上颌骨种植体与天然牙三维有限元模型的建立

The Investigation of Modeling Three-dimensional Finite Element Solid of Implant and Nature Teeth in Human Maxillary Complex

探讨获得种植体与天然牙在上颌骨复合体三维影像以建立三维有限元模型的方法。采用螺旋CT断层扫描技术,数字影像与转录技术,自编程序与ANSYS软件相结合,将CT扫描图像转换为可用于有限元建模的数值图像。结果表明:三维有限元实体模型与螺旋CT三维重建影像比较,几何相似性与还原性良好,材料构造合理。说明采用螺旋CT扫描技术及ANSYS软件,建立上颌骨种植体模型切实可行,结果令人满意。

To obtain three-dimensional image of implant and nature teeth in human maxillary complex in order to develop its 3-D finite element model. Combining spiral CT scanning, digital image conversing and recording technology, together with ANSYS software, the CT tomographic scanning image was changed to the numerical image used to finite element solid modeling.Results showed that compared with 3-D image reconstructed by spiral CT, geometric similarity and sharp restoration of 3-D finite element solid model were good. The structure of material was reasonable. An ideal 3-D finite element model of implant in human maxillary was constructed with CT scanning and ANSYS software.It is concluded that the method to develop 3-D finite element model of scanning and ANSYS software is feasible.