Authors Bulent Uludag DDS, Ph.D, Serdar Polat DDS,

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University of Ankara, Faculty of Dentistry, Ankara, Turkey Treatment of the edentulous maxilla with implants is challenging and present inherent problems. Such adverse morphologic effects can be more easily eliminated by the use of maxillary implant-support overdentures instead of fixed, screw-retained prostheses. Thus overdentures may become a favored and advantageous treatment option; however, it is likely that they are not a true alternative to fixed prostheses in terms of economics or time saving procedures. In treatment planning the maxilla with implants, one usually has to consider the options of both fixed and removable prostheses. This article describes fabrication of maxillary implant-supported overdenture with cemented electroformed bar cause of difficulty speech and esthetic on maxillary implant supported combined prostheses.

PP 340 PROfESSIONAL MAINTENANCE Of IMPLANT RESTORATION Authors Metodi Abadzhiev, DMD, PhD, Miglena Balcheva, DMD MU-Varna, Dental Faculty, Varna, Bulgaria Introduction: Late problems of implant restorations are connected with high plaque index mostly and bad planning of prosthetic suprastructures. This calls for a regular professional maintenance insuring the successful functional life of the implants. But the conventional ultrsonics tips are aggressive and they can harm implants surface et cervical area. Purpose: Our purpose is to pay a tension to the necessity of regular professional examination and plaque control manipulations and to the suitable instruments. Methods and materials: Statistically significant number of patient with implant suprastructure. Ultrasonics unit. Carbon and teflon ultrasonics tips for implants maintenance.

PP 339 INTERDISCIPLINARy EDENTOULISM

APPROACh

Of

SINGLE

TOOTh

Results: The implant surface damage after standard ultrasonic tips using, is clearly demonstrated on pictures and electron ­microscopy images. Conclusions:The plaque index increase inevitably leads to periimplantates. Recurrent oral hygiene procedures are obligatory and the suitable instruments are teflon and carbon tips.

Poster Presentaions

Authors Ass. Dr. Bratu Dana Cristina*, Prof. Dr. Bratu Emanuel Adrian**, Ass. Dr. Karancsi Olimpiu**, Dr. Sita Radu**, Dr. Ivanova Yana *Department of Peadodontics and Orthodontics, Faculty of Dentistry Timisoara, Romania **Department of Oral Implantology, Faculty of Dentistry Timisoara, Romania Key words: orthodontic fixed appliances,dental implants,single tooth,Bio-oss block Introduction: Single tooth edentoulism in young adults cases can be often treated with the use of dental implants.However, in many cases,recalibrating the gap is needed,and orthodontic appliances have to be used in order to get aesthetic and functional results. Material and Method: The pacient P.A.,male,30 years age,presented root fracture of 1.1, 3.1with grade 3 mobility and extraction of 46,after a car accident.Because the pacient did not undergo dental treatment for 2 years after the accident, tooth migration was present combined with bone loss.The space for a single crown restauration was too large, so orthodontic fixed appliance treatment was decided.Bone reconstruction with Bio-oss block was performed in position of 1.1.After 6 month, two dental implants were inserted in position 1.1(Implantim OrVit Italy) and 3.1 (MIS LANCE Israel).After 4 months, provisional crowns were cemented and the orthodonic appliance was removed.The final restauration was represented by metalceramic crowns. Conclusion: Implant treatment should always be combined with orthodontic treatment in order to obtain good aesthetic results, especially when inadequvate interdental space is present.

PP 341 PROSThETIC REhABILITATION Of MAXILLA GUNShOT TRAUMA: AN EXTREME CASE REPORT.

AfTER

Authors Zouloumis L., Emmanouil I., Psomiadis S., Anagnostou C., Papadiochos I. Aristotle University of Thessaloniki, Greece For the reconstruction of defects of the head and the neck we can use local and microvascular flaps as: 1) Nasolabial flap, 2) Fascial and Fasciocutaneous flaps [radial forearm free flap, lateral arm flap, lateral thigh free flap, superficial temporal parietal fascia flap], 3)Myocutaneous [rectus myocutaneous free flap, latissimus dorsi free flap], 4)Bone flaps [fibula osteocutaneous free flap, scapula free flaps, iliac crest flap]. In our case the patient had a gunshot trauma in the midface zone. The pellets of the shotgun caused loss of bone in both the nasal and the maxillary bones. After the removal of the gunshot pellets a radial forearm flap used for the reconstruction of the area which was injured. For the prosthetic rehabilitation, after the healing period, we used the following procedure: i. As the flap was thick, we used the defating technique in order to minimize its width. ii. As the patient denied having any bone grafting technique we used the residual bone of the posterior maxilla to insert 4

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titanium implants. Two of them had normal size and the other two were mini implants because the maxilla had an extensive bone loss in width. The mini implants were placed at the area of 16 and 26 and the normal size implants at 17 and 27 area respectively. Finally we used an overdenture supported by these implants. The patient after a period of about 2 years is very satisfied with the stability of the denture.

Introduction: Internal elevation of sinus membrane (Summerscondensation technique), is ales invasion than lateral window method, easily acceptable from the patient. Our aim is 1. <<internal>> elevation of the sinus mucosa, until 3mm in order to place (when we have minimum 7mm vertical bone high), longer implants and 2.bone <<condensation>> of the implant bed, in an area of a 3or 4 bone quality. Aim: Aim of this work is to explain that Summers technique is safe and adequate, when we estimate the prerequisites. Such implant placement in molar- premolar region of maxilla is less painful with predictable result, when the surgeon is experienced. Materials and method: Four implants placed to three patients, after 2-3mm elevation. Graft bovine (bio-oss) mixed with autogenous bone, harvested from the area was used. After checking for membrane penetration, the graft was gently compressed in the space we created, with the osteotomes and finally the implant. Results: Nothing pathological was observed after the surgery, or four months later during crown placement. One year after prosthetics the fabrication was stabile without inflammation.

PP 342 REhABILITATION Of AN EDENTOLOUS PATIENT WITh SEVERELy AThROPhIC MANDIBLE USING ONLAy BONE GRAfTS AND IMPLANTS Authors Fatih Mehmet Korkmaz, Alper Pampu, Ozkan Ozkaynak, Figen Cizmeci Senel, Bora Bagis Karadeniz Technical University, Faculty of Dentistry, Trabzon, Turkey Dental implants have been used successfully for decades in the treatment of edentulous patients and offer great comfort compared with complete dentures. Implant supported fixed prostheses have following advantages: good retention, no tissue irritation, great masticatory function and good patient satisfaction but implant placement in the posterior areas of mandible is sometimes limited because of the presence of severely bone resorption and anatomic limitation. In order to restore the severely atrophic mandibles, onlay bone grafting is recommended to create adequate bone volume for the placement of dental implants. This report describes a clinical case of maxillary and mandible implant-supported fixed prosthesis in an atrophic posterior mandible reconstructed by onlay bone grafting after bone block harvesting from the mandibular ramus. A 57-year-old man with an atrophic posterior mandible underwent surgical onlay ridge augmentation under local anesthesia using a block graft harvested from the bilateral mandibular ramus. After six months for healing of augmentation, implantation was performed and the definitive prosthesis was constructed at the end of 10 months. The onlay procedure in atrophic posterior mandible, associated with mandibular ramus graft harvesting, may be considered as an effective, minimally invasive and well-tolerated procedure for implant supported prosthetic rehabilitation.

