不同深度楔状缺损的应力分析  

Two-dimensional finite element strain analysis of teeth with different depth of wedge-shaped defects under loading.

作　　者：夏荣明[1] 吴小斌[1] 

机构地区：[1]北京市朝阳区南磨房医院口腔科,北京100022

出　　处：《口腔医学研究》2005年第4期443-444,共2页Journal of Oral Science Research

摘　　要：目的:研究不同深度的楔状缺损及其尖部牙体组织的应力分布。方法:建立下颌第一前磨牙模式图,选择4种不同深度的楔状缺损,应用二维有限元应力分析法,对楔状缺损及其尖部进行应力分析。结果:随着楔状缺损深度的增加,缺损应力呈增高的趋势。结论:楔状缺损对牙体破坏的速度是逐渐加快的,临床上应尽早对楔状缺损进行充填修复。Objective： To study the concentration of strain at the cervix of tooth with wedge - shaped defects and its top end. Methods： Two - finite element models of strain first premolar defected from longitudinal section were developed. Four different depths of wedge- shaped defects were respectively chosen, then the strain variation in defects and their top end was investigated. Results： The strain of wedg - shaped defects and their top end was raised with increasing depth. Conclusion： The rate that defects do damage to teeth is accelerated. In the clinic, wedge - shaped defects should be restored as early as possible.

关 键 词：深度 楔状缺损 心力 

分 类 号：R783[医药卫生—口腔医学]