摘要
目的探索一种可行的建立包含真实螺纹形态的牙种植体即刻负载三维有限元模型的方法,为牙种植体即刻负载相关研究提供模型支持。方法采用三维机械设计软件SolidW orks在计算机上建立螺纹型牙种植体、局部下颌骨块三维实体模型,将实体模型导入ABAQUS有限元软件,采用过盈配合法模拟实现即刻负载种植体骨界面初始应力,定义界面摩擦系数。结果在计算机上建立了真实螺纹形态牙种植体、下颌骨块的三维立体即刻负载有限元模型,随着过盈量的增加,界面初始应力相应逐渐增加。结论采用过盈配合法可模拟即刻负载种植体骨界面的初始应力状态,所建即刻负载有限元模型为牙种植体即刻负载研究打下了基础。
Objective To create 3-D models of immediately loaded screw-type dental implants for finite element analysis by computer. Methods Using the commercial code of SolidWorks, 3-D models of screw-type dental implants and a segment of mandibular bone were generated. By ABAQUS software, the 3-D implant-bone complex was meshed. The interfacial contact of bone and the implants was defined to be a frictional contact with the initial press-fit stress （by Interference Fit Option） to simulate the contact of immediately loaded implants and bone tissue. Results The finite element models of the immediately loaded screw-type implant were successfully created on the computer. As the interference fit got deeper, the interfacial initial press-fit stress got higher values. Conclusion The finite element models of the immediately loaded screw-type implants can be built with this method. The interfacial status of the primary press-fit stress can be simulated by the Interference Fit Options in the finite element software.
出处
《第三军医大学学报》
CAS
CSCD
北大核心
2006年第11期1246-1248,共3页
Journal of Third Military Medical University
关键词
螺纹型牙种植体
三维有限元
过盈配合
screw type dental implants
three dimensional finite element analysis
interference fit
