Effect of different torque settings selected during instrumentation on fracture strength of endodontically treated teeth

Year 2022, Volume: 9 Issue: 3, 851 - 855, 26.12.2022

Demet Altunbaş , Eda Gürsu

https://doi.org/10.15311/selcukdentj.1033713

Abstract

Background: The study evaluated the effect of root canal instrumentation at low and high torque settings on the fracture strength of endodontically treated teeth.
Methods: Ninety extracted single-rooted human mandibular incisors were randomly divided into one control (CG) and two experimental groups (n=30): no instrumentation or filling (CG), instrumentation with ProTaper Universal files at low torque settings, and instrumentation with ProTaper Universal files at high torque settings. Root canal filling was performed with an epoxy resin-based sealer and gutta-percha using a single-cone technique in the experimental groups. Each specimen was tested for fracture strength. The analysis of variance and Tukey test were used to analyze the obtained data. The significance level was set at 0.05.
Results: Statistically significant differences were observed between the groups (p = 0.001). While the difference between the CG and low torque groups was not significant (p > 0.05), the difference between the CG and high torque, low and high torque groups was significant (p < 0.05).
Conclusion: According to this study results, since the lowest fracture strength value was observed in the high torque group, clinicians may be advised to choose the lowest torque settings recommended by the manufacturers for rotary systems.

Keywords

Endodontics, Root canal preparation, torque

Thanks

The authors thank Dr. Ziynet Çınar for statistical analysis.

Enstrümantasyon sırasında seçilen farklı tork ayarlarının endodontik tedavi görmüş dişlerin kırılma dayanımına etkisi

Abstract

Amaç: Bu çalışma, düşük ve yüksek tork ayarlarında yapılan kök kanal enstrümantasyonunun endodontik tedavi görmüş dişlerin kırılma dayanımı üzerindeki etkisini değerlendirdi.
Gereç ve Yöntemler: Doksan adet çekilmiş tek köklü insan mandibular kesici dişi rastgele bir kontrol (CG) ve iki deney grubuna ayrıldı (n=30): enstrümantasyon veya kök kanal dolumu yok (CG), düşük tork ayarlarında ProTaper Universal eğelerle enstrümantasyon ve yüksek tork ayarlarında ProTaper Universal eğelerle enstrümantasyon. Deney gruplarında kök kanalları epoksi rezin esaslı pat ve güta-perka ile tek kon tekniği kullanılarak dolduruldu. Her örnek kırılma dayanımı açısından test edildi. Varyans analizi ve Tukey testi elde edilen verilerin analizinde kullanıldı. Anlamlılık düzeyi 0.05 olarak belirlendi.
Bulgular: Gruplar arasında istatistiksel olarak anlamlı farklılıklar gözlendi (p = 0.001). CG ve düşük tork grupları arasındaki fark anlamlı değilken (p > 0.05), CG ve yüksek tork, düşük ve yüksek tork grupları arasındaki fark anlamlıydı (p < 0.05).
Sonuç: Bu çalışmanın bulgularına göre, yüksek tork grubunda en düşük kırılma dayanımı değeri gözlemlendiğinden, klinisyenlere üreticilerin döner sistemler için önerdiği en düşük tork ayarlarını seçmeleri önerilebilir.

Keywords

Endodonti, kök kanal preparasyonu, tork

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