Physical and mechanical characterization and the influence of cyclic loading on the behaviour of nickel‐titanium wires employed in the manufacture of rotary endodontic instruments

Abstract

The mechanical behaviour of the NiTi wires was modified slightly by cyclic tensile loading in the superelastic plateau. As the changes tended towards stabilization, the clinical use of rotary NiTi ProFile instruments does not compromise their superelastic properties until they fracture by fatigue or torsional overload, or are otherwise discarded.