Comparison of Cyclic Fatigue Resistance of Two Different Rotary NiTi Instruments (An In-Vitro Study)

Abstract

Aim: The aim of this study was to compare the dynamic CFR of M3-ProGold instruments and Pepsi Gold instruments. Material and methods: Eighty files of size 25/.06 of M3 Pro Gold files and Pepsi Gold files (each n = 40) were evaluated for dynamic cyclic fatigue resistance inside two artificial stainless-steel canals with 2 different radii [(60̊curvature, 3 and 5 mm curvature radii) at body temperature and immersed in distilled water at 37° ± 1°C. The NCF (number of cycles to failure) was documented. The data was analysed by the use of ANOVA and Tukey post hoc tests (P ≤ 0.05). Results: The Pepsi Gold instruments had a significantly greater NCF than the M3 Pro Gold files in both canal radii at body temperature. Conclusion: Pepsi Gold instruments have higher CFR than M3 Pro Gold instruments.