Çakmak, Fethiye | Koçak, Sibel | Koçak, Mustafa Murat | Elekdağ-Türk, Selma | Türk, Tamer

Makale | 2015 | TURKISH JOURNAL OF ORTHODONTICS28 ( 2 ) , pp.48 - 54

Objective: To evaluate initial shear bond strengths (SBSs) of ceramic brackets using either a self-etching primer (SEP) or the conventional method (CM) after intracoronal bleaching with sodium perborate and distilled water. Materials and Method: Eighty human incisors were divided into 4 groups according to bleaching and bonding procedures: group 1, bleaching was not applied and brackets were bonded with SEP; group 2, bleaching was not applied and brackets were bonded with the CM; group 3, intracoronal bleaching with sodium perborate was applied for 3 weeks and brackets were bonded with SEP; group 4, intracoronal bleaching with sodiu . . .m perborate was applied for 3 weeks and brackets were bonded with the CM. The SEP (Transbond Plus) was applied as recommended by the manufacturer. After SEP application, ceramic brackets were bonded with light cure adhesive (Transbond XT). For the CM, the teeth were etched with 37% phosphoric acid. After etching, a thin uniform coat of primer (Transbond XT Primer) was applied and ceramic brackets were bonded with light cure adhesive (Transbond XT). The SBSs were measured after water storage for 30 days, after 1000 cycles of thermocycling between 5 degrees C and 55 degrees C. Bond failure location was determined with the adhesive remnant index (ARI). Results: For the SEP method, there was no significant difference between the SBS values of the bleaching and nonbleaching groups. Furthermore, for the CM, the SBS value of the nonbleaching group was not significantly different from that of the bleaching group. The SBS values of the SEP method presented significant differences from the SBS values of the CM (p < 0.001). The SBS values of the SEP application decreased with and without bleaching. ARI scores did not show any significant difference between the groups (p = 0.174). Conclusion: Intracoronal bleaching with sodium perborate and distilled water did not affect the SBS values of ceramic brackets Daha fazlası Daha az

Özlü, Fethiye Çakmak | Koçak, Sibel | Koçak, Mustafa Murat | Elekdağ-Türk, Selma | Türk, Tamer

Makale | 2015 | TURKISH JOURNAL OF ORTHODONTICS28 ( 3 ) , pp.77 - 81

Objective: To evaluate the initial shear bond strengths (SBSs) of ceramic brackets using either a self-etching primer (SEP) or the conventional method (CM) after intracoronal bleaching with sodium perborate and distilled water. Methods: Eighty human incisors were divided into four groups according to bleaching and bonding procedures: Group 1, bleaching was not applied and the brackets were bonded with a self-etching primer; Group 2, bleaching was not applied and the brackets were bonded with the conventional method; Group 3, intracoronal bleaching with sodium perborate was applied for three weeks and the brackets were bonded with a . . .self-etching primer; and Group 4, intracoronal bleaching with sodium perborate was applied for three weeks and the brackets were bonded with the conventional method. A self-etching primer (Transbond Plus) was applied as recommended by the manufacturer. After SEP application, the ceramic brackets were bonded with a light-curing adhesive (Transbond XT). For the conventional method, the teeth were etched with 37% phosphoric acid. After etching, a thin uniform coat of primer (Transbond XT Primer) was applied and the ceramic brackets were bonded with a light-curing adhesive (Transbond XT). SBSs were measured after water storage for 30 days, after 1000 cycles of thermocycling between 5 degrees C and 55 degrees C. Bond failure location was determined with the Adhesive Remnant Index (ARI). Results: For the SEP method, there was no significant difference between SBS values of the bleaching and non-bleaching groups. Furthermore, for the conventional method, the SBS value of the non-bleaching group was not significantly different from that of the bleaching group. SBS values of the SEP method presented significant differences from those of the conventional method ( Daha fazlası Daha az

Sağlam, Baran Can | Çiçek, Ersan | Koçak, Sibel | Koçak, Mustafa Murat

Makale | 2015 | Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi25 ( 2 ) , pp.181 - 184

