义齿稳固剂影响无牙下颌牙槽嵴应力分布的光弹性分析

发布时间：2018-03-20 22:14

本文选题：义齿稳固剂　切入点：全口义齿　出处：《上海口腔医学》2014年01期 　论文类型：期刊论文

【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。
[Abstract]:Objective: to analyze the stress distribution of alveolar bone of Atwood grade 3 edentulous mandibular alveolar ridge before and after using denture stabilizer. Methods: three dimensional photoelastic method was used. The complete denture was made on the Atwood grade 3 edentulous epoxy resin photoelastic model, and the stress loading freezing was carried out in the lower half denture with or without denture stabilizer. Results: the stress distribution on the top of alveolar ridge and on cheek and tongue was more uniform when the middle part of denture was loaded with denture stabilizer. Conclusion: for Atwood grade 3 alveolar ridge patients, the application of denture stabilizer can not only increase the stability of denture, but also increase the stability of denture. The stress distribution in the primary and secondary bearing region of the alveolar ridge of the mandibular posterior alveolar ridge is more uniform and the local tenderness caused by the stress concentration can be reduced.
【作者单位】：上海市口腔病防治院;上海应用技术学院机械与自动化学院;
【分类号】：R783.6

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