PP 344 ThE BOTTOM Of MAXILLARy SINUS AS A fACTOR Of IMPLANTS' ADDITIONAL STABILITy Authors Dr. Branislav Stojanovic, Dr. Ivan Stojanovic, Igor Stojanovic, Nada Popovic Private Stomatology Practice Dr. Branislav Stojanovic, Beograd, Serbia Primary stability of built-in implants in the region of the bottom of maxillary sinus is often a big problem due to alveolar resorption and reduced vertical height of the bone. We will present cases from our twelve-year experience of using cortex of the bottom of maxillary sinus in order to obtain additional primary stability of the implant and transfer chaw pressure to compact bone in the region. Installation of implants into the bottom of maxillary sinus with a lift of sinus's mucous membrane with good primary stability creates good conditions for good fixed metal-ceramic protetic work. With the use of this method, one can avoid complicated and agressive method of open sinus lifting in cases where the height of alveolar extension is 6 to 8 mm.

PP 343 SUMMERS TEChNIQUE IMPLANT PLACEMENT Authors Papamanthos M1, Chatzimendos D2, Fkiaras A2, Papadimitropoulou B1, Tapia D1, Galanou M2, Dalampiras S3 Odontoiatric Dept of General Hospital of Volos Dental Surgeon 3 Assistant Professor of Dental School of University of Thessaloniki - Greece

1 2

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ConclusionOsteotomes technique gives the ability to place graft and implants in one stage, in an area with inadequate vertical bone quantity under the sinus. This procedure contributes 2-3mm space under the mucosa, with less bone reveal, so better healing.

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PP 345 ThE USE Of BONE SCRAPER AT DIffERENT ORAL SURGICAL PROCEDURES Authors Dr. Sertan Ergun, Dt. Atilla Uzman, Prof. Dr. Hakki; Tanyeri Istanbul University, Faculty of Dentistry, Dept. of Oral Medicine And Surgery, Istanbul, Turkey The bone scraper is a simple tool used for oral preprosthetic surgery for the last few years. It's use is not very invasive and it can be used under simple local anaesthesia without any major&minor complications. It is capable of collecting adequate amounts of autogenous cortical bone chips from different intraoral sites. It allows localized expansion of the narrow or misshapen alveolar crest and it is also used to retrieve cortical chips of parietal bone for sinus lift. The procedure is effective for treating alveolar defects for endosseous implant insertion and provides goodhealing of small bone defects after grafting with autogenous bone chips. We report the usage of bone scraper at the reconstruction of the bone cavity occurred due to the total excision of dentigerous cycts (22 cases), at sinus lifting procedures (6 cases), at ridge augmentation during implant surgeries (15 cases) and at the reconstruction of the bone for the implant surgery (3 cases).

The clinical case presented here documents that mini-implants are a very success choice for the edentulous patient providing to them accessory support and extra retention for complete removable dentures resolving from common problems and complains.

PP 347 UPPER OVERDENTURE ON IMPLANTS STABILIZED By ADDITIONAL INDIVIDUAL EPILOC RETENTIVE ELEMENT ­ CASE REPORT Authors Smiljanic Zavisa*, Postic Srdjan**, Smiljanic Stefan*** * Stad Dental, Negotin, Serbia; ** Clinic of Dental Prosthetic, The Faculty of Stomatology, University of Belgrade, Serbia ***Dental student; Introduction: Implantology, considered as domain of multidisciplinary dental authority, imposes sophisticated approach to fabrication of suprastructure on implants respecting achievement of biological and functional construction. Purpose of this study was to rehabilitate physiognomy, phonetic and masticatory function of the patient with prosthesissuprastructure on implants in the upper jaw. Materials and method: 3 implants (ISOMED 3.5X13, Italy) were inserted and osseointegrated in a regions of missing roots of 13, 11 and 23, of a 59 year-old patient. His edentulous upper jaw with implants (angled abutments) was impressed using A-silicone elastomer (3M Espe Express STD, Europe div.), and master cast (Galigranit stone, Galenika, Serbia) was fabricated. After mounting (AMMANGIRBACH face-bow, Germany) of cast to articulator (Quick Master B2M, USA) and waxing-up, individually milled rigid bar (RB), shortly extended distally was casted (Wironit ®BEGO, Germany). Passive fit of RB was provided in the mouth. Acrylic overdenture (OD) (Ivoclar acrylic teeth, Europa; Biocryl, Galenika, Serbia) with 4 clips of the fitting surface, specially designed horizontal epiloc retentive elements CM to the right and to the left side and acrylic cut-away in the palate was fabricated and positioned in his mouth. Results: High density +1.3 g/mm2 of bone surrounding implants on control panoramic radiograph, low value of plaque index PI=0.5, speech, masticatory ability as well as absence of supporting tissue's inflammation were excellent result of prosthetic rehabilitation of the patient. Conclusions: Prosthetic rehabilitation on implants using RB attachment and OD with additional retention of individual metal epiloc element is excellent reconstructing option for edentulous patient which couldn't insist on positioning of fixed restoration. Individual retentive element stabilize OD, optimizing occlusal loads and neutralizing stress to implants

Poster Presentaions

PP 346 ThE USE Of MINI-IMPLANTS IN MAXILLA IN PATIENTS WITh VOMITING REfLEX. Authors Mourouzis P., Anagnostou C., Paulidis A., Pachali M., Zouloumis L. Aristotle University of Thessaloniki, Greece The most common problems and complaints from the edentulous patients, who are treated with removable complete dentures in the maxilla due to the anatomic and biomechanical problems, are: a) Poor retention b) Lack of stability c) Chewing discomfort e) Vomiting reflex. Dentists in an effort to alter those problems tried among others to extent the denture bases Among others to extent the denture bases causing pain from the irritation to the soft tissues, a vomiting reflex due to the wrong placement of the denture posterior to the vibrating line on the palate. One treatment plan used to restore the edentulous maxilla is the use of mini-implants. Mini-implants as part of an implantretained maxillary overdenture introduce a new approach in achieving a high volume of retention, stabilization even when they are used in patients with severe residual ridge resorption. In addition the use of mini implants remove the vomiting sense caused by maxilla complete dentures by offering the dentist with the change to palates complete overdentures. In this presented case mini-implants were used in the maxilla in patients suffering from vomiting reflex due to extended bases of complete dentures, at the follow up examination after 2 and 3 years the patients were satisfy by the results and the vomiting reflex was eliminated.

