全瓷冠桥修复体应力分布和疲劳及断裂失效分析的有限元方法  

Research and application of three-dimensional element analysis in stress characterization, fatigue and facture analysis for all ceramic crowns and bridges

作　　者：王勤琴[1] 赵克[2] 张新平[1] 

机构地区：[1]华南理工大学机械工程学院材料科学与技术研究所,广东广州510641 [2]中山大学光华口腔医学院.附属口腔医院口腔修复科,广东广州510055

出　　处：《国际口腔医学杂志》2008年第3期341-343,352,共4页International Journal of Stomatology

基　　金：广东省自然科学基金资助项目(7001542)

摘　　要：全瓷冠桥具有优异的美学特性及良好的生物相容性,但其脆性限制了它在后牙修复中的广泛应用。采用有限元方法建立全瓷修复体的三维分析模型,计算和分析模型的应力分布特征,并在此基础上对模型进行结构优化以及运用断裂力学方法对全瓷冠桥的寿命进行合理预测,可以为临床应用提供有效的理论指导。本文就三维有限元法用于全瓷冠桥修复的研究和应用进展进行综述和评价。All ceramic crowns and bridges exhibit excellent aesthetics and outstanding biocompatibility. However, the material brittleness has limited their wide application in molars. In order to provide effective theoretical instruction for clinical applications, a three-dimensional finite element method can be used. Through modeling, calculating and analysis, the stress characterization of all ceramic crowns and bridges can be obtained. Based on this, their structures can be optimized, and fatigue life can be reasonably predicted through fracture mechanics method. This article presented a review on recent advances in research and application of all ceramic restorations by three-dimensional finite element method.

关 键 词：全瓷冠 全瓷桥 有限元 疲劳 断裂 

分 类 号：R783[医药卫生—口腔医学]