上颌切牙区3种不同形式种植固定桥三维有限元模型的建立  

Establishment of a three-dimensional finite element model of fixed bridge supported by implants with three different forms in the anterior maxilla

作　　者：黄颖荷[1] 聂二民[1] 陈霞云[2] 刘伟[1] 张春元[1] 胡玲玲[3] 

机构地区：[1]中山大学附属第一医院口腔科,广东省广州市510080 [2]中山大学附属第三医院口腔科,广东省广州市510630 [3]中山大学应用力学与工程系,广东省广州市510275

出　　处：《中国组织工程研究与临床康复》2010年第39期7263-7267,共5页Journal of Clinical Rehabilitative Tissue Engineering Research

基　　金：广东省科技厅社会发展项目(2007B080701029;2008B080703032)~~

摘　　要：背景:研究表明,三维有限元分析法是分析种植体周围骨界面生物力学分布的重要研究手段,精确的模型构建是三维有限元准确分析的基础,可为优化种植设计方案提供研究支持。目的:建立3种不同形式种植固定桥修复上颌切牙区的三维有限元模型,为研究其生物力学分布提供数学化模型。方法:利用CT扫描技术和Geomagic studio9.0软件、Mimics10.01软件的实体建模技术,结合ANSYS10.0有限元分析软件建立人上颌切牙区3种不同形式种植体支持固定桥的三维有限元模型。结果与结论:成功建立了三维有限元模型,总节点数为365173个,四面体总单元数为204854个。该模型获得上颌骨、上颌中切牙、侧切牙、种植体及瓷层的形态,具有良好的几何相似性。提示将CT扫描技术、数字图像处理技术与一系列计算机软件相结合,建立三维有限元模型的方法是行之有效的。BACKGROUND：Studies demonstrates that the analytical method of three-dimensional finite element is an important research method that analyzes the biomechanical distribution of the bone interface around implants. Accurate construction of three-dimensional finite element model that provides research support for the optimization of implant design is the basis of accurate analysis. OBJECTIVE：To establish a three-dimensional finite element model of fixed bridge supported by implants with three kinds of different forms in the anterior maxilla,and to provide the mathematical model for biomechanical research. METHODS：A three-dimensional finite element model of fixed bridge supported by implants with three kinds of different forms in the anterior maxilla was established by the CT scanning technology,the solid modeling technology of the Geomagic studio 9.0 software and Mimics 10.01 software,and the technology of Finite Element Analysis with the ANSYS 10.0 software. RESULTS AND CONCLUSION：The three-dimensional finite element model which was consisted of 204 854 elements and 365 173 nodes and obtained the forms of the jaw,maxillary central incisors,lateral incisors,implant and porcelain crown-bridge was successfully constructed,which had a good geometrical similarity. The method that combining the CT scanning technology and digital image treatment technology by using a series of computer software to establish a three-dimensional finite element model is conceivable.

关 键 词：种植体 种植义齿 有限元 三维有限元模型 数字化口腔科技术 

分 类 号：R783.6[医药卫生—口腔医学]