Mechanical and Metallurgical Properties of Various Nickel-Titanium Rotary Instruments

Figure 2

Representative torsion test curves of all products from the torsional fracture test. Note that each NiTi alloy group has a typical curve form. PF: ProFile, OS: One Shape, PN: ProTaper NEXT, RC: Reciproc, WO: WaveOne, and HF: HyFlex CM.