中国组织工程研究

中国组织工程研究 ›› 2010, Vol. 14 ›› Issue (4): 637-640.doi: 10.3969/j.issn.1673-8225.2010.04.015

• 数字化骨科 digital orthopedics • 上一篇    下一篇

逆向工程法建立下颌第一磨牙种植体有限元模型

朱  强，汪大林，邱小倩，王少海   

  1. 解放军第二军医大学附属长海医院口腔科，上海市200433
  • 出版日期:2010-01-22 发布日期:2010-01-22
  • 作者简介:朱 强★，男，硕士，主治医师，主要从事口腔修复学方面的研究。 txzdzq@hotmail.com

Mandibular first molar implant finite element models established by reverse engineering method

Zhu Qiang, Wang Da-lin, Qiu Xiao-qian, Wang Shao-hai   

  1. Department of Stomatology, Changhai Hospital Affiliated to Second Military Medical University of Chinese PLA, Shanghai   200433, China
  • Online:2010-01-22 Published:2010-01-22
  • About author:Zhu Qiang★, Master, Attending physician, Department of Stomatology, Changhai Hospital Affiliated to Second Military Medical University of Chinese PLA, Shanghai 200433, China txzdzq@hotmail.com

PDF

656

被引次数

18

摘要：

背景：逆向工程建模在以往的研究中也较多采用，但针对种植方面建模的研究却鲜见，尤其下颌磨牙种植方面的研究更为少见。而下颌磨牙是牙列中缺失率最高的，所以利用逆向工程建立含下颌磨牙种植义齿的颌骨三维有限元模型，对下颌磨牙种植修复的研究具有参考价值。
目的：利用逆向工程快速建立含下颌磨牙种植义齿的颌骨三维有限元模型，为口腔生物力学的研究提供数学模型基础。
方法：通过螺旋CT扫描正常下颌骨，Mimics软件读取断层影像数据、数据分割、三维重建，应用Magics软件优化网格设计，Pro/E软件前处理实体模型，SolidWorks2007软件建立三维有限元模型并划分网格、求解。
结果与结论：成功地重建了正常牙槽骨高度的下颌第一磨牙种植体三维有限元模型，与实体模型具有高度的几何相似性，力学性质、网格质量较好，模型可以根据需要进行简便易行的修改。可为研究不同种植设计方式修复下颌第一磨牙种植体周围骨的应力分析，提供极好的模型支持。

关键词: 磨牙, 种植体, 三维有限元, 应力分布, 逆向工程, 数字化医学

Abstract:

BACKGROUND: Reverse engineering modeling has been widely used in previous studies. However, there are a few studies on implantation modeling, especially in aspects of mandibular molar implantation. The mandibular molar has high miss rate in dentition. Thus, to establish three-dimensional finite element models of a jaw bones with mandibular molar implant denture using reverse engineering shows a great parameter value for research of mandibular molar implantation repair.
OBJECTIVE: To establish a three-dimensional finite element model of a mandibular molar with dental implant inserted in mandibular molar area using reverse engineering, and to provide mathematical model basis for biomechanics researches of stomatology.
METHODS: Establish three-dimensional model, divide mesh and calculate by Solidworks 2007 through scanning mandible by screw jaw using helix CT, obtaining data from images, separating data, rebuilding three-dimension using Mimics software, optimizing the design of mesh by Magics software, and dealing with solid model by Pro/E preprocessor.
RESULTS AND CONCLUSION: A three-dimensional finite element model of mandibular first molar implant with regular depth was established, which has high geometrical similarity, good properties of mechanics and mesh, and can be easily modified. This can provide excellent model support for studying the stress analysis of different designs on restoring mandibular first molar implant.

中图分类号: