不同材料套筒冠的理论受载分析  

Three-dimensional Finite Element Stress Distribution and Displacement Analysis of Alveolar Ridge Retained by Conical Telescope

作　　者：林映荷[1] 满毅[1] 梁星[1] 屈依丽[1] 陆轩[1] 

机构地区：[1]四川大学华西口腔医学院,成都610041

出　　处：《四川大学学报（医学版）》2004年第6期860-862,共3页Journal of Sichuan University(Medical Sciences)

基　　金：四川省科技厅应用基础研究基金 (批准号 D3 0 1SY0 5 1-69)资助

摘　　要：目的　研究使用套筒冠义齿修复游离缺失时 ,用四种不同材料制作套筒冠金属部分的套筒冠义齿在受载情况下缺牙区牙槽嵴的表面应力和位移。方法　采用螺旋 CT扫描、自编程序和 ANSYS软件建立起精确的下颌骨三维有限元模型 ,在其上进行加载 ,分析无牙区牙槽嵴的受力和位移情况。结果　不同材料制作其金属部分的套筒冠义齿在受力情况下无牙区牙槽嵴的位移和应力无统计学差异。结论　从力学的角度发现 。Objective To study the stress distribution and displacement of edentulous alveolar ridge of removable partial denture which is retained by using conical telescope. Methods An ideal three dimensional finite element model was constructed by using SCT image reconstruction technique, self-programming and ANSYS software. The static load was applied. The stress and displacement characteristics of these different types of materials which form the metal part of the conical telescope were compared and analyzed. Results Generally, the four materials produced almost the same stress and displacement at the site of the edentulous alveolar ridge. Conclusion From the viewpoint of dynamics, the application of different materials in making the metal part of conical telescope is feasible.

关 键 词：三维有限元 套简冠 可摘局部义齿 应力 位移 

分 类 号：R783[医药卫生—口腔医学]