The Effect of Temperature on Cyclic Fatigue of Nickel-titanium Rotary Endodontic Instruments

In this in vitro study, temperature was found to significantly affect the cyclic fatigue of nickel-titanium rotary files. At each tested temperature, NCF was the highest for the EF group followed by the VB group and lowest for the ESX group. Future cyclic fatigue studies should be conducted at body temperature.