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用Ansys Workbench 10.0有限元软件研究静态加载下种植体结构、低模量层的模量和厚度对骨界面应力分布的影响。用CAD(Pro/E Widefire 2.0)软件建立颌骨和种植体的三维有限元模型,设置整体低弹性模量型(1号)、仿生型(2号)、松质骨区低模量型(3号)和全致密型(4号)。结果表明:种植体的结构影响骨界面应力分布,2号种植体在松质骨和根端区的界面最大应力均低于另外3种结构种植体的;2号种植体的低模量层模量的降低有利于松质骨区界面应力传递致周围骨质,增加低模量层厚度能降低松质骨区界面应力,使界面应力分布更趋均匀。仿生型2号种植体在界面应力传递致周围骨质方面优于其它3种结构种植体。
Ansys Workbench 10.0 finite element software was used to study the effect of implant structure and modulus and thickness of low modulus layer on the stress distribution in the bone interface under static loading. A three-dimensional finite element model of jaw and implant was established by using CAD (Pro / E Widefire 2.0) software to set the overall low elasticity modulus (No.1), bionic (No.2), cancellous bone region low modulus 3) and all compact (4). The results showed that the structure of the implant affected the stress distribution in the interface of the bone. The maximum stress at the interface between the cancellous bone and the root end of the second implant was lower than that of the other three kinds of dental implants. The low modulus of the second implant The reduction of volume is conducive to the stress transfer around cancellous bone interface, and the increase of low modulus layer thickness can reduce the stress of cancellous bone interface and make the interface stress distribution more uniform. Bionic Type 2 implants are superior to the other three types of implants in terms of the stress-induced transfer of the surrounding bone.