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PP 348 IMMEDIATE RECONSTRUCTION Of MANDIBULAR DEfECT AfTER LOCALIZED RESECTION By AUTOLOGOUS BONE GRAfT USING DENTAL IMPLANTS: A CASE REPORT. Authors Eldar H. Farajov*, Teymur A. Babayev*, Asif M. Arkhmammadov**, Rafig E. Ibrahimov* Azerbaijan Medical University, Faculty of Dentistry, *Department of Oral and Maxillofacial Surgery, **Department of Prosthodontics. Immediate reconstruction of defects of jaws after removal of small tumors represents a special interest for oral and maxillofacial surgeons. This procedure reduces the term of treatment and rehabilitation of patients. Thus usually use autologous bone grafts, xenografts, allografts. Patient, 18 years old female is presented in this report. Clinical and radiographic examinations were carried out. Pathological condition in the 31, 32, 33, 34 teeth area was observed. Histopathologic investigation was carried out after biopsy and result was recorded as mandibular fibrous dysplasia. Localized resection and reconstruction of mandibular defect was recommended. Affected part of mandible was resected and defect in the size of 33mm in length and 20mm in height was reconstructed by iliac bone graft using sandwich placement. Bone blocks were fixed among themselves and to mandible by two one-stage dental implants in length 24mm and diameter 2,8mm. The bone grafts were completely covered by soft tissues. Total healing of soft tissues was observed. Any postsurgical complications had not been found out. Dental arch defect was closed by temporary removable partial prosthesis. Clinical and radiographic examinations were carried out after 6 month. Any later complications had not been found out. Fixed prosthesis supported on implants was fabricated. Treatment and rehabilitation of patient had been finished successfully and anatomy, function and aesthetics of affected side were restored. This patient was observed for 3 years after rehabilitation. The condition of soft tissues and stability of implants were normally.

6. Weak: Low ultimate strength (and low yield strength). 7. Strong or fracture resistant: High ultimate strength. We made the first prostheses from the material Adoro for the repairment of the ossicular chain (PORP sand TORPs) and we put them in a different environment ­the middle ear. With SR Adoro, a C&B veneering material that is suited to a wide range of indications has been developed. The material is characterized by high resistance to wear, a homogeneous material structure, excellent shade stability and outstanding resistance to the conditions in the oral environment. As a conclusion we would like to once again underline the excellent acoustic characteristics of the prostheses made of the material Adoro.

PP 350 ThE EffECT Of RESIN COMPOSITE PRE-hEATING ON ThE MICROhARDNESS Mustafa Ersoy, Kagan Gokce, Mubin Soyman The aim of this study was to evaluate the microhardness of a new composite material (Filtek Silorane) (3M Espe), at room temperature (23°C), or pre-heated at 37ºC, 54ºC and 68ºC. 9 composite discs (n=9) (6x2 mm) were prepared from Filtek Silorane at room temperature or pre-heated to a temperature of 37ºC, 54ºC or 68ºC by Calset (Composite Heater Unit) (AdDent). The samples were polymerized by Optilux 501 light curing device for 20 seconds. Then the prepared samples were incubated at 37ºC for 24 hours in distilled water. Following this procedure, microhardness measurements (Buechler) were done under 300 g loading for 10 seconds. Statistical analysis was performed using One Way ANOVA. The samples which were prepared with the resin pre-heated to a temperature of 37ºC and 54ºC showed significantly higher microhardness values than the samples prepared with the composite at room temperature. No statistically significant difference was determined between the composite used at room temperature or pre-heated to a temperature of 68ºC.

PP 351 SOCIAL STATUS Of ThE BULGARIAN DENTIST PP 349 ADORO-A COMPOSIT fOR DENTIST AND OTOLOGISTS M. Milkov, Ts. Dikova, M. Abadjiev Faculty of Dental Medicine, Medical University of Varna, Bulgaria It processes excellent mechanical characteristics. The laboratory test show: 1. Flexible or soft: Low modulus of elasticity. 2. Stiff: High modulus of elasticity. 3. Ductile: The material shows high amount of plastic flow. THE BREAK POINT OCCURS AT MUCH HIGHER STRAIN VALUES THAN THE YIED POINT. 5. Brittle: The material shows no yielding or flow and breaks just above the elastic limit. 1. Dental Clinik I, Varna 2. Deaprtment of Economics and Health Care Management", Medical Unversity Varna 3. Deaprtmetn of Social Medicine and Health Care Organisation, Medical University Varn Summary: Doctors and patients are the two key elements in the health care system. Most discussed are the problems of the patients? But what about doctors? What is the physician's social status in Bulgaria today? The paper presents results from a pilot sociological study of the social status of the Bulgarian doctor. The study was carried out in December 2008 among seventy five dentists from Authors Kamen Nogaltchev1, Zhana Rangelova2, Klara Dokova3

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Northeastern Bulgaria. We studied the self-assessment of the dentist status and factors influencing it through a structured self-administered questionnaire including 43 questions. Key words: social status, self-assessment, anesthesiologist, doctor, health care

PP 352 COMBINED SURGICAL AND ORThODONTIC TREATMENT Authors S. Novakovic-Carevic, Lj. Stojanovic, B. Skufca Health Center Stari Grad, Serbia School of Dentistry University of Belgrade, Serbia Military Medical Academy, Serbia Retained permanent teeth in frontal region of upper jaw are quite often, which can cause serious functional and aesthetical problems primarily in younger population. There fore the purpose of this study is to point out that combined surgical and orthodontic approach is most effective in treating such orthodontic disorder. Five patients, both sexes, age 11-25, with unilateral and bilateral retained permanent upper central incisors were involved in this study. Using clinical, gnatometric and ortopantomographic analysis, surgical and orthodontic treatment was carefully planned and performed. After surgical treatment (denudation) and attachment of the central incisors to upper fixed orthodontic appliances, retained teeth were slowly pulled down during next 8-24 months (depending on the retained teeth location), and placed in proper position at upper jaw dentition. In order to remain constantly at the placed position, the teeth were fixed by mobile retainers for additional six month period. As a result, patients have regained proper mouth function and faces with happy smile. Combined surgical and orthodontic treatment of retained teeth, even thou, that takes little longer treating period, which requires high motivation, great effort and constant collaboration of patients, is the most effective approach in accomplishing satisfactory functional and aesthetic demands.

