CAJ | 학술논문

目的:建立下颌后牙单端固定桥及其支持组织修复前后的三维有限元模型.方法:以人类正常牙列完整的下颌骨标本为建模基础,采用CT扫描技术,利用AutoCAD与ANSYS软件建立左侧下颌后牙单端固定桥及其支持组织修复前后的几何模型和三维有限元模型.结果:构建的下颌后牙单端固定桥修复前后的几何模型接近中国人牙齿的实际尺寸.修复前、后牙体、牙周膜及牙槽骨的三维有限元模型分别划分为142 640个节点、101 938个单元和168 756个节点、119499个单元.结论:采用CT扫描技术,结合AutoCAD与ANSYS软件所建模型结构层次清晰、单元划分精细,具有良好的形态相似性和还原性,能够满足模拟加载的需要.
목적:건립하합후아단단고정교급기지지조직수복전후적삼유유한원모형.방법:이인류정상아렬완정적하합골표본위건모기출,채용CT소묘기술,이용AutoCAD여ANSYS연건건립좌측하합후아단단고정교급기지지조직수복전후적궤하모형화삼유유한원모형.결과:구건적하합후아단단고정교수복전후적궤하모형접근중국인아치적실제척촌.수복전、후아체、아주막급아조골적삼유유한원모형분별화분위142 640개절점、101 938개단원화168 756개절점、119499개단원.결론:채용CT소묘기술,결합AutoCAD여ANSYS연건소건모형결구층차청석、단원화분정세,구유량호적형태상사성화환원성,능구만족모의가재적수요.
Aim:To establish three-dimensional finite element models of a human mandibular molar cantilever fixed bridge to supply biomechanics behavior of the periodontal tissue. Methods: A normal hu-man mandible was used as an anatomy foundation to build geometry models and three-dimensional finite element models which are completed with CT scaning, Auto CAD software and ANSYS software before and after restoration of the mandibular molar cantilever fixed bridge and the corresponding periodontal substance. Results: The constructed geometry models are similar to chinese teeth in size. For the three-dimensional finite model including teeth, periodontal ligament and alveolar bone, there are 142640nodes, 101 938 elements before restoration and 168 756 nodes, 119 499 elements after restoration. Con-clusions:Establishing the models of the teeth and periodontal tissues by CT scanning technique, Auto-CAD and ANSYS software have clear hierarchical structures and fine element partitions. The constructed models have good similarity to the morphology of the three-dimensional images. They can serve for the needs of the three-dimensional stress analysis.