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Öğe Can Dentin Surfaces Be Bonded Safely With Ozone and Boric Acid?(Taylor & Francis Inc, 2015) Ercan, Ertuğrul; Çolak, Hakan; Hamidi, Mehmet Mustafa; İbrahimov, Damla; Gülal, EsraThe aim of this study is to evaluate the effect of different cavity disinfectants on shear bond strength. In this study, 60 caries-free human molar teeth were used. Smooth dentin surfaces were revealed by cutting occlusal enamel and a standard smear layer was obtained by using 600-grid sandpaper. Specimens were randomly assigned to four groups according to the disinfectant used: Group 1: Control (no disinfectant); Group 2: Ozone; Group 3: Chlorhexidine, Group 4: Boric acid. Specimens were bonded using S3 Plus Bond and the composite buildups were created by using composite resin according to the manufacturer's instructions. After specimens were kept for 24 h, at 37 degrees C in distilled water, the shear bond strength test was measured with a universal test machine. The highest bond strength values were observed in the control group. The bond strength was significantly lower in the chlorhexidine, and boric acid-treated groups than it was in the control group (respectively, p = 0.046 and p = 0.028); however, no significant difference in the bond strength was observed between the ozone group and the control group (p = 0.444). The ozone group was detected as having the best shear bond strength values in groups which were applied to cavity disinfectants.Öğe Evaluation of Novel Microabrasion Paste as a Dental Bleaching Material and Effects on Enamel Surface(Wiley, 2015) Baglar, Serdar; Colak, Hakan; Hamidi, Mehmet MustafaPurpose: Dental fluorosis is an enamel dysplasia that can cause serious aesthetic and psychological problems. An examination of the literature shows that the microabrasion method is the most effective way to treat fluorosis. This study aimed to produce a prototype microabrasion paste for the treatment of fluorosis stains and to examine the effects of the paste on tooth structure and color in vitro. Material and Methods: Forty extracted upper incisor teeth were used in this study. The teeth were divided into four treatment groups: a prototype microabrasion paste group (N = 10), an Opalustre paste group (N = 10), a 37% phosphoric acid gel group (N = 10), and a distilled water (control) group (N = 10). Following treatment, all specimens in each of the four groups were examined by scanning electron microscopy for changes in their surface enamel. Changes in tooth color changes of the 1st and 2nd groups were measured before and after treatment by a VITA Easyshade Advance spectrophotometer. Results: In scanning electron microscopy evaluations, significant differences were not observed between the 1st and 2nd groups. Differences in three color-measuring coordinates between the 1st and 2nd were also not statistically significant (p > 0.05). Conclusions: The study demonstrated that the prototype paste is a viable treatment option for dental fluorosis. CLINICAL SIGNIFICANCE The findings in this study demonstrated that the tested prototype microabrasion paste is extremely harmless, minimally invasive agent, and able to improve the color, shine and chrome values of the teeth.Öğe Evaluation of the clinical success of class I cavities prepared by an Er:YAG laser-5-year follow-up study(Springer London Ltd, 2015) Hamidi, Mehmet Mustafa; Ercan, Ertugrul; Dulgergil, Coruh Turksel; Colak, HakanThe purpose of this study was to evaluate, after 5 years, the clinical success of preparing class 1 composite resin restorations with an Er:YAG laser. Sixty-five teeth of 30 patients were included in the study, and an Er:YAG laser emitting at a wavelength of 2.94 mu m was used for the class I cavity preparations with not more than one third of the mesiodistal width of the occlusal surfaces of each tooth. All cavities were restored with a light-cured composite resin, following a single bond application. After the baseline examination, restorations were reevaluated by the same experienced clinician after 5 years, using the modified Ryge criteria. At the end of 5 years, 41 of the 65 restorations were evaluated in 22 patients and scored. With respect to marginal discoloration, anatomic form, color match, and surface texture, significant differences were found between baselines tested after 5 years. Clinical evaluation of postoperative sensitivity showed that 90.2 % were rated as alpha. All restorations evaluated in this study demonstrated acceptable clinical performance within the evaluation period based on the alpha and bravo ratings for clinically satisfactory restorations. Further evaluations are necessary for a better clinical performance analysis.Öğe Mental retarde bireylerde ağız diş sağlığı durum değerlendirmesi(Kırıkkale Üniversitesi, 2014) Hamidi, Mehmet Mustafa; Şengün, AbdulkadirMental retarde bireylerin ağız diş sağlığına ilişkin farklı ülkelerde yapılan çalışmalarda, toplum geneline oranla daha kötü ağız hijyenine ve daha yüksek çürük skorlarına sahip olduğu bildirilmiştir. Ülkemizde yapılmış çalışmalarda ise farklı sonuçların varlığı gözlenmektedir. Ülkemizdeki mental retarde bireylerin ağız diş sağlığı durumunun daha net ortaya konulabilmesi amacıyla, Kırıkkale il merkezindeki mental retarde bireylerin ağız diş sağlığı durumlarının belirlenmesi ve mental retarde olmayan sağlıklı bireylerle karşılaştırılmasının planlandığı bir vaka-kontrol çalışması gerçekleştirildi. Çalışma grubunu 289 mental retarde birey, kontrol grubunu 100 sağlıklı birey oluşturdu. Yaş aralığı 12-55 olarak belirlendi. Bireylerin muayenesi tek bir araştırıcı tarafından ağız aynası ve WHO sondu kullanılarak gerçekleştirildi. Çalışma grubunda en fazla hafif mental retardasyon (%59,17) gözlenirken, en az ileri mental retardasyon (%3,81) gözlendi. Çalışma grubunda kontrol grubuna kıyasla daha yüksek çürük diş, kayıp diş ve DMFT değerleri gözlenmesine rağmen anlamlı farklılık bulunmadı. Dolgulu diş sayısının kontrol grubunda anlamlı derecede yüksek olduğu, tedavi gereksiniminin ise çalışma grubunda daha yüksek olduğu gözlendi. Periodontal olarak sağlıklı sekstanta sahip birey yüzdesinin kontrol grubunda anlamlı derecede yüksek olduğu gözlendi. İyi oral hijyene sahip birey yüzdesi kontrol grubunda anlamlı derecede yüksek olarak bulundu. Çalışma grubunda fırçalama alışkanlığı (%68,5) kontrol grubuna göre (%91) anlamlı derecede düşük bulundu. Protez mevcudiyeti kontrol grubunda anlamlı derecede yüksek iken, protez gereksinimi çalışma grubunda anlamlı derecede yüksek olarak gözlendi. Sonuç olarak mental retarde bireylerin ağız diş sağlığının genel toplum ortalamasından daha kötü durumda olduğu belirlendi. Anahtar Sözcükler: Ağız diş sağlığı, DMFT, Mental retardasyon, Oral hijyen, Periodontal durumÖğe One-year clinical evaluation of different types of bulk-fill composites(Wiley, 2017) Bayraktar, Yusuf; Ercan, Ertugrul; Hamidi, Mehmet Mustafa; Colak, HakanAim: In the present study, we evaluated the 1-year clinical performance of a conventional posterior composite resin and three bulk-fill composite resins. Methods: Fifty patients with four class II restorations under occlusion were enrolled in the present study. A total of 200 restorations were placed in the cavity, 50 for each material (Clearfil Photo Posterior, Filtek Bulk-Fill Flowable and Filtek P60, Tetric EvoCeram Bulk-Fill, and SonicFill). One operator placed the restorations in the cavity, and 1 week later the patients were called for baseline examination. Two calibrated examiners evaluated the restorations once every 3 months for 1 year, according to United States Public Health Service criteria. The data were analyzed using SPSS. Non-parametric tests (Kruskal-Wallis, Mann-Whitney U-test, and Friedman) were used for the analysis at a confidence level of 95%. Results: The 1-year recall rate was 86%. All restorations showed minor modifications after 1 year. However, no statistically-significant differences were detected between the materials' performance at baseline and after 1 year for all criteria (P > 0.05). Conclusions: The bulk-fill composite resin materials showed similar clinical performance when compared with a conventional posterior composite resin. Further evaluations are necessary for the long-term clinical performance of these materials.Öğe Prevalence of burning mouth syndrome in adult Turkish population(2011) Çolak, Hakan; Bayraktar, Yusuf; Hamidi, Mehmet Mustafa; Uzgur, Recep; Toptancı, İsmet Rezani; Dallı, MehmetAğız yanması sendromu (AYS) kronik bir orofasiyal ağrı olarak tanımlanır ve semptomatik olarak dilde ve dudakta veya bütün ağız boşluğu içinde yangı tarzında bir ağrıyla karakterizedir. Uluslararası çalışmalarda Ağız yanması sendromunun prevalansının %0,6 ile %15 arasında değiştiği rapor edilmektedir. Bu çalışmada Türk toplumunda AYS prevalansının belirlenmesi amaçlanmıştır. Gereç ve yöntem: Demografik özellikler, tıbbi öykü ve hastalar tarafından alınan ilaçlar ile birlikte klinik verileri de içeren bir anket formu oluşturuldu. Bu kesitsel çalışma Kırıkkale Üniversitesi Diş Hekimliği Fakültesi Restoratif Diş Hekimliği bölümüne başvuran katılımcılar arasından rastgele seçilen 1000 hasta (500 kadın ve 500 erkek) üzerinde gerçekleştirilmiştir. Sonuçlar: 12 hastada ağız yanması sendromu tespit edilmiştir prevelansı %0,12 olarak bulunmuştur. Bu hastaların 2’ si erkek ve 10’u kadındır. Erkek kadın oranı 1:5 olarak bulunmuştur. Ağız yanması sendromu en çok dilde görülmüştür. Parafonksyonel alışkanlıklar en yaygın faktor olarak gözlemlenmiştir. Görsel analog skala (VAS) sonuçlarına göre ortalama (SD) yangı şiddeti seviyesi 5,45(1,69) olarak bulunmuştur. Sonuç: Ağız yanması sendromunun Türk toplumunda prevalansı düşük olup kadınlarda daha sık rastlanmaktadır.Öğe Prevalence of three-rooted mandibular permanent first molars among the Turkish population(Wolters Kluwer Medknow Publications, 2012) Çolak, Hakan; Özcan, E.; Hamidi, Mehmet MustafaBackground: This retrospective study was undertaken to determine the prevalence of three-rooted permanent mandibular first molars in digital periapical radiographic images obtained from a Turkish patient. Materials and Methods : Periapical radiographs of 640 subjects, which had been obtained in the Department of Oral Diagnosis Radiology, Kirikkale University Dental Faculty, Kirikkale, Turkey from June 2010 to March 2011, were screened and examined retrospectively. All radiographs were evaluated under optimal conditions using double magnifying glasses. Each radiograph was separately evaluated by two authors (H.C. and M.M.H.). Comparison of the incidence and the correlations between males and females and left- and right-side occurrences were analyzed by using the Pearson chi-square test with SPSS (15.0; SPSS Inc., Chicago, IL, USA). Results : The periapical radiographs of 9 patients, 4 females and 5 males, had three-rooted mandibular first molars. Of these three-rooted mandibular first molars, 7 were found on the right side and 5 on the left side. The overall incidence of patients with three-rooted mandibular first molars was 1.41. The incidence was 1.63 for men and 1.2 for women. Conclusion : The prevalence of three-rooted mandibular first molars from all teeth examined was 1 (12 of 1205), 1.17 (7 of 596) for the right side, and 0.82 (5 of 528) for the left side occurrences.Öğe Radiographic Study of the Prevalence of Dens Invaginatus in a Sample Set of Turkish Dental Patients(Medknow Publications & Media Pvt Ltd, 2012) Colak, Hakan; Tan, Enes; Aylikci, Bahadir Ugur; Uzgur, Recep; Turkal, Mustafa; Hamidi, Mehmet MustafaAim: The aim of this study was to determine the prevalence of dens invaginatus in a sample of Turkish dental patients. Materials and Methods: The sample included 6, 912 panoramic radiographs from different Turkish dental patients. The ages of the patients ranged from 18 to 50 years. A tooth was considered having dens invaginatus if an infolding of a radiopaque ribbon-like structure equal in density to enamel was seen extending from the cingulum into the root canal. Maxillary and mandibular teeth were evaluated on panoramic radiographs to determine the type of dens invaginatus using Oehlers classification. Results: The overall incidence of patients with dens invaginatus was 0.17%. Dens invaginatus were detected in 15 teeth of a total of 192 150 teeth to give a tooth prevalence of 0.008%. Maxillary lateral incisors were most commonly affected teeth in the mouth (80% of cases), followed by maxillary canine teeth (20% of cases). The bilateral incidence of a symmetrical distribution was 25%. Conclusion: The occurrence of dens invaginatus among this Turkish population was rare. Attention should be paid to the presence of dens invaginatus and the treatment problems associated with it.Öğe Root and canal morphology of maxillary first premolars in a Turkish population(Elsevier Taiwan, 2012) Ozcan, Erdal; Colak, Hakan; Hamidi, Mehmet MustafaBackground/purpose: The purpose of this study was to evaluate root and canal morphology in maxillary first premolars in a Turkish population. Materials and methods: We collected 653 maxillary premolars from patients who came for extractions needed for several reasons, such as caries or prosthodontic or orthodontic treatment. The extracted teeth were thoroughly washed and cleaned to remove blood, saliva, or debris. The cleaned samples were then stored in normal saline till further experiment was carried out. A sample of maxillary first premolars was subjected to visual examination and digital radiography to determine the number of roots and root canals and their types. Results: Of the 653 teeth, 295 (45.2%) had one, 351 (53.7%) had two, and three molars (1.1%) had three roots. Of these, 7.8% (51 teeth) had single canal (Type I canal), 90.7% (592 teeth) had two canals (Types II and III), and 1.5% (10 teeth) had three canals (Type IV). Conclusion: Turkish maxillary first premolars are mainly two rooted and predominantly have Type III canal morphology. Copyright (C) 2012, Association for Dental Sciences of the Republic of China. Published by Elsevier Taiwan LLC. All rights reserved.
