腭穹隆形态对上颌全口义齿基托位移的影响  

Three dimension finite element analysis on the effect of palatal vault shape on the movement of maxillary complete denture base

作　　者：肖敏[1] 白乐康[1] 安虹[1] 

机构地区：[1]西安交通大学口腔医院修复科,主治医师陕西710004

出　　处：《口腔颌面修复学杂志》2008年第4期254-256,294,共4页Chinese Journal of Prosthodontics

基　　金：陕西省科学技术研究发展计划项目(No.2004K16-G1);西安交通大学口腔医院青年科研基金

摘　　要：目的:研究腭穹隆形态对上颌全口义齿基托位移的影响。方法:模拟5种咬合状态,对尖、平、凹3种腭穹隆形态的上颌全口义齿的三维有限元模型进行加载。结果:3种腭穹隆形态上颌全口义齿基托在5种加载方式下,凹型腭穹隆形态基托的上腭前部及后缘区向黏膜组织的下压位移最大,基托边缘封闭区背离黏膜组织的位移最小。基托的位移方式因加载方式不同而不同。结论:上颌全口义齿基托位移方式及大小与加载方式有关;腭穹隆形态对上颌全口义齿基托位移方式无明显影响,对位移值大小有影响。Objective： To study the effect of different palatal vault shape on the movement in maxillary complete denture. Methods： Using three dimensional finite element method （3-D FED）, simulating five bite states, putting five loading conditions on 3-D FED model ofmaxillary complete denture with three different palatal vault shape. Results： The denture base of upper edentulous jaw with deep palatal has the maximum movement values of thrusting to mucosa in antepalate area and post dam area under five kinds of loading conditions. The deep palatal base has the minimum movement values of reverse to mucosa in upper buccal flange area. Conclusion： Loading condition can change the type and the value of move- ment. Palatal vault shape can change the value of movement of maxillary complete denture base, but can not change the type of movement.

关 键 词：义齿 全口 上颌 腭穹隆形态 加载方式 三维有限元法 位移 

分 类 号：R783[医药卫生—口腔医学]