有限元法分析镍钛根管器械折断的研究进展  

Research Progress of Instrument Fracture of Nickel Titanium Endodontic Analysis Using the Finite Element Method

作　　者：于莹[1] 姜艳丽[1] 

机构地区：[1]桂林理工大学有色金属及材料加工新技术教育部重点实验室,桂林541004

出　　处：《材料导报（纳米与新材料专辑）》2014年第1期158-160,共3页

基　　金：广西科学研究与技术开发计划项目(桂科合1346011-5)

摘　　要：镍钛合金是一种形状记忆合金,不仅有独特的记忆功能,还具有高阻尼、抗腐蚀和超弹性的特点,已广泛应用于根管预备器械。镍钛合金良好的成形能力加上独特的设计使弯曲根管保持原有的形态,进而达到理想的预备效果,但是镍钛根管器械潜在的折断问题使器械的力学性能成为了当今研究的热点。建立一个数学模型,利用有限元法分析在扭转和弯曲下镍钛根管器械的力学性能,可以获得在临床研究中无法得到的结果。综述了利用有限元法分析镍钛根管器械在扭转和弯曲疲劳下的应力分布的研究进展。As a kind of shape memory alloy, NiTi alloy not only has a unique memory function, but also hashigh damping, corrosion resistant and superelasticity characteristics. And it has been widely used in the field of medical equipment. The superelasticity of the material coupled with the design of the cross-section allows the NiTi rotaryinstruments to be used in curved root canals, and keep the original form. Nevertheless, there is a common perceptionof a potential risk of instruments fracture, which makes mechanical properties of NiTi rotary instruments becomes oneof the focal point in recent years. To develop a numerical model to compare the mechanical behavior of NiTi root canalsinstruments under torsion and bending, which can get results cannot be obtained in clinical research. The stress distri-bution of NiTi root canals instruments under torsional and bending research by three-dimensional finite element method, are reviewed.

关 键 词：有限元分析法 镍钛根管器械 力学性能 

分 类 号：TB84[一般工业技术—摄影技术]