三维有限元法分析复合树脂收缩应力的研究  

Simulation of composite polymerization shrinkage using 3D finite element model

作　　者：封纯真[1] 赵守亮[2] 凌伟[3] 储冰峰[1] 叶茜[1] 

机构地区：[1]解放军总医院老年口腔病科,医师北京100853 [2]同济大学口腔医学院,教授上海200072 [3]西安交通大学材料力学系,副教授陕西710032

出　　处：《中华老年口腔医学杂志》2009年第1期47-49,共3页Chinese Journal of Geriatric Dentistry

摘　　要：目的:研究模拟树脂的收缩应力的方法。方法:建立简单的有限元模块代表釉质、粘结剂、树脂,应用温度应力的原理,使树脂的体积产生收缩,同时利用材料力学的原理进行了可行性验证。结果:建立了模拟树脂收缩应力的模型。应力集中在弹性模量大的模块及洞形的线角部位。结论:采用温度应力的方法,可以较好的模拟收缩应力。Objective： To simulate polymerization shrinkage stress in composite. Methods： A disk with enamel, composite resin and adhesive layer was modeled by 3D finite element analysis. The shrinkage was simulated by means of temperature-dependent expansion. A plane model was used for validation. Results： Using temperature-dependent expansion to simulate polymerization shrinkage stress in composite is feasible. Maximum shrinkage stress was located at the margin and the line angles of the cavity. Higher elastic modulus part leads to higher stress distribution. Conclusion： Temperature-dependent expansion can simulate composite shrinkage properly.

关 键 词：收缩应力 三维有限元 温度应力 

分 类 号：R783.1[医药卫生—口腔医学]