上海口腔医学 ›› 2014, Vol. 23 ›› Issue (1): 46-50.

• 基础研究 • 上一篇    下一篇

义齿稳固剂影响无牙下颌牙槽嵴应力分布的光弹性分析

钟群1, 彭艳1, 邬雪颖1, 夏萌培2   

  1. 1.上海市口腔病防治院, 上海 200031;
    2.上海应用技术学院 机械与自动化学院, 上海 00233
  • 收稿日期:2013-06-29 修回日期:2013-08-09 出版日期:2014-02-20 发布日期:2014-10-21
  • 通讯作者: 钟群,E-mail: zhongqun681115@qq.com
  • 作者简介:钟群(1968-),男,学士, 副主任医师。

Photoelastic analysis of mandibular edentulous alveolar bone with denture adhesives

ZHONG Qun1, PENG Yan1, WU Xue-ying1, XIA Meng-pei2   

  1. 1.Shanghai Stomatological Disease Center. Shanghai 200031;
    2.School of Mechanical Engineering of Shanghai Institute of Technology. Shanghai 200233,China
  • Received:2013-06-29 Revised:2013-08-09 Online:2014-02-20 Published:2014-10-21

摘要: 目的:针对Atwood 3级无牙下颌牙槽嵴制作下半口义齿,分析其使用义齿稳固剂前、后,在正中咬合力加载时牙槽骨的应力分布情况。方法:应用三维光弹实验方法,在Atwood 3级无牙颌环氧树脂光弹模型上制作全口义齿,并在下半口义齿组织面内使用和不使用义齿稳固剂,进行正中咬合下应力加载冻结,比较其应力分布。结果:下半口使用义齿稳固剂后,正中咬合加载时,牙槽嵴顶和颊、舌侧应力分布更均匀,牙槽嵴顶较不使用稳固剂应力明显上升。结论:临床上对于Atwood 3级牙槽嵴患者,采用下半口义齿修复时,使用义齿稳固剂不仅可以增加义齿稳定性,还可使下颌后牙牙槽嵴的主副承托区应力分布更趋均匀,减少应力集中导致的局部压痛。

关键词: 义齿稳固剂, 全口义齿, 光弹实验

Abstract: PURPOSE: To compare the stress distribution of supporting tissues in Atwood level 3 alveolar bones under the mandibular complete dentures with and without denture adhesives. METHODS: Photoelastic models of epoxy were fabricated according to the standard Atwood level 3 edentulous model. 1.5 kg force was vertically applied on the bite force loading device. After stress frozen, photoelastic model slices in posterior teeth area were observed and analyzed. RESULTS: When using denture adhesives, stresses distributed more adequately in the buccal and lingual side and the force of alveolar crest increased remarkably. CONCLUSIONS: To those with Atwood level 3 alveolar ridge and complete denture, denture adhesives can not only increase stability but also prevent local pressure under uneven stress distribution.

Key words: Denture adhesives, Complete denture, Photoelastic experiment

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