摘要
目的:旨在探讨一种建立含多个种植体无牙下颌骨三维有限元模型的方法,为下颌种植覆盖义齿中种植体位置的优化设计提供研究手段。方法:应用薄层CT扫描和CATIA建模软件,对层厚为1mm的无牙下颌骨CT断层影像进行分析处理,结合ABAQUS三维有限元软件建立含4个标准ITI种植体的有限元模型。结果:所建立的模型精确且无损伤性,图形、图像和数据可重复使用,结构相似性好,可根据需要模拟相应的由4个种植体支持的覆盖义齿的应力分布情况。结论:CT扫描结合建模软件的应用,为三维有限元模型的建立提供了准确、简洁的方法,可用于相应的生物力学研究。
AIM： To establish a three dimensional finite element model of edentulous mandible in which four implants were inserted and provide methods for research on optimum design of implant location in mandibular implant - supported overdenture. METHODS ： The advanced CT scanning and modeling software of CATIA were used to manage and analyse the data of edentulous mandibular CT scanning images, which slice thickness was 1 mm. Two finite element models with four standard ITI implants inserted respectively were built with the three - dimensional finite ele- ment software of ABAQUS. RESULTS ： The established models had the qualities of accurate and non - invasive. Moreover, the acquired images, figures and data may be analyzed tautologically. The structure of finite element models had good similarity with real mandible. The models may simulate stress distribution of mandibular overdenture to which could be supported by 4 implants according to different study purpose. CONCLUSION： The application of CT scan- ning and modeling software may provide the accurate and compact method for establishing the three dimensional finite element models of edentulous mandible with 4 impalnts. The models can be applied to the correlative study of biomechanics.
出处
《牙体牙髓牙周病学杂志》
CAS
2008年第10期552-555,592,共5页
Chinese Journal of Conservative Dentistry
关键词
种植体
无牙下颌骨
有限元模型
dental implant
edentulous mandible
finite element model
