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应用科学学报 ›› 2006, Vol. 24 ›› Issue (6): 637-641.

• 论文 • 上一篇    下一篇

数字图像分析用于下颌后磨牙及其桩核修复体

王伟1, 刘根娣2, 董萼良1, 何小元1   

  1. 1. 东南大学工程力学系, 江苏南京 210096;
    2. 东南大学附属中大医院, 江苏南京 210096
  • 收稿日期:2005-09-19 修回日期:2006-02-10 出版日期:2006-11-30 发布日期:2006-11-30
  • 作者简介:王伟,博士生,研究方向:光学测试,E-mail:ww117@seu.edu.cn;何小元,教授,博导,研究方向:光测力学,E-mail:mmhxy@seu.edu.cn
  • 基金资助:
    江苏省卫生厅科技基金重点科研课题资助项目(Z200319)

Image Analysis for Mandibular Molar and Post-Core Prosthesis

WANG Wei1, LIU Gen-di2, DONG E-liang1, HE Xiao-yuan1   

  1. 1. Department of Engineering Mechanics, Southeast University, Nanjing 210096, China;
    2. Zhongda Hospital, Southeast University, Nanjing 210096, China
  • Received:2005-09-19 Revised:2006-02-10 Online:2006-11-30 Published:2006-11-30

PDF

79

被引次数

6

摘要： 将下颌后磨牙及其桩核修复体包埋于复合树脂模拟的牙周组织中,形成18 mm×16 mm×22 mm的包埋块,利用数字化光学测试手段得到两者在垂直载荷作用下的位移和应变,并对其进行了力学分析.结果表明:(1)在同级载荷作用下,桩核修复体的应变大于原始牙,建议避免使用过大的咀嚼力;(2)桩核修复体虽然充分利用残根的生理几何特征,但分散牙体传递的[牙合]力却是一个渐进过程;(3)光测技术为口腔医学领域提供了另外一种有效的分析途径.

关键词: 工程力学, 数字图像分析, 桩核修复, 应变, 下颌后磨牙

Abstract: A normal mandibular molar and its post-core prosthesis were embedded in periodontal support simulated by composite resin and formed a embedded block with size 18 mm×16 mm×22 mm.By digital optical test, their displacement and strain were obtained under a vertical applied force.Meanwhile, mechanical characteristic were analyzed.Based on the study, the following results are obtained. (1) With loads at the same level, the strain of postcore prosthesis is higher than the strain of original molar;therefore, high occlusion loads should be avoided. (2) By postcore prosthesis, advantage of inherent geometry features of left root can be taken, which is a gradual process of dispersing occlusion loads. (3) It is proved that the digital optical method is an alternative means in stomatology.

Key words: engineering mechanics, strain, mandibular molar, post-core prosthesis, digital image analysis

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