Amaç: Bu çalışmanın amacı Root ZX mini ve Raypex 6 elektronik apex bulucu cihazların (EAB) düşük ve tam dolu pil/şarj durumlarının kanal boyu ölçümündeki etkinliklerinin karşılaştırılmasıdır. Gereç ve Yöntem: Bu çalışmada kök ucu gelişimi tamamlanmış 27 adet daimi alt çene keser diş kullanıldı. Giriş kaviteleri hazırlandı ve tüm örnekler numaralandırıldı. 10 numara K tipi eğe kök kanalı içerisine ucu apikal foramende görülünceye dek yerleştirildi ve gerçek kök kanal boyu belirlendi. Pil ile çalışan Root ZX mini ve şarj edilebilir özellikte olan Raypex 6 EAB cihazları üretici firma talimatlarına göre kullanıldı. Elektronik çalışma bo . . .yutu tespiti ilk olarak tam dolu ardından da düşük pil/şarj seviyesine sahip Root ZX mini ve Raypex 6 cihazları ile yapıldı. Gruplar arasındaki farklılıkların kıyaslanması Kruskal-Wallis istatistiksel analizi ile yapıldı. Bulgular: Raypex 6 ile yapılan ölçümlerde tam dolu ve düşük şarj seviyeleri arasında istatistiksel olarak anlamlı bir fark bulunmamıştır. Root ZX ve Raypex 6'nın tam dolu pil/şarj seviyeleri arasında anlamlı bir fark bulunmamıştır. Düşük pil seviyesindeki Root ZX mini ile diğer deney grupları arasında ise istatistiksel olarak anlamlı bir fark ortaya çıkmıştır(p< 0.05). Sonuç: Root ZX mini düşük pil seviyesinde farklı ölçümlere yol açmıştır ancak pil ile çalışan ve şarjlı elektronik apeks bulucu cihazları ile elektronik kanal boyu ölçümünde hem düşük hem de tam dolu pil/şarj seviyelerinde ±1 mm tolerans aralığı için kabul edilebilir ölçümler elde edilmiştir Aim: The aim of this in vitro study was to compare the accuracy of Root ZX mini and Raypex 6 electronic apex locators (EAL) in low versus full battery/charge conditions. Material and methods: Twenty-seven extracted human mandibular incisor teeth with mature apices were used in this study. Access cavities were prepared and all specimens were numbered. #10 K file was introduced into the root canal until its tip was visualized at the apical foramen and the actual working length (AWL) was determined..The EALs; battery-powered Root ZX mini (J. Morita Corp, Tokyo, Japan) and rechargeble Raypex 6 (VDW, Munich, Germany) manufacturers’ instructions. The electronic working length (EWL) measurement differences with Root ZX mini and Raypex 6 in low and full battery/chargeconditions were compared among the groups. Statistical analyses were performed by the Kruskal–Wallis test.Results: No significant difference was observed between low and full charge condition of Raypex 6 groups. Although there was no significant difference between Root ZX with full battery and Raypex 6 with full charge conditions, contrary root ZX mini with low battery showed significant differences in comparison with the other groups (p< 0.05).Conclusion: Although the low battery condition of the EAL may cause deviations in measurements, the accuracy of the both battery powered and charged EALs presents acceptable results in low and full battery/charge conditions within the ±1 mm tolerance range. Nevertheless the low battery condition of the EAL may cause deviations in measurement Daha fazlası Daha az

Özkalaycı, Nurhat | Çiçek, Orhan

Makale | 2017 | BioMed Research International2017 , pp.181 - 184

Objective. The aim of this study is to evaluate the factors that affect wearing time and patient behavior during reverse pull headgear therapy with a newly designed reverse pull headgear. Methods. In clinical practice, new reverse pull headgears were applied to fifteen patients. The patients were monitored during reverse pull headgear therapy and the data were evaluated. Statistical analysis was made. Results. During the study, patients were monitored successfully and the evaluations showed that patients wear the new reverse pull headgears mostly at night. There are differences between days of week and hours of day. Weekends are mor . . .e popular than weekdays for wearing reverse pull headgear. Conclusions. This new type of reverse pull headgears can be used successfully in clinical practice and can help the clinician. Study showed that the most important factor that affects the cooperation of reverse pull headgear patient is aesthetic appearance. © 2017 Nurhat Ozkalayci and Orhan Cicek Daha fazlası Daha az

