摘要
以基于STL的网格实体建模方法,设计了修复体、基牙、牙周膜、骨皮质,骨松质和牙槽骨的三维几何模型。借助有限元分析,将力学模型简化为弯扭变形,确定了初步支架设计方案。同时通过施加真实口腔载荷,对支架结构进行了进一步的验证和优化,得到基于传统支架的改良设计方案Ⅱ-M和创新支架设计方案Ⅲ-M。计算表明较纯树脂粘接桥,对危险域里的应力值,方案Ⅱ-M能平均降低22.50%,方案Ⅲ-M则可达到37.80%。证明优化后的支架加强效果明显,对修复体能起到很好的保护作用。
In this study, the optimal design of fiber framework for composite resin-bonded fixed partial dentures was proposed. Firstly the preliminary design of fiber framework was finished under simplified load by finite element analysis. Then four types of real occlusal load applied to pontic element to assess and uheriorly optimize the project. By comparing the difference of stress distribution, it was found that the principal stress in modified conventional fiber framework pontic was averagely decreased by 22.50% against that in pure composite resin pontic, the stress in the fiber framework pontic was decreased by 37.80%.
出处
《中国生物医学工程学报》
CAS
CSCD
北大核心
2006年第4期492-496,共5页
Chinese Journal of Biomedical Engineering
关键词
粘接桥
玻璃纤维
复合树脂
FEA
优化设计
resin-bonded fixed partial denture
glass fiber
composite resin
FEA
optimal design