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Index

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Index

A

Abadjiev M. 175 Abadjiev Metody 25 Abadzhiev M. 90 Abadzhiev Metodi 31, 38, 172 Abdullah Kalayci 83 Ademaj-Kutllovci Teuta 20, 34 Ademi R. 144 Adem Kusgoz 60 Adil Nalcaci 36 Adil Raka 169 Agani Z. 133, 141 Agani Zana 144 Agim Islami 51 Agop M. 54 Ahmedi J. 141, 144 Ahmet Arslan 42 Ahmet Gul 51 Ahu Topkara 26 Aida Rexhepi 169 Ajanovic I 160, 164 Ajshe Rexhepi 152 Akbay-Oba Aylin 67 Akcam Okan 150, 153 Akin E 133 Akyuz Sefika 48 Alamgkout P. 22 Aleksandrova M. 126 Aleksic Zoran 39 Alexandrescu Dan 150 Alexandrescu Ozana 150, 156, 158 Alexandrescu Sanziana 150 Alexiou Theodoros 79 Ali Erdemir 103, 104, 105 Ali Karahanoglu 26, 36 Ali Mavis 67, 101, 107, 162 Alina Iren 100 Ali Turkyilmaz 103 Alketa Qafmolla 66, 157 Almagkout P. 22, 41, 43, 45 Almiro Gurakuqi 28 Alper Akcay 47 Alper Pampu 173 Alper Sinde 138 Altanlar N. 68 Altun C 164 Amet Demiri 140 Amila Brkic 138, 143, 171 Aminov Liana 106 Anagnostou C. 38, 172, 174 Andis Qendro 144 Andjelic Jasminka 153 Andjelkovic A. 94 Andonov Bogomil 21 Andrei Victoria 100 Andrian Sorin 71, 168 Andritoiu D 58 Andritsakis Panagiotis 23, 24 Angelov I. 82 Anistoroaei Daniela 154, 158 Ankica Jakovljevic 70 Antohe Magda 32, 54 Antoniades Kostas 113, 134, 138 Antonijevic Biljana 113

Antovic Ivana 112 Antunovic Marija 84, 137 Apostolide Dana 71 Apostolova G. 140 Arhun Neslihan 69 Aris-Petros Tripodakis 23 Arkhmammadov M. 175 Arnautska Hr. 149 Arslan Ipek 167 Arslan Malkoc 81 Arzu Aldemir 67, 101, 107 Arzu Bayalan 106 Atanasov D. 83 Atanasovska-Stojanovska Aneta 121 Atilla Atac 47 Atilla Ertan 85 Atilla Uzman 174 Augusto Carlos 61 Avramovic Danijela 161 Avsever H 82, 83, 88, 92, 133, 164 Avsever H. 92 Ayberk Altug 129 Ayce Eldeniz 103 Aydin Gulses 135 Aydogan Elif 58 Ayhan Gurbuz 88 Aylin Alacam 151 Ayse Altug-Atac 160 Aysegul Cali 104, 110 Aysegul Koklu 29, 148 Ayse Gulsahi 35, 57 Aysegul Tuzuner 131 Aysegul Unluyol 29 Ayse Kalkanci 86 Ayyildiz S 88 Azem Ismani 152

B

Bagis Bora 58 Bahadir Gurbuzer 112 Bajevska J 80 Bajevska Ja 80 Bajevska Stefanoska 80 Bajric E 170 Bajrovic N. 125 Bakardjiev A. 50 Bakardjiev Angel 133, 134 Bakarjiev Angel 44 Balcheva M. 90 Balcheva Miglena 172 Bandoiu 58 Banita Monica 121 Bataiosu Marilena 100, 102 Begzati Agim 20, 34 Begzati-Rexhepi Ajten 20 Behara Dusica 94 Behara M. 80 Behara Mladen 67, 94 Beljic-Ivanovic K. 108 Beloica Milos 61 Beltcheva A. 33 Beltes Panagiotis 46 Bengi O 147 Bengi Oztas 92, 98, 99 Bengisu Gergin 121 Beniz Gunduz 103 Berkan Celikten 104 Berkem Atalay 49 Berna Aslan 69 Berna Oze 160

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Berna Ozel 29, 151, 159 Berna Turgut 85 Berrin Dayangac 61 Besim Boci 145 Beuran Irina 154 Bilgin S 78 Bilhan H 83, 88 Biljana Knezevic 55, 113 Blagojevic Duska 112 Blahic Larisa 31 Blazic L. 71 Blazic Larisa 112 Blerim Mehmeti 152 Bogdan Mavru 158 Bojkovska Diana 118 Bora Bagis 30, 31, 40, 86, 173 Boteva Ekaterina 45 Boyanova L. 13 Bozovic-Behara D. 80 Bozovic Djordje 24 Bozovic Dusica 113 Bozovic Milos 112 Bratu Adrian 172 Bratu Cristina 148, 150, 155, 157, 172 Bratu Elisabeta 155, 157 Brkic Zlata 77, 130 Brmbolic B 123 Brovia Diana 20 Brovina Diana 108, 168 Bucur Alexandru 146 Bulakbasi N 149 Bulem Yuzugullu 35, 57 Bulent Uludag 36, 86, 170, 171 Bundalevska Ana 58 Burcu Coven 160 Burcu Oktay 122 Buyukozer T 81

Chatzimendor D. 50 Chatzimendos D 173 Chis A. 33 Chlopsidis P. 135 Cholakova Radka 44, 164 Cigdem Celik 35, 61 Cihan Akcaboy 85 Ciuca Felicia 81, 87 Ciurcanu Oana 132 Cogalan Kemal 76, 86 Colic M 107 Commisionat Y. 38 Cora Sabri 58 CorbiSergio 37 Curcic Marijana 113

D

Dabakoglu Behiye 77 Dalampiras S 173 Dalampiras S. 50 Dalampiras Stelios 55, 56, 118 Danila Catalina 42, 122, 127 Dascalu Cristina 32 Daskalov Hr. 137, 142 David Gabriele 20 Dedic A. 95, 96, 125 Deliktas Deniz 68 Deliverska E. 132, 139 Demertzi Eleni 53 Demirel G. 68 Deniz Sagdic 145, 146 Derya Akkurt 155 Despa Elena 158 Diaconu Oana 100, 102 Dikova Ts. 175 Dimitrova M. 168 Dimitrova Mariana 129, 164, 166 Dimitrov S. 82 Dimova C. 48, 111 Dinca Octavian 146 Dincer Yilmaz 135, 167 Dinkova A. 50 Dinkova Miroslava 28 Dionysopoulos D. 72 Dionysopoulos P. 72 Dirikolu Husnu 48 Divani Smaroula 95 Djurickovic Mirjana 161 Djuric Tatjana 77, 130 Djurisic S. 76, 82 Djurovic Aleksandra 166 Dogan Oztas 26, 36 Doichinova Lili 70, 104 Dokova Klara 175 Dorian Kostandini 141, 142, 143 Doygu Yazioglu 131 Draganjac M 37, 89 Dragomir Raluca 106 Drangov M. 120 Duborija A. 147 Dukic Smiljka 77, 130 Durickovic Mirjana 165 Durkan Rukiye 58 Dusica Behara 55 Duygu Akkor 67, 69, 101, 107 Dyulgerova E. 46 Dzambas Lj. 94 Dzeletovic-Milosevic Irena 135 Dzenad Ganjola 135 Dzipunova B. 140

C

Caglar Alper 69 Caglayan F. 128 Caglayan G. 128 Cagri Bardak 139 Cagri Delilbasi 42, 141 Cahut Ucok 131 Cairovic A. 76 Canan Hekimoglu 85 Canan Ogan-Hascicek 106 Canan Onder 125 Carausu Mihaela 127 Carevic M. 22 Carevic Momir 113 Carvalho Ramos 61 Cavdar Esma 100 Cavidan Akoren 86 Cazacu Maria 54 Cebeci Ilker 57 Cehajic V. 125 Cekov Darko 131 Celiana Toti 28, 153 Celik Cigdem 60, 62 Cem Gurgan 127 Cengiz Gadimov 27 Cetin Ali 59 Cetiner S. 111 Ceyda Tomruk 140 Ceyhan Altun 167 Ceyhun Aricioglu 43 Ceyhun Canpolat 23 Chaprashikyan On. 75

