牙种植体及其上部结构三维有限元模型的建立

Establishment of Three-dimensional Finite Element Model of Actual Dental Implants and Its Upper Structure

目的探讨建立牙种植体及其上部结构、下颌骨骨块的三维有限元模型的方法。方法使用Pro/ENGI-NEER wildfire(Pro/E)2.0软件建立包含牙种植体及其上部结构、下颌骨骨块三维实体模型,导入Ansyswork-bench 10.0有限元分析软件,进行单元划分及初始应力的验证分析,建立三维有限元模型。结果本研究建立了含有上部结构的牙种植体及下颌骨骨块三维有限元模型,牙种植体及其上部结构的大小、形态及尺寸与实体情况完全一致,应力分析与以往报道的三维有限元模型的研究结果亦相一致。结论应用pro/E 2.0软件的自适应功能可建立牙种植体及其上部结构的三维有限元模型,为后期力学分析提供准确、灵活、快速的平台。

Objective To explore the use of adaptive function of Pro/E software to establish the three-dimensional finite element model for dental implants,and its upper structure and jaw bones.Methods Pro/E software was used to establish the three-dimensional solid model including the dental implants and the upper structure,the mandible bone,then into ansysworkbench10.0 finite element analysis software,make the unit division,verify the initial stress analysis,and finally to establish the finite element model.Results This study established the three-dimensional finite element model which was made up of dental implants,its upper structure and jaw bones.The size and shape of dental implants and its upper structure were totally consistent with the entity situation.The result of stress analysis was also consistent with the previously reported findings of three-dimensional finite element model.Conclusion Application of adaptive function of pro/E software can create the implant and the three-dimensional finite element model,of its superstructure thus providing an accurate,flexible and fast platform for its post-mechanical analysis.