Özkalaycı, Nurhat | Yetmez, Mehmet

Makale | 2018 | BioMed Research International2018 , pp.181 - 184

Objective. The aim of this study is to present a new adjustable Cise space maintainer for preventive orthodontic applications. Methods. Stainless steel based new design consists of six main components. In order to understand the major displacement and stress fields, structural analysis for the design is considered by using finite element method. Results. Similar to major displacement at y-axis, critical stresses ?x and ?xy possess a linear distribution with constant increasing. Additionally, strain energy density (SED) plays an important role to determine critical biting load capacity. Conclusion. Structural analysis shows that the . . .space maintainer is stable and is used for maintaining and/or regaining the space which arouses early loss of molar tooth. © 2018 Nurhat Ozkalayci and Mehmet Yetmez Daha fazlası Daha az

Koçak, Mustafa Murat | Koçak, Sibel | Oktay, Elif Aybala | Aktuna, Serkan | Yaman, Sis Darendeliler

Diğer | 2010 | Gülhane Tıp Dergisi52 ( 2 ) , pp.96 - 99

Bu çalışmanın amacı farklı kalınlıklarda yerleştirilen beyaz mineral trioksit agregat, mineral trioksit agregat, gri mineral trioksit agregat ve ışıkla sertleşen cam iyonomer simanın devital ağartma işlemlerinde bariyer maddesi olarak kullanımlarının etkinliğinin değerlendirilmesidir. Çalışmada 130 adet yeni çekilmiş, çürüksüz, daimi tek köklü insan üst çene kanin dişi kullanıldı. Dişler rastgele altı gruba ve pozitif ile negatif kontrol gruplarına ayrıldı. Deney grupları 1, 2 ve 3'deki örneklere sırasıyla 2 mm kalınlıkta beyaz mineral trioksit agregat, gri mineral trioksit agregat ve ışıkla sertleşen cam iyonomer siman yerleştirild . . .i. Deney grupları 4, 5 ve 6'daki örneklere sırasıyla 5 mm kalınlıkta beyaz mineral trioksit agregat, gri mineral trioksit agregat ve ışıkla sertleşen cam iyonomer siman yerleştirildi. Pozitif kontrol grubundaki örneklere bariyer yerleştirilmedi ve negatif kontrol grubundaki örneklere ağartma işlemi uygulanmadı. Beyaz ve gri mineral trioksit agregatlar arasında sızıntı miktarı açısından farklılık bulunmadı (p>0.001). Sonuç olarak hem gri hem de beyaz mineral trioksit agregat iyi koronal kaplama sağlayıp, koronal sızıntı miktarını azaltmıştır. The aim of this study was to compare the effectiveness of white mineral trioxide aggregate and gray mineral trioxide aggregate with different thicknesses and light curing glass ionomer cement when used as a barrier material in intracoronal bleaching procedures. In this study, 130 freshly extracted, caries free human permanent single rooted maxillary canine teeth were used. The teeth were randomly divided into six experimental groups, and positive and negative control groups. The specimens in the experimental groups 1, 2 and 3 received white mineral trioxide aggregate, gray mineral trioxide aggregate and light curing glass ionomer cement with a thickness of 2 mm, respectively. The specimens in the experimental groups 4, 5 and 6 received white mineral trioxide aggregate, gray mineral trioxide aggregate and light curing glass ionomer cement with a thickness of 5 mm, respectively. The positive control group received no barrier material and the negative control group did not undergo bleaching. There was no difference in leakage between gray mineral trioxide aggregate and white mineral trioxide aggregate (p>0.001). In conclusion, both gray and white mineral trioxide aggregate provided good coronal seal and decreased the amount of coronal leakage Daha fazlası Daha az

