上颌成组切牙三维有限元模型的建立  

Construction of a three-dimensional finite element model of groups of the maxillary incisors

作　　者：张理红 任家银[2] 赵书平[2] 王虎[2] 罗岷 田丽玛 

机构地区：[1]宜宾卫生学校口腔教研室,四川宜宾644000 [2]四川大学华西口腔医院 [3]四川宜宾德仁口腔门诊部

出　　处：《广东牙病防治》2012年第10期517-519,共3页Journal of Dental Prevention and Treatment

基　　金：宜宾市科技局重点科技计划研究基金资助项目(2010SF015)

摘　　要：目的建立上颌成组切牙的三维有限元模型。方法利用Micro-CT扫描技术扫描上颌成组切牙,结合Geomagic Studio及Unigraphics NX4平台建立上颌成组切牙的三维几何模型,导入有限元分析软件Ansys Work-bench 11.0中,建立起实体模型。结果建立的有限元模型共有单位35 873个,节点62 359个;模型形态逼真,具有较高的几何相似性,能够任意旋转、放大或者缩小,通过对模型施加不同大小的力,能以单独或者成组的方式观察和分析各个牙的受力情况。结论实验成功建立上颌成组切牙的三维有限元模型,该模型结构完整,能够较准确模拟上颌切牙的力学反应情况。Objective To construct a three-dimensional finite element model of groups of the maxillary incisors.Methods After the Micro-CT scanning groups of the maxillary incisors,with the help of Geomagic Studio and Unigraphics NX4,the 3-D geometric model was built,then the mesh model was established in Ansys Workbench 11.0.Results The shape of the model which contains 35 873 elements and 62 359 nodes was lifelike and the model could be rotated,enlarged and reduced arbitrarily.The stress of the teeth could be analyzed separately or by groups according to different stress on the upper incisors.Conclusion The three-dimensional finite element model of groups of the maxillary incisors was constructed successfully.It had intact structure,could simulate the stress response of the maxillary incisors accurately.

关 键 词：上颌成组切牙 三维有限元 MICRO-CT 

分 类 号：R814.42[医药卫生—影像医学与核医学]