氧化锆瓷基台与钛种植体联合应用中不同连接体设计的有限元分析  

Influence of connection type of zirconia abutment with titanium implant on stress distribution in abutment and bone using finite element analysis

作　　者：吴春锋[1] 谢乔 王书明[1] 宋应亮[1] 

机构地区：[1]第四军医大学口腔医学院,陕西西安710032 [2]解放军第422医院口腔科,广东湛江524005

出　　处：《临床口腔医学杂志》2014年第3期140-142,共3页Journal of Clinical Stomatology

摘　　要：目的:分析不同氧化锆基台对基台自身及钛种植体周围骨组织应力的影响,为氧化锆基台设计提供理论依据。方法:采用计算机辅助设计建立5种不同设计的氧化锆基台模型,并根据不同的基台模型设计了与之对应的种植体、牙槽骨及全瓷冠模型。用三维有限元方法对每个模型进行100 N的斜向加载,分析不同氧化锆基台的设计对基台自身及牙槽骨应力分布及应力峰值的影响。结果:5种设计的等效应力的分布基本一致,基台的应力主要集中在基台颈部连接体上方,皮质骨及松质骨的应力主要集中于骨与种植体连接的最上方。5种设计等效应力的峰值不同,圆形连接体设计时氧化锆基台,皮质骨及松质骨的等效应力峰值均小于其他各设计组。结论:圆形连接体设计是本研究5种设计中氧化锆基台与钛种植体相连的最佳设计形式。Objective：The purpose of this study was to investigate the effect of 5 different abutment types on the stress distribution in abutment and bone using finite element analysis. Method： A three dimensional （3D） model of the ante- rior maxilla was reconstructed. Five dental implant abutments were designed and analyzed independently in a virtual simula- tion of an Upper incisor replacement. Material properties, contact properties, physiological loading and boundary conditions were assigned to the 3D model. Result： The five abutments produced similar patterns of stress distribution. The stress of the abutment was mainly concentrated in the neck of the abutment, while the stress of Cortical bone and cancellous bone were mainly concentrated in the top of the bone and implant connection. The maximum equivalent stress of 5 kinds design were different. Compared with other design, Circular connection design has the smallest maximum equivalent stress in abutment, cortical bone and cancellous bone. Conclusion： It was concluded that abutment type has significant influence on the stress distribution in abutment and bone. Circular connection design is the best design for zirconia abutment connected to the titani- um implant in the five design of this study.

关 键 词：种植体 氧化锆基台 有限元分析 

分 类 号：R783.3[医药卫生—口腔医学]