Koçak, Sibel | Köktürk, Firuzan | Sağlam, Can | Koçak, Mustafa Murat

Makale | 2013 | Cumhuriyet Dental Journal16 ( 4 ) , pp.261 - 266

Objectives: The aim of the present study was to evaluate the quality of root canal treatments and coronal restorations investigating their influence on the periapical status of endodontically-treated teeth in a Turkish population based on radiographic examination. Materials and Methods: The study included 583 patients referred for routine dental care. A total of 1125 endodontically treated teeth were examined with panoramic radiographs. The quality of root canal fillings and coronal restorations were evaluated according to the criteria determined by Gündüz et al., which were slightly modified from those described by De Moor et al. A . . .pical status was assessed by the Periapical Index (PAI) scores. Results: Out of 1125 endodontically treated teeth, 539 were classified as healthy and 586 as displaying apical periodontitis. Of these 539 subjects, 389 teeth had received quality endodontic treatment. Of 586 teeth with apical periodontitis, 500 had poor endodontic treatment. Four hundred and seventy-five teeth had adequate root canal fillings. Of these teeth, 389 were classified as healthy. Of the 666 teeth with adequate restoration, apical region was classified as healthy for 410 subjects. For the 388 teeth with both adequate coronal restorations and root canal fillings, the success rate was 85.3%. For the 372 teeth with both inadequate coronal restorations and root canal fillings, the success rate was 18.8%. Conclusions: The quality of root fillings in the population living in the back country of Turkey is in general below the acceptable standard and requires substantial improvement. Objectives: The aim of the present study was to evaluate the quality of root canal treatments and coronal restorations investigating their influence on the periapical status of endodontically-treated teeth in a Turkish population based on radiographic examination. Materials and Methods: The study included 583 patients referred for routine dental care. A total of 1125 endodontically treated teeth were examined with panoramic radiographs. The quality of root canal fillings and coronal restorations were evaluated according to the criteria determined by Gündüz et al., which were slightly modified from those described by De Moor et al. Apical status was assessed by the Periapical Index (PAI) scores. Results: Out of 1125 endodontically treated teeth, 539 were classified as healthy and 586 as displaying apical periodontitis. Of these 539 subjects, 389 teeth had received quality endodontic treatment. Of 586 teeth with apical periodontitis, 500 had poor endodontic treatment. Four hundred and seventy-five teeth had adequate root canal fillings. Of these teeth, 389 were classified as healthy. Of the 666 teeth with adequate restoration, apical region was classified as healthy for 410 subjects. For the 388 teeth with both adequate coronal restorations and root canal fillings, the success rate was 85.3%. For the 372 teeth with both inadequate coronal restorations and root canal fillings, the success rate was 18.8%. Conclusions: The quality of root fillings in the population living in the back country of Turkey is in general below the acceptable standard and requires substantial improvement Daha fazlası Daha az

Özkalaycı, Nurhat | Aydın, Hamit

Makale | 2017 | Clinical Dentistry and Research41 ( 1 ) , pp.27 - 35

Özkalaycı, Nurhat | Özer, Mete | Sümer, Mahmut

Makale | 2011 | Korean Journal of Orthodontics41 ( 1 ) , pp.59 - 69

The aim of this report is to present the treatment of a 14-year-old boy with scissors-bite. Mandibular sym-physeal distraction osteogenesis (MSDO) with tooth-supported distractor was performed to expand the mandible, and intermaxillary cross elastics were used. The mandible was expanded approximately 9 mm. Asymmetric widening was done by using cross elastics and MSDO simultaneously. The buccal crossbite was corrected successfully. After a 2-year observation period, widening of the mandible using this procedure was judged to be stable.

Özkalaycı, Nurhat | Yetmez, Mehmet

Makale | 2017 | 7tepe Klinik13 ( 1 ) , pp.13 - 16

Amaç: Çalışmanın amacı ortodontik yüz maskesi kullanım süresi ve düzenini takip etmek amacıyla yüz maskesinin alın kısmına takılan yeni bir izleme sisteminin sunulması ve değerlendirilmesidir.Gereç ve Yöntem: Yeni izleme sistemi ana gövde, yuva kapağı ve sensör olmak üzere 3 ana parçadan oluşmaktadır. Ana gövde iki adet yan sabitleyici, bir adet orta sabitleyici, sensör takma yuvası ve sekiz vida deliğinden oluşmaktadır. Ana gövdedeki tüm parçaların yerleştirilmesini takiben sensör programlanmış ve yuvaya yerleştirilmiştir daha sonra kapak sabitlenmiştir. Sistem laboratuvar koşullarında test edilmiştir.Bulgular: Çalışma sonunda elde . . . edilen verinin detaylı analizi göstermiştir ki izleme sistemi takma ve sökme süreçlerini doğru bir şekilde takip etmektedir. Yeni tipteki ortodontik yüz maskesi takma sürelerini ve düzenini izleyebilmektedir. Sonuç: Yüz maskesi tedavisi sagital yöndeki üst çene yetersizliğinin düzeltilmesinde elzemdir. Toplam kullanım süresi ve düzenli kullanım ortodontik ve ortopedik tedavinin başarısını etkileyen temel faktörlerdir. Objektif ve bilimsel olarak bu sürecin izlenmesi bu meşakkatli, uzun ve pahalı tedavide klinisyenlere büyük katkı sağlayacaktır. Bu çalışmanın sonucu göstermiştir ki yeni izleme sistemi yüz maskesi kullanımı için uygundur. Introduction: The aim of this study is to present and evaluate a new monitoring system attached to forehead part of face mask for tracking orthodontic face mask usage time and regularity. Methods: The new monitoring system consists of three main parts as main body, slot cover and sensor. The main body includes two lateral fixer, a median fixer, sensor insertion slot and eight screw holes. After completing the assembly procedure for the main part, the sensor is programmed and inserted to its slot and then the cover is screwed. The system was tested under laboratory condition.Results: Detailed analysis of the post study data showed that the system measured the attachment and detachment period correctly. The new type orthodontic face mask can monitor the wearing time and regularity.Conclusion: Face mask therapy is a crucial for correction of sagittal maxillary deficiency. Total wearing time and regularity is main factors to reach to a success level of this orthodontic and orthopedic treatment. Objective and scientific monitoring system proposed here may help the clinicians for difficult, long and expensive treatment. Conclusion of present study show that the system proposed is suitable for the further face mask usage Daha fazlası Daha az

