华西口腔医学杂志

• 基础研究 • 上一篇    下一篇

全牙列下颌骨体部三维有限元模型操作平台的构建

龚璐璐1, 朱静2, 丁祖泉1, 李国强2, 汪黎明2, 严柏镛3   

  1. 1.同济大学生命科学与技术学院, 上海200092; 2.上海市口腔病防治院中日友好诊室; 3.正畸科, 上海200001
  • 收稿日期:2008-04-25 修回日期:2008-04-25 出版日期:2008-04-20 发布日期:2008-04-20
  • 通讯作者: 龚璐璐,Tel:021- 65982586

Construction of platform on the thr ee- dimensional finite element model of the dentulous mandibular body of a normal per son

GONG Lu- lu1, ZHU Jing2, DING Zu- quan1, LI Guo- qiang2, WANG Li - ming2, YAN Boyong3   

  1. 1. School of Life Science and Technology, Tongji University, Shanghai 200092, China;2. Dept. of Sino- Japan Friendship Clinic, Shanghai Stomatological Disease Center, Shanghai 200001, China; 3. Dept. of Orthodontics, Shanghai Stomatological Disease Center, Shanghai 200001, China
  • Received:2008-04-25 Revised:2008-04-25 Online:2008-04-20 Published:2008-04-20
  • Contact: GONG Lu- lu,Tel:021- 65982586
  • About author:龚璐璐(1975-),女,黑龙江人,讲师,博士
  • Supported by:

    上海市卫生局科技发展基金资助项目(034018)

摘要:

目的探讨建立正常人全牙列下颌骨体部三维有限元模型的方法,为下颌骨体部及下牙列的生物力学分析提供一个操作平台。方法应用CT获取层厚为0.1 mm的CT断层影像,经自编软件提取部分图片轮廓关键点,运用自编程序生成Ansys可识别文件,在Ansys三维有限元分析软件中建立下颌骨体部及下牙列三维有限元模型的分析操作平台。结果建立了更精确、模拟功能更强的含下牙列的下颌骨体部三维有限元模型操作平台,既能精确显示其三维空间结构和形态,又能模拟临床各种牙列缺损状态。结论建立牙尖形态逼真、可作灵活模拟操作的含下牙列的下颌骨体部三维有限元模型,为进行临床各种牙列缺损状态及其修复的生物力学分析提供良好的平台。

关键词: 三维有限元法, 下颌骨, 牙列

Abstract:

Objective To develop a method to construct a three- dimensional finite element model of the dentulous mandibular body of a normal person. Methods A series of pictures with the interval of 0.1 mm were taken by CT scanning. After extracting the coordinates of key points of some pictures by the procedure, we used a C program to process the useful data, and constructed a platform of the three- dimensional finite element model of the dentulous  mandibular body with the Ansys software for finite element analysis. Results The experimental results showed that the platform of the three- dimensional finite element model of the dentulous mandibular body was more accurate and applicable. The exact three- dimensional shape of model was well constructed, and each part of this model, such as one single tooth, can be deleted, which can be used to emulate various tooth- loss clinical cases. Conclusion The three- dimensional finite element model is constructed with life- like shapes of dental cusps. Each part of this model can be easily removed. In conclusion, this experiment provides a good platform of biomechanical analysis on various tooth- loss clinical cases.

Key words: three- dimensional finite element method, mandibule, denture