Farklı cerrahi uçlar ve farklı güç ayarlarında hazırlanan ultrasonik kök-ucu kavite preparasyonunun kök-ucu dolgu maddesinin marjinal adaptasyonuna etkisinin araştırılması

Amaç: Bu in-vitro çalışmanın amacı ultrasonik ünitin farklı güç ayarlarının ve farklı tipteki ultrasonik cerrahi uçların kök ucu dolgu maddesinin marjinal adaptasyonu üzerine olan etkisini değerlendirmektir. Gereç ve Yöntem: Bu çalışmada 54 adet çekilmiş, tek köklü insan dişi kullanıldı. Dişlerin kronları mine-sement sınırından kesildikten sonra kök kanalları ProTaper döner eğe sistemi kullanılarak crown-down tekniği ile F3 numaralı eğeye kadar genişletilip, ProTaper F3 gutta-perka ve pat kullanılarak tek kon yöntemi ile dolduruldu. Köklerin apeksleri 3 mm kesildi ve kökler 15er diş içeren altı deneysel gruba ayrıldı. 10 adet kök negatif ve pozitif kontrol gruplarında kullanıldı. Kök ucu kaviteleri ultrasonik ünit kullanılarak elmas kaplı, paslanmaz çelik ve zirkonyum nitrit kaplı cerrahi uçlar ile orta güç ve yüksek güç ayarlarında hazırlandı. Kaviteler hazırlanırken her güç ayarı ve her uç kullanılırken geçen süre kaydedildi. Hazırlanan kök ucu kaviteleri SuperEBA dolgu maddesi ile dolduruldu. Kök ucu dolgusunun marjinal adaptasyonu SEM ile incelendi. Elde edilen veriler Kruskal-Wallis testi ile değerlendirildi. Bulgular: Marjinal adaptasyon açısından gruplar arasında istatistiksel açıdan fark bulunmadı (P>0,01). Sonuç: Bu çalışmanın sonucunda kök ucu kavitesi hazırlanırken kullanılan ultrasonik cerrahi ucun ve güç ayarının kök ucu dolgu maddesinin marjinal adaptasyonu üzerinde etkili olmadığı bulundu.

Evaluation of the Effects of ultrasonic root-end cavity preparation with different surgical-tips and at different power-settings on marginal adaptation of root-end filling material

Background: The aim of this in-vitro study was to evaluate the effects of different ultrasonic surgical-tips and power-settings on marginal adaptation of root-end filling material. Methods: Fifty-four extracted human single-rooted teeth were selected for this study. The coronal parts of the teeth were removed at the cemento-enamel junction and the root canals were instrumented with a crown-down technique using ProTaper rotary files up to file F3 at the working length. The root canals were filled with ProTaper F3 gutta-percha and AH Plus root canal sealer using a single-cone technique. The apical 3 mm of each root was resected and the roots were divided into six experimental groups 15 rooteach. 10 roots were used as negative and positive control. Rootend cavities were prepared with diamond coated ultrasonic surgical tip, zirconium nitride coated ultrasonic surgical tip, stainless steel ultrasonic surgical tip at half power and high power settings. Rootend cavities were filled Super-EBA regular set. Marginal adaptation of root-end filling was evaluated by scanning electron microscopy The results were statistically analyzed with Kruskal-Wallis test. Result: There were no statistically differences between the marginal adaptations of the experimental groups (P>0,01). Conclusion: Under the conditions of this in-vitro study, it was observed that the ultrasonic surgical tips or power settings used during root-end cavity preparation did not affect the marginal adaptation of root-end filling material.

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