摘要
目的:建立双根管牙及其桩核烤瓷冠的三维有限元模型,为其进行生物力学研究提供可靠的基础。方法:采用螺旋CT扫描,DICOM接口和图像处理软件,直接提取CT扫描数据,导入Ansys8.0的前处理程序中,并模拟修复体的设计。结果:模型生成了27867个节点和150936个四面体单元,重建了上颌第一前磨牙的三维有限元模型,此数学模型与实体模型具有高度的几何相似性、力学相似性。结论:CT扫描后,经DICOM数据直接建模,可以建立精确的双根管牙及其桩核烤瓷冠的三维有限元模型,使其生物力学的研究与桩核的设计更加科学、准确、直观。
Objective： To provide an ideal model for biomechanics researches of the dowel-core and PFM crown by constructing a three-dimensional finite element model. Methods： Spiral Computer Tomography （SCT） scanning technology was used in combination with DICOM software and Ansys8.0 software. Results： 27867 nodes and 150936 solid units were used to simulate the morphology and mechanical characters in the constructed upper premolar model. Conclusions： An ideal three-dimensional finite element model can be established by SCT technology and DICOM software, which provide a construction model method for oral biomechanical researches and optimum design of restoration.
出处
《口腔颌面修复学杂志》
2005年第4期293-295,F0003,共4页
Chinese Journal of Prosthodontics
关键词
桩核技术
三维有限元
模型
双根管牙
post and core technique
three-dimensional finite element
models