Koçak, Sibel | Erten, Hülya

Makale | 2012 | Gazi Üniversitesi Diş Hekimliği Fakültesi Dergisi (.Acta Odontologica Turcica)29 ( 1 ) , pp.63 - 71

Mineral trioksit agregat (MTA), kök ucu dolgusu, pulpa kaplaması, perforasyon tamiri ve diğer endodontik yaklaşımlarda yaygın olarak kullanılmaktadır. MTA'nın biyouyumluluğu çok çeşitli yollarla; hücre baskılanması ve büyümesi, in vivo olarak cilt altı ve kemik içi implantasyon ve dental dokularla direkt temas yöntemleriyle araştırılmıştır. Bu derlemenin amacı, MTA'nın biyouyumluluğu hakkındaki genel bilgileri güncellemektir. Mineral trioxide aggregate (MTA) is widely used for root-end fillings, pulp capping, perforation repairs, and other endodontic procedures. The biocompatibility of MTA has been investigated in a number of ways, . . .using cell expression and growth, subcutaneous and intra-osseous implantation and direct contact with dental tissues in vivo. The aim of this review is to update the general knowledge about the MTA biocompatibility Daha fazlası Daha az

Türk, Tamer | Elekdağ-Türk, Selma | Koçak, Mustafa Murat | Koçak, Sibel | Özlü, Fethiye Çakmak

Makale | 2015 | Turkish Journal of Orthodontics28 ( 3 ) , pp.77 - 81

Objective: To evaluate the initial shear bond strengths (SBSs) of ceramic brackets using either a self-etching primer (SEP) or the conventional method (CM) after intracoronal bleaching with sodium perborate and distilled water. Methods: Eighty human incisors were divided into four groups according to bleaching and bonding procedures: Group 1, bleaching was not applied and the brackets were bonded with a self-etching primer; Group 2, bleaching was not applied and the brackets were bonded with the conventional method; Group 3, intracoronal bleaching with sodium perborate was applied for three weeks and the brackets were bonded with a . . .self-etching primer; and Group 4, intracoronal bleaching with sodium perborate was applied for three weeks and the brackets were bonded with the conventional method. A self-etching primer (Transbond Plus) was applied as recommended by the manufacturer. After SEP application, the ceramic brackets were bonded with a light-curing adhesive (Transbond XT). For the conventional method, the teeth were etched with 37% phosphoric acid. After etching, a thin uniform coat of primer (Transbond XT Primer) was applied and the ceramic brackets were bonded with a light-curing adhesive (Transbond XT). SBSs were measured after water storage for 30 days, after 1000 cycles of thermocycling between 5°C and 55°C. Bond failure location was determined with the Adhesive Remnant Index (ARI).Results: For the SEP method, there was no significant difference between SBS values of the bleaching and non-bleaching groups. Furthermore, for the conventional method, the SBS value of the non-bleaching group was not significantly different from that of the bleaching group. SBS values of the SEP method presented significant differences from those of the conventional method ( Daha fazlası Daha az