Analysis of dynamic cyclic fatigue resistance of different endodontic nickel–titanium instruments with different sterilization methods: An in vitro study
Year: 2025
Type: article
Abstract: Aim: This study aimed to evaluate the influence of autoclave sterilization on the cyclic fatigue resistance of nickel-titanium (NiTi) endodontic files with different NiTi alloy treatments. Materials and Methodology: The research examined Hyflex CM, Bassi Logic, TruNatomy, and ProTaper Gold files, which were divided into control, conventional sterilization, and flash sterilization groups. Poststerilization, the instruments were tested using a custom-made Dynamic Cyclic Fatigue Testing Device replicating root canal procedures. Group 1 used HyFlex CM (size 25, taper 0.04), Group 2 used Bassi Logic (size 25, taper 0.04), Group 3 used TruNatomy (size 25, taper 0.04), and Group 4 used ProTaper Gold (size F1). After rotating each instrument until it fractured, the number of cycles to failure was determined and the time to fracture was noted. Statistical Analysis: tests. Results: HyFlex CM had the highest fracture resistance, whereas ProTaper Gold had the lowest. Sterilization increased the cyclic fatigue resistance of HyFlex CM, Bassi Logic, and ProTaper Gold but decreased that of TruNatomy. Conclusion: The study concluded that sterilization enhances cyclic fatigue resistance, except for TruNatomy files, and emphasized understanding NiTi alloy properties to mitigate instrument failure.
Authors: Neeta Patel, Akshayraj Kantilal Langaliya, Shwetika Patel, Anjali Kairav Kothari, Gunja Malaviya, Siddharth Yadav
Language: English
Subfield: Oral Surgery
Field: Dentistry
Domain: Health Sciences
Open Access status: hybrid
OpenAlex ID: W4409138784