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E

Ebru Bodrumlu 109 Ebru Erdemir 40, 126, 129 Edit Xhajanka 66 Ediz Deniz 51, 141 Eftene Oana 154 Efthimiadis Nicolas 41, 44 Eldar Farajov 175 Elif Aydogan 127 Elif Sadik 51 Elsa Aliaj 166 Elsa Alija 143 Elvan Pala 50 Emel Onay 47 Emilov D. 119 Emine Nalcaci 162 Emmanouil I. 172 Emrah Emral 160 Emre Bodrumlu 109 Emre Yaprak 128, 130 Ender Kazazoglu 23, 25, 87, 109 Endrit Alija 142 Engin Kocabalkan 29 Eno Gace 166 Eray Kolsuz 91, 138 Ercan Durmus 43, 83 Erdal Erdem 50, 91, 98, 138, 139 Erdal Eroglub 66, 89 Erdem Akagunduz 90 ErdemirAli 48 Erdin Koyuturk 145, 146 Erhan Ozdiler 151, 159, 160 Erhan Tahan 106 Erkmen Merve 67 Er Kursat 167 Erkut Selim 60, 62 Erol Akin 90 Ersin Selcuk 42 Ertan T. 117 Ertan T. 115 Ertugrul C. 117 Ertugrul C. 115 Ervin Veizaj 141 Esma Yildiz 33, 34 Esra Baltacioglu 40, 127 Esra Eyupoglu 138 Esra Parlak 109 Evsen Tamam 30 Exarhou M. 50 Exarhou Maria 95

Filipova Milena 73 Filiz Aykent 83 Filtchev D. 24 Filtchev Dimitar 39 Fkiaras A 173 Fkiaras A. 50 Foco F. 96 Forna Doriana 32, 54 Forna N. 14 Forna Norina 32, 38, 54, 136 Fornengo Bruno 89 Frida Ferhati 143, 166 Fugen Dagli-Tasman 47 Funda Yuksel 139 Fylatos C. 89

G

Gabriel Moisa 103 Gace Eno 161 Gajic-Stevanovic Milena 117 Galanou M 173 Galanou M. 135 Galeos Minas 23 Gamze Alniacik 83 Gamze Zincircioglu 130 Ganibegovic Maida 35 Gashi A. 144 Gavrilovic I. 140 Gazivoda D 107 Geeorgiev T. 149 Georgescu Andrei 71, 99, 168 Georgescu M 58 Georgiev K. 111 Georgiev Z. 48, 111 Gerasimou P. 72 Gheorghe Angela 71 Gheorghita Lelia 100, 101 Gianina Iovan 71 Girdea Marta 108 Gjinolli F 133 Gjynele Demiri 140 Glavan Florica 150, 157 Glisic M. 76 Gloria Staka 51 Gocmen Sedef 67 Gogos Christos 107 Gojkov-Vukelic M. 124 Gokalp Karaman 47 Gokce S 147, 154 Gokce Soganci 77, 85 Golovcencu Loredana 154 Golubovic Mileta 137 Gonca Duygu 43, 49, 97, 142 Goracci Cecilia 61 Goranova-Marinova Vesselina 133 Goranov Stefan 133 Gordana Kovacevska 116 Gorgulu S 133, 147, 149 Gorgulu S. 117 Gorgulu S. 115 Goussias Hercules 23, 24 Guilhem Romieu 90 Gulce Subasi 74 Gulcin Bermek 114 Gulerik Ahmet 74 Gul Ozgunaltay 61 Gulsahi Ayse 57 Gulsahi Kamran 60, 69 Gulsin Bermek 21 Gulsun Yildirim 43, 130

F

Farcasiu C. 33 Faruk Basciftci 27 Fatih Cabbar 97, 142 Fatih Korkmaz 31, 173 Fatih Mehmet Korkmaz 25 Fatih Ors 90 Fatma Boke 120, 125, 127 Fatmagul Ziraman 104 Fatma Unalan 78 Fatmir Bilaj 158 Fatmir Lelaj 132, 152 Fatu Ana 99 Fehmi Gonuldas 26, 36 Fentoglu Ozlem 79 Ferija Sali 152 Ferrari Marco 61 Figen Senel 173

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Gul Tosun 33, 34 Gulumser Colok 92 Guncu G. 128 Gunduz Bayirli 87, 109 Gunduz H 82 Gunduz K 83, 92, 133 Gunduz K. 92 Guney Volkan 150 Gur G. 68 GurganA. 130 Gurgurieva V. 26 Gurkan Goktug 170 Gusiyska A. 46, 52 Guven G 164

Ivanova Yana 150, 155, 172 Ivanovic Mirjana 165 Ivchev Manol 28 Ivkovic Nedeljka 24

J

Jakup Vrioni 144, 145 Janackovic Dj. 73 Jankovic Sasa 39 Jankovic Svjetlana 34, 165 Jankulovska M 49 Jelena Jeremic 44 Jelenkovic A 76 Jelenkovic A. 79, 82 Jeremic Knezevic M. 94 Jevremovic Danimir 31, 37, 81 Jianu Rodica 150 Jovanovic Ivan 106 Jovanovic-Medojevic Milica 109 Jovicic B 124 Jovicic B. 89 Juloski Jovana 109

H

Hadjigaev V. 83 Hadjigaev Y. 83 Hadjigeorgiev Georgi 133 Hadzic S. 96, 124 Hadzimuratovic V. 96 Hakan Avsever 167 Hakan Kurt 98 Hakan Tuna 84 Hakki Sema 60 Hale Ari 130 Hamburda T 110 Hamburda T. 106 Hamit Bostanci 121 Hamiti-Krasniqi V. 141, 144 Hanife Ataoglu 136 Hasic-Brankovic L 20 Hasic-Brankovic L. 114 Hatice Aan 131 Hatice Gokalp 148 Havva Eroglu 120 Hayriye Sonmez 169 Hazem Melad 50, 91, 98 Hilal Sonbay 101 Hilmi Sabuncu 68, 72 Hodzic M. 96, 124 Hoxha Ergysejda 20, 168 Hoxha rgysejda 108 Hristozov M. 31 Hulya Kocak-Berberoglu 138 Husaric B. 125 Huseinbegovic A 170

