套筒冠修复下颌前牙缺失的三维有限元模型的建立

Establishment of three-dimensional finite element model of mandibular incisor defect restored by telescopic crown retainers

目的:建立下颌前牙缺失后套筒冠烤瓷桥修复的三维有限元模型,为其生物力学特性的研究提供基础。方法:采用螺旋CT扫描,分别应用Mimics 8.1、Geomagic studio8、Ansys10.0软件得到下颌前牙缺失后套筒冠烤瓷桥修复的三维外形、实体模型、有限元模型,并对所建模型进行可靠性验证。结果:所建三维有限元模型与实体模型具有高度的几何相似、力学相似性,网格质量较好。结论:利用CT扫描技术、数字图像技术和有限元的方法,能够建立出与实际情况近似的下颌前牙缺失后套筒冠修复的三维有限元模型,为进一步模拟、细化套筒冠修复缺失牙的有限元的模型提供方法和基础,为口腔生物力学的研究提供了有效途径。

AIM： To establish three - dimensional finite element （3D - FE） model of mandibular incisor defect restored by telescopic crown retainers. METHODS： CT scanning was used to obtain the 3D geometric model, reverse engineering software and Ansys10.0 were used to transform data, trim models and validate them. RESULTS： A 3D - FE model of mandibular incisor defect restored by telescopic crown retainers was established, which gave a possibility for the further research of its biomechanical property. CONCLUSION ： The feasible and effective model can be applied in the stress analysis of denture and teeth.