镍钛合金根管器械抗周期性疲劳的研究进展  

Advanced research on cyclic fatigue resistance of nickel-titanium endodontic instruments

作　　者：杨柳[1] 李颂[1] 

机构地区：[1]安徽医科大学口腔医学院,安徽合肥230032

出　　处：《牙体牙髓牙周病学杂志》2009年第5期298-302,共5页Chinese Journal of Conservative Dentistry

摘　　要：镍钛合金根管器械因其优良的机械性能而广泛应用于根管治疗领域,特别是预备弯曲根管。但是在治疗过程中因器械周期性疲劳发生的折断不仅影响治疗效果而且给临床医生带来很大的困扰。该文综述了近几年镍钛合金根管器械抗周期性疲劳的研究进展,帮助临床医生了解影响镍钛合金器械抗周期性疲劳的相关因素,以预防或减少器械折断的发生。Root canal treatment has benefited from the introduction of nickel - titanium （NiTi） instruments that have superordinary machinal properties and have been shown to facilitate preparations for curved root canals. But instrument fracture as a result of cyclic fatigue in use remains a serious problem for clinician and can jeopardize the outcome of the root canal treatment. This article reviewes the factors involved in cyclic fatigue resistance of nickel - titanium endodontic instruments, and contributes to clinician to understand cyclic fatigue of these instruments to prevent unexpected fracture.

关 键 词：镍钛合金器械 周期性疲劳 根管预备 

分 类 号：R783.1[医药卫生—口腔医学]