K

Kaan Gunduz 167 Kaan Orhan 167 Kabaktchieva Rossitza 34 Kadriye Peker 21, 114 Kagan Gokce 68, 72, 175 Kahveci Fatma 61 Kaleva N. 165 Kalimeri N. 29 Kamran Gulsahi 47 Kantaraki Eleni 55, 56 Kantardzic A. 96, 125 Kantardzic I. 71 Kantardzic Ivana 102, 112 Kapur-Pojskic Lejla 52 Karacayli U 92, 133, 147, 154 Karacayli U. 92 Karacay S 147, 149, 154 Karageorgou Eutyxia 46 Karancsi Olimpiu 172 Kari Kirsti 115 Kassampali Maria 53 Katrova Lydia 56 Katsikogianni E. 36 Katsikogianni Eleni 55 Katzarov S. 31 Katzarov Stojan 25, 30 Kazazoglu Ender 77 Kedici Cemile 73 Kelmendi Manola 20, 108, 168 Kemal Okcu 135 Kemal Sahmanovic 116 Kemal Sencift 42, 49, 141 Kerem Askin 47 Kirova Donka 44 Kissov H. 82 Kissov Hristo 30 Kivanc Kamburoglu 98 Kivanc Ulusoy 66, 89 Klodiana Leka 158 Klodian Shahu 158 Klodian Zani 142 Knezevic B. 80 Knezevic Biljana 94 Kobaslija S 20, 114, 170 Kocabasoglu A 59

I

Ibrahim Behluli 51 Ibrahimov Rafig 175 Icheva A. 162 Idil Dikbas 78, 85 Ilhan Ramoglu 151 Ilieva Emilia 44 Ilijevic Jasmina 122 Ilkay Peker 51, 91 Ilkay Ulusoy 90 Iniz Ajeti 139 Ioannidis Konstantinos 46, 53 Ionescu Ecaterina 156 Iordache Cristina 99 Ipek Satiroglu 31 Isayev Abulfaz 76, 86 Isheva Alexandra 163 Isil Saygun 129 Isin Kurkcuoglu 84 Islami Agim 86 Ismet Duran 128, 129

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Kocacikli Mustafa 74, 75, 78 Koco Gjilo 132, 152 Kodonas Konstantinos 107 Koidis P. 89 Koidis Petros 79 Kojic Z. 73 Kolarov R. 13 Koliniotou ­ Koumpia E. 72 Koliniotou-Koumpia E. 72 Kolokotronis A. 135 Kondeva V. 162 Kondeva Veselina 161, 162, 163, 164, 167 Konjhodzic H 20, 114 Korac F 20, 114 Korkmaz Fatih 58 Korkmaz Turan 75 Kose M 82 Kostakou Evgenia 55, 56 Kostas A. 38 Kotsilkov K. 118, 119, 120 Koulaouzidou E. 128 Kovacevska I. 48, 111 Kovijanic Stanka 161 Krmek Mirjam 112 Krsljak E. 56 Krumova V. 26 Kubra Atici 103 Kucukesmen Cigdem 60 Kukleva M. 162 Kukleva Maria 161, 162, 163, 164, 167 Kurkcuoglu Isin 79 Kusgoz Adem 73, 167 Kussovski V. 82 Kyriazos Alkis 70, 113, 117

L

Lacevic A 160, 164 Lalabonova Hr. 137, 142 Lambrianidis T. 47 Lambrianidis Theodoros 12, 46 Lamprianidis Theodoros 53 Lanara Rodopi 70, 92, 93, 94, 113, 117, 134, 138 Latkovic M 123 Lazaridis Georgios 70, 92, 93, 94, 113, 117, 134, 138 Lazic Z 124 Lekic M 20, 114 Lekovic Neven 166 Lekovic Vojislav 39 Levent Ozer 159 Levent Pikdoken 112 Lindita Xhemnica 153 Lojo-Kadric Naida 52 Lopicic Aleksandar 84, 137 Luca R 58 Luca R. 33 Lukic A 107

M

Madalina Olteanu 101 Maftei Mihaela 95 Mahmut Sumer 134 Mandic Bojan 45, 138 Mandic Borka 45, 138 Mandic Jelena 111, 113, 114 Mandinic Zoran 21, 111, 112, 113 Manolea Horia 100 Manolova M. 90 Manolova Maria 21 Mantareva V. 82

Marasescu Petre 81, 87 Marcov Elena - Cristina 49, 57 Marcov Elena -Cristina 53 Marcov Narcis 49, 53, 57 Margaritescu Claudiu 100 Margvelashvili Mariam 61 Maric Nina 161 Marjan Aslani 40 Markova K. 120 Markova Kr. 90 Markovic D. 73 Markovic Dejan 166 Markovic Nina 35 Martha Krisztina 28 Martu Silvia 42, 108, 122, 123, 126, 127, 170, 171 Mastoras Konstantinos 107 Matei Ruxandra 150 Matera Gabriele 37 Matijevic Snezana 163 Mazinis Emmanuel 41, 44 Medojevic Aleksandar 109 Mehmet Kayahan 87, 109 Mehmet Kolsuz 98 Mehmet Kurkcu 43 Mehmet Ozel 29 Mehmet Ozel, 151 Mehtap Bilgin 131 Meindani Maria 23, 24 Melian A 110 Melian Anca 106 Melian G 110 Melih Ates 31, 127 Meltem Akyol 103 Meltem Karsiyaka 40, 126, 129 Meltem Oztan 103 Meral Gunhan 128 Mercut Veronica 81, 87 Meric Altun 110 Meryem Alkurt 51 Meryem Toraman Alkurt 91 Meskule Sahin 125 Mete Ungor 47 Metin Sencimen 135 Meto Agron 105 Meto Aida 105 Meurman Jukka 115 Mihri Amasyali 112, 145, 146, 155 Mihtikar Gursel 130 Miketic Djordje 38 Mileusnic Ivan 42 Mileva S. 165, 168 Mileva Stanimira 129 Milic A. 76, 79, 82 Milica Popovic 70 Milicescu Viorica 156 Milic Jasmina 156, 158 Milinkovic Iva 39 Milkov M. 175 Milosavljevic Zeljko 27, 149, 152 Milosevic Biljana 161 Milosevic Irena 91, 97, 118 Milton Rroco 153 Minciarelli Armando 37 Mirkovic N 37, 89 Mirkovic N. 124 Misovska K. 80 Mitevski A. 48 Miyase Cinar 104, 105 Mlachkova A. 119 Mladen Behara 55, 113 Moise Gabriela 158

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Moise Marcel 155 Mojovic Snezana 114 Moldovanu Antonia 71, 168 Molyvdas I. 47 Moraru Iren 100, 101, 102 Mourouzis P. 128, 174 Mubin Soyman 175 Muhammet Emral 152 Mujde Sevimay 32 Muje Shala 169 Mumcu E 83, 88 Murat Akkaya 131 Muratbegovic Amra 35 Murat Bilginer 128 Muratovic Ivana 156 Muric Branka 31 Mustafa Cakir 136 Mustafa Ersoy 68, 72, 175 Mustafa Kocacikli 25, 30, 77 Mustafa Tunali 112 Mutavdzic Andreja 83, 97, 118, 135 Mutlu Ozcan 40

Ozden Sehrazat 57 Ozdiler Erhan 29 Ozen B 164 Ozen T. 92 Ozge Demirkol 49 Ozge Uslu 148 Ozgun Karakus 128 Ozgun Ozyilmaz 32 Ozgur Inan 74 Ozkan Ozkaynak 135, 173 Ozkocak I. 111 Ozlem Gurbuz 78 Ozlem Ogretir 135 Ozlem Sarac 127 Ozlem Ucok 90 Ozturk A 81 Ozturk A. 78 Ozturk B 81 Ozturk Bora 60

