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应用CT扫描法，借助计算机系统建立了全下颌种植覆盖义齿的三维有限元模型，为研究其力学特性奠定基础。1材料和方法1．1实体模型的建立选择牙槽骨中度吸收的成人无牙下颌骨标本．作为构建有限元模型的解剖学基础.在双侧颏孔间区按要求制备4个圆柱形Branemark种植体受植骨床（
Using CT scanning method, a three-dimensional finite element model of total mandibular implant overdenture was established by computer system, which laid the foundation for the study of its mechanical properties. 1 Materials and methods 1.1 The establishment of solid model Select the moderate absorption of alveolar bone in adult patients without tooth. As an anatomical basis for the construction of the finite element model. Four cylindrical Branemark implants were prepared on the bilateral metatarsal area as required