R-相热处理镍钛根管锉的力学性能和根管预备成形能力

摘要

镍钛根管锉在根管治疗中的应用越来越广泛,为了提高镍钛根管锉的机械性能,R-相热处理技术被应用于其生产加工.本文对R-相热处理镍钛根管锉的制造工艺、弯曲性能、疲劳性能、扭转性能及预备成形能力等方面进行综述.%Nickel-titanium rotary instrument has been widely used in endodontic practice.Recently,R-phase heat treatment technique has been used in the manufacture of files to improve its mechanical properties.This article provides a review on manufacturing process,bending property,cyclic fatigue resistance,torsional resistance,and shaping ability of R-phase nickel-titanium instruments.