P

Pachali M. 174 Pagovski D. 80, 126 Panaiotov I. 90 Pancheva N. 24 Pancu Galina 71, 168 Pantea Dragos 150, 156, 158 Pantelic D. 71 Pantelic Dejan 31 Papadimitropoulou B 173 Papadimitropoulou V. 50 Papadiochos I. 172 Papamanthos M 173 Papamanthos M. 50, 135 Papamanthos Matheos 95 Pasic E. 96, 124 Paulidis A. 174 Pavlevska M. 49 Pechalova P. 33 Pechalova Petia 133, 134 Peeva M. 49, 140 Peiulescu Constanta 49 Pejanovic Djordje 44 Pepa Pjeter 161 Perihan Ozyurt 67, 69 Perjuci F. 144 Peruze Celenk 134 Pervin Imirzalioglu 57 Petkova D 67 Petro Enida 20, 108, 168 Petrova S. 168 Petrova Svetla 129, 164, 166 Petrovic Ljubomir 102 Petrovic V. 44 Petrunov V. 26 Petsa Eleni 66, 74 Pinar Demir 159 Pinar Sumer 134 Pirinska Radoslava 70 Pisevska-Colakova N. 140 Pisevska N. 49 Piskin B 82, 92 Piskin B. 92 Pisogianakis A 45 Pisogianakis A. 22, 43 Pisoschi Catalina 121 Pissogianakis A 41 Pissogianakis A. 22 Popa Cristina 95, 136 Popa Raluca 123

N

Nazile Kechagia 151, 159 Nedic M 124 Nedim Ozer 140, 141 Nejat Arpak 13, 122 Nesimi Buyukbabani 51 Nesrin Anil 85 Nesrin Hasirci 86 Nicolaescu Valerian 170, 171 Nihan Aksakali 143 Nihat Akbulut 92 Nikolic-Pejovic E. 56 Nikolic Predrag 27, 149, 152 Nikollaq leka 143 Nikollaq Leka 141, 142, 158 Nikolova-Varlinkova Kremena 34 Nil Comunoglu 97, 142 Nilufer Tarimci 106 Nisa Uygun 128 Nmani A. 141 Nogaltchev Kamen 175 Norina Forna 41 Novakovic-Carevic S. 176 Nurhan Guler 43, 49, 97, 133, 136, 142

O

Obradovic-Djuricic K. 73 Ogodescu Alexandru 148, 155, 157 Ogodescu Emilia 148, 157 Oguz D 82 Oguz Eraslan 32 Okan Akcam 152, 159, 160 Okcu K 147 Olaru A 58 Olmez H 154 Omer Gunhan 131, 134 Omer Uysal 21, 114 Onay Olga 69 Onder Gumus 84 Ongun Saka 104 Orhan Guven 140 Orjeta Tonuzi 145 Osman Sejfia 169 Ozana Alexandrescu 103 Ozcan Canturk 86 Ozden Ahmet 69

185

Poster Presentaions

Proceedings of BaSS 2009

Popa Vanda 127 Popean Ioana-Cristina 160 Popescu Eugenia 95 Popescu Manuela 146, 154 Popescu Mihaela 81, 87 Popova Chr. 118, 119, 120 Popova E. 82 Popovic D. 56 Popoviciu Olivia 146, 154 Popovic Nada 173 Popovska Mirjana 121 Poriazova Elena 133 Poshi K. 137 Postic Srdjan 23, 174 Prekazi ­Loxha M. 141 Prekazi-Loxha M. 133, 144 Psimma Christina 66, 74 Psimma Zoi 66, 74 Psomiadis S. 38, 172 Puletic-Lukic G. 21 Puletic-Lukic Gordana 114 Puskar T. 71 Puskar Tatjana 31, 37 Pustina-Krasniqi Teuta 86

Q

Qafmolla Alketa 161 Qafmolla R. 13 Qamirani S. 137

R

Radeva Elka 101 Radovic Igor 34, 165 Radovic Ivana 61 Radovi Ivana 12 Radovic K. 76, 79 Radulovic Aleksandra 84 Raka Adil 20 Ramazan Isufi 144 Ramic Jasmin 52 Ramzan Isufi 145 Rangelova Zhana 175 Ranin L. 123 Ravanis Paraskevas 23, 24 Redzepagic S. 95 Redzic A. 95 Renan Endogru 128 Rimalovska S. 162 Rimalovska Sevda 163 Rosela Rroco 28 Rozela Rroco 153 Rubiev M 132 Rubiev M. 139 Rudnic Erica 127 Rudnic Ioana 42, 122, 123, 126, 127, 132 Rukiye Durkan 31 Ruseva E. 24 Ruseva Elitza 39 Rusu Darian 148, 157 Ruxandra-Ilinca Matei 103 Ruya Yazici 61 Ruzhdie Qafmolla 145, 157, 158

S

Sabri Cora 106 Sabri Ramoglu 27 Sader R. 38 Sadowski Wolfram 11

Sagdic D 149 Sahinkaya E. 117 Sahinkaya E. 115 Salceanu M 110 Salceanu Mihaela 106 Salihu S. 133 Samanidou Victoria 46 Samoila Irina 160 Santrac Marijana 122 Sarafian Victoria 73 Sari O. 117 Sari O. 115 Saroglu-Sonmez Isil 67 Sasa Spasojevic 113 Savic M. 94 Savic- Sevic S. 71 Savic-Sevic Svetlana 31 Saziye Sari 169 Scekic J. 56 Scepanovic-Djurovic A. 147 Sebahat Gorgu 98 Sebnem Kursun 92, 99, 139 Seda Can 34 Sedanur Ustaomer 40, 127 Sedat Cologlu 97, 133 Seeberger Gerhard 11 Sefika Akyuz 104, 105 Sejfija O. 133, 141, 144 Selim Erkut 26, 36 Sema Murat 88, 98 Semerdjieva Maria 115 Semra Kustimur 86 Semra Sevimay 103, 106 Senel B 92 Senel B. 92 Sengun A 59 Sengun A. 54 Sengun Abdulkadir 60 Sengun bdulkadir 61 Seniz Karacay 112, 155 Sentut F 82 Serdar Polat 171 Ser Filip 42 Serkan Er 67 Sermet Sahin 129 Sertan Ergun 174 Sevdi Rexhepi 152 Sevgi Oncel 129 Sevketbeyoglu H 82 Shala Kujtim 86 Sharkov Nikolai 161, 162, 164, 167 Sherif Shaqiri 84 Shopova D. 120 Sibel Ozenci 98 Siddik Malkoc 27 Silvia Martu 41 Simeonovski V. 80, 126 Simonovic A. 79 Sita Radu 172 Sivge Akgun 125 Skoulakis Haralambos 95 Skufca B. 176 Skulakis Ch. 135 Smiljanic Stefan 174 Smiljanic Zavisa 174 Smiljka Dukic 124 Smrekic Bojana 34, 165 Sofika Qamirani 141, 142, 143, 158 Soganci Gokce 74, 75, 78 Solomon Sorina 127 Sonat B. 110, 111

