临床口腔医学杂志Issue(8)：459-461,3.DOI:10.3969/j.issn.1003-1634.2015.08.004
粘接剂种类对全瓷桩核冠修复效果影响的三维有限元分析
Numerical analysis of the influence of agglomerant classes on stress distribution in all-ceramic post-core crown
摘要
Abstract
Objective:To provide the basis for the design of clinical treatment of all-ceramic post-core crown of ante-rior teeth prosthodontics,the influence of agglomerant classes on the stress distribution in all-ceramic crowns under load was studied numerically. Method:The finite element analysis (FEA) model of a standard all-ceramic post-core crown of the upper mandible central incisor was established using spiral CT and CAD software ,strength was loaded,and ANSYS software was used to analyze the stress values of the core layer、the veneer layer and the agglomerant layer on three variety type of agglomerant,including the Panavia,the 3M RelyX Unicem,and the the zinc phosphate cement. Result:According to distri-bution of the stress pattern,Von mises stress is located on the lip side of the 1/3 root and the maximal tensile stress on the lingual side of the 1/3 root.Under the load,the stress in residual dentine was shown to be decreasing with increasing elas-tic modulus of adhesive material,the stress in adhesives layer was shown to be increasing with increasing elastic modulus of adhesive material. Conclusion:The clinical course of root canal preparation should be extended as far as possible in the near-and far,in order to retain morel lip and lingual tooth structure and to reduce the risk of occurrence of root fracture. It suggests that choosing lower elastic modulus of adhesive is able to protect bonding interface of post restoration.关键词
粘结剂/全瓷冠/桩核冠/有限元分析Key words
agglomerant/All-ceramic crown/post-core crown/finite element analysis分类
医药卫生引用本文复制引用
李冰,武秀萍,马雅静,邓菁菁,武啸..粘接剂种类对全瓷桩核冠修复效果影响的三维有限元分析[J].临床口腔医学杂志,2015,(8):459-461,3.基金项目
山西省卫生计生委科研项目 （）
