中国现代医学杂志2018，Vol.28Issue(18)：56-61,6.DOI:10.3969/j.issn.1005-8982.2018.18.011
不同咀嚼功能下全瓷固定桥牙弓曲率的三维有限元研究
Three-dimensional finite element study on arch curvature and different masticatory functions of all-ceramic fixed bridge
摘要
Abstract
Objective To study the influence of arch curvature and different masticatory functions of all-ceramic fixed bridge on stress and its distribution. Methods With reverse engineering method, the digital model of all-ceramic fixed bridge was inverted based on left upper incisor and left upper first premolar. According to the arch curvature of the fixed bridge, four sets of models were established. Each model was loaded on either retainers or the pontic. Stress value and the distribution of the fixed bridge were analyzed by the three-dimensional finite element method. Results With the increase of arch curvature of the fixed bridge, the first principal stress and the equivalent stress value of the fixed bridge increased significantly. Under the same load condition, the stress extremum of the second incisor group were obviously upregulated compared with that of the first premolar group. Conclusion Increase of the arch curvature, stress value of the fixed bridge, and distance away from first premolar the load position is closely associated with increase of stress of the fixed bridge.关键词
载荷/曲率/应力/有限元Key words
load/curature/stress/finite element分类
医药卫生引用本文复制引用
陆晓丰,凌厉,董宁,董海东,袁秀祥..不同咀嚼功能下全瓷固定桥牙弓曲率的三维有限元研究[J].中国现代医学杂志,2018,28(18):56-61,6.基金项目
江苏省无锡市医院管理中心面上项目(No:YGZXM1552) （No:YGZXM1552）
