含不同种植体的腭部三维有限元模型的建立

The Creation of Three-dimensional Finite Element Models of Partial Maxillary Anchorage with Different Implants

目的:通过建立一个含不同直径、不同长度种植体的上颌骨三维有限元模型,并进行应力分析,选出最佳的支抗种植体。方法:采用螺旋CT扫描、数字影像传输、CAD技术、UG和ANSYS软件相结合的方法,建立部分上颌骨三维有限元模型,将不同直径、不同长度的支抗种植体植入腭部。结果:建立了符合生物力学研究需要的含腭部种植支抗的部分上颌骨三维有限元模型,探索出一条数字化程度高的三维有限元建模方法。结论: 应用螺旋CT扫描、数字影像传输以及UG、ANSYS软件相结合的方法,建立含支抗种植体的部分上颌骨三维有限元模型是切实可行和有效的。模型与生物实体真实结构具有良好的几何相似性,为有限元研究提供科学的参考依据。

Objective: Built a three-dimensional finite element maxillary model including different diameter and length anchorage implant and analysis it, which can be used to chose the best implant. Methods: The three-dimensional finite element model of partial maxillary was constructed by means of spiral CT scanning, digital image transfer, CAD technology, UG engineering design program and ANSYS software. The palatal implant with different diameter and different length were implanted in the palatine. Results: The model of palatal implant anchorage was successfully constructed, meeting the needs of biomechanical study. Conclusion: The method to develop a three-dimensional finite element model of partial maxillary implant anchorage adopting spiral CT, image transfer and transcription, and 3D-FEM are feasible and effective. As the model and real structure of organism have such geometrical comparability, it can be scientific referenced foundation to the research of finite element method.