生物功能性全口义齿牙槽骨的三维光弹应力分析  

Three-dimensional photoelastic analysis of edentulous alveolar bone supported with biofunctional complete dentures

作　　者：佘文珺[1] 张青青[1] 潘瑾[1] 张富强[1] 

机构地区：[1]上海交通大学医学院附属第九人民医院口腔修复科.上海市口腔医学重点实验室,上海200011

出　　处：《临床口腔医学杂志》2010年第9期523-525,共3页Journal of Clinical Stomatology

基　　金：上海市科学技术委员会资助(08dz2271100);上海市重点(特色)学科建设项目资助(S30206;T0202)

摘　　要：目的:研究生物功能性全口义齿在各向咬合状态时下颌牙槽骨的应力分布。方法:标准无牙颌模型翻制环氧树脂模型,制作生物功能性全口义齿,分别在正中、前伸、侧向咬合时进行三维光弹应力分析。结果:正中牙槽骨内最大应力出现在第一磨牙区牙槽嵴舌侧;侧向牙槽骨内最大应力值出现在双侧第二磨牙区,工作侧最大应力出现在牙槽嵴唇颊侧,平衡侧最大应力出现在牙槽嵴舌侧;前伸牙槽骨内最大应力出现在第二磨牙区舌侧。结论:生物功能性全口义齿在各向咬合状态时下颌牙槽骨的应力分布基本与平衡理论相一致。Objective：To study stress distribution of mandibule supported with biofunctional complete dentures.Method：Photoelastic models of epoxy were fabricated according to the standard mandibular edentulous model.The biofunctional complete dentures were made.Force was applied in conditions of centric,lateral and protrusive occlusion.Stress distribution of mandibule was studied with three-dimensional photoelastic analysis.Result：Maximum stress was observed on the lingual side of first molar alveolar ridge in centric occlusion.In lateral occlusion it was observed on the buccal side of second molar alveolar ridge for working side and on the lingual side of second molar alveolar ridge for balanced side.In protrusive occlusion maximum stress was observed on the lingual side of second molar alveolar ridge.Conclusion：Stress distribution of mandibule supported with biofunctional complete dentures was in accordance with the principle of balanced occlusion.

关 键 词：无牙颌 生物功能性全口义齿 三维光弹应力分析 

分 类 号：R783.6[医药卫生—口腔医学]