关键词: 镍钛根管器械, 切削性能, 影响因素, 表面处理

Abstract:

Nickel-titanium endodontic instruments exhibit the unique properties of superelasticity，flexibility and shape memory effect，which are the first choice for root canal preparation. The cutting ability of nickel-titanium instruments has always been the focus of clinicians. The cutting performance of the nickel-titanium endodontic instruments is affected by many factors. Scholars have developed a series of measures to improve the cutting ability of nickel-titanium endodontic instruments. This paper gives a brief overview of the internal factors，external factors，detection methods and improvement measures of the cutting performance of nickel-titanium instruments.

Key words: nickel-titanium endodontic instruments, cutting performance, influencing factor, surface treatment