186

Proceedings of BaSS 2009

Poster Presentaions

Sorina Solomon 126 Sotiri V 45 Sotiri V. 22, 43 Sotiri Venetia 41 Spasojevic Sasa 94 Spasojevic Svetlana 116 Spiroski Mirko 121 Staka Gloria 75 Stamatova Iva 21, 73, 115, 116 Stancic I. 76, 79, 82 Stanciulescu Camelia 121 Stavrianos C. 36, 51, 93 Stavrianos Christos 55, 92, 93, 94 Stavrianou D. 51, 93 Stavrianou Despina 93 Stavrianou Eirini 92, 93, 94 Stavrianou I 36 Stavrianou I. 51, 93 Stavrianou Irene 55, 93 Stefanova V. 90 Stefanova Vesela 21, 116 Stefanovic Gordana 169 Stelea Carmen 95, 136 Stelea Lorin 136 Stevanovic Radoje 165 Stojanovic Branislav 173 Stojanovic D. 73 Stojanovic Igor 173 Stojanovic Ivan 173 Stojanovic Lj. 176 Stojanovic Milivoje 54 Stojanovic Zdenka 156, 158 Stojanovic Zorica 54 Stojic Dragica 24 Stojicic Sonja 53 Stoleriu Simona 71 Stratul Stefan 148, 157 Stroici Carmen 168 Suat Yalug 25, 77 Subotic D. 147 Subotic Danijela 169 Suciu M. 28 Suciu Mircea 81, 87 Sukru Enhos 129 Sule Bulut 35 Suleyman Khalil 159 Suljak-Loncarevic A. 95 Surena Vahabi 40

Todorov R 67 Tolga Edebal 110 Tolidis K. 72 Tomov G. 16 Tomov Georgi 21, 48 Tonchev Ts. 144 Tonin Kacorri 141 Tonuzi O. 137 Topalova-Pirinska Snezhanka 70, 104 Topoliceanu C 110 Topoliceanu Claudiu 71 Topouzelis N. 29 Tortopidis D. 89 Tosic N. 102 Tosic Nikola 83 Toulia E 89 Toygar Memikoglu 159 Trajkov Dejan 121 Trako N 160, 164 Traykovski A. 80, 126 Tretiakob G 36 Tretiakob Georgios 55 Trifkovic Branka 81 Tripodakis Aris-Petros 24 Tsanova Snejana 21 Tsirevelou P. 135 Tsirevelou Paraskevi 95 Tsironis Christos 55, 56 Tsompanidis G 44 Tsompanidis G. 47 Tuba Telcioglu 134 Tuculina Mihaela 100, 101, 102, 121 Tugba Kayasu 148 Tuna Hakan 79 Tuncer Dt. 140 Turkyilmaz Ali 48

U

Ucok O 83 Ufuk Hasanreisoglu 86 Ufuk Iseri 136 Ugur Meric 143, 171 Ulas Oz 160 Ulker Esra 60, 61 Ulker Gus 51 Ulker He 54 Ulker M. 54 Ulker Mustafa 60 Ulusoy Mutahhar 76, 86 Ulusoy Nuran 68 Umut Altay 130 Umut Tekin 140 Ungor Mete 69 Unlu Nimet 59 Ustaomer Sedanur 58 Uzelac Milan 38

T

Tamer Tasdemir 106 Tanase M. 33 Tancan Uysal 145, 146 Tanriver Mehmet 60, 73 Tapia D 173 Tapia D. 50 Tarasenko Aleksandra 112 Tatarciuc Monica 87 Tatjana Djuric 124 Tekic Jasmina 21 Temel Koksal 85 Teodorescu Elina 156 Teodorovic N. 108 Teodorovic Nevenka 117 Teymur Babayev 175 Tihacek Sojic 76, 82 Todorov G 67 Todorov G. 31 Todorovic Aleksandar 81 Todorovic Ana 81

V

Vaggeli Konstantina 79 Valbona Disha 99 Vankovski Vlado 116 Vascu Bogdan 99 Vasiljevic D. 71 Vasiljevic Darko 37 Vasiljevic Darko 31 Vasilliadis L. 128 Vassileva Radosveta 101 Vataman M 110 Vataman Maria 106

187

Poster Presentaions

Proceedings of BaSS 2009

Veleganova V. 165 Veljko Kolak 70 Velkov Bratislav 88 Venhar Susal 141 Vergjini Mulo 132, 152 Vinereanu A 58 Virgjine Mulo 157 Virgjini Mulo 153 Vitalariu Anca 87 Vjosa Hamiti 169 Vladimirova-Kitova L. 142 Vladimirov Bojan 133 Vladimirov Stoyan 73, 115 Vlahova A. 82 Vojvodic Katarina 91, 97, 118 Volkan Arikan 169 Volkan Sahin 36, 86, 170 Voroneanu Maria 132 Vujanovic Dijana 156 Vujaskovic M. 102, 108 Vukic Z. 94 Vukoje Karolina 102, 112 Vukovic A. 147 Vukovic Andjela 166 Vuksa Ana 117 Vulicevcic Tijana 27, 152 Vulicevic Tijana 149 Vulicevic Zoran 61 Vulovic M. 22

Zeynep Yegin 34 Zheleva Anastasia 133 Zivkovic R. 76, 79, 82 Zivkovic Slavoljub 53 Zivorad Nikolic 44 Zlata Brkic 124 Zouloumis L. 38, 51, 93, 172, 174 Zouloumis S. 38 Zourou I. 135 Zuhal Duzgun 104 Zukanovi Amila 15 Zuzelova M. 49 Zuzelova Marija 116

X

Xhina Mulo 28

Y

Yagmur Sener 33, 34 Yahya Orcun Zorba 105 Yahya Zorba 103, 104 Yalcin M 54, 59 Yalcin Muhammet 60, 61 Yamanel Kivanc 60, 69 Yasar Goyenc 151 Yasemin Keskin 86 Yavuz Yuksel 98 Yazicioglu Hseyin 78 Yesilyurt Cemal 60 Yildirim E 147 Yildirim Murat 67 Yildirim Tahsin 73, 167 Yilmaz F 147, 149, 154 Yilmaz F. 110, 111 Ylli Menga 141, 142, 143 Yoncheva Elena 39 Yordanova M. 75, 146 Yordanova S. 75, 146 Yuzugullu Bulem 62

Z

Zabokova-Bilbilova E. 111 Zafer Kucukodaci 112 Zafer Sari 26, 27 Zaprianov Zaprian 133 Zarkovic Bojana 102, 112 Zdravkovic Vukica 21 Zegan Georgeta 154, 158 Zehra Ileri 27, 151 Zetu Irina 148 Zeynep Eroglu 122 Zeynep Ozkurt 25, 87, 109

188

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14th Congress of Balkan Stomatological Society (BaSS)

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