Effect of Environment on Fatigue Failure of Controlled Memory Wire Nickel-Titanium Rotary Instruments

0099-2399/ $- see front matter Copyright ª 2012 American Association of Endodontists.liquid media than in air. (J Endod 2012;38:376–380) processes (16–19). Recently, thermal treatment of NiTi alloy is used to optimize the mechanical properties of this alloy (16, 18–23). NiTi rotary instruments (TyphoonAbstract Introduction: This study examined the fatigue behavior of 2 types of nickel-titanium (NiTi) instruments made from a novel controlled memory NiTi wire (CM wire) under various environment conditions.Methods: Thre