Influence of cortical bone quality on stress distribution in bone around dental implant
Influence of cortical bone quality on stress distribution in bone around dental implant
复制标题
DOI：
10.4012/dmj.24.219
复制
发表时间：
2005-06-01
影响因子：
2.5
通讯作者：
Aida, M
中科院分区：
文献类型：
--
作者：
Kitagawa, T;Tanimoto, Y;Aida, M
本研究利用有限元方法 (FEM) 探讨皮质骨的厚度和杨氏模量如何影响牙种植体周围骨骼的应力分布。有限元种植体骨模型由钛基台、钛固定装置、金合金固定螺钉、松质骨和皮质骨组成。结果表明，冯米塞斯等效应力在牙种植体周围的皮质骨中达到最大值。经调查发现，随着皮质骨厚度的增加，骨中最大冯米塞斯等效应力降低。另一方面，骨中最大冯米塞斯等效应力随着皮质骨杨氏模量的增加而增加。总之，证实了von Mises等效应力对皮质骨的厚度和杨氏模量敏感。
Using finite element method (FEM), this study sought to investigate how the thickness and Young's modulus of cortical bone influenced stress distribution in bone surrounding a dental implant. The finite element implant-bone model consisted of a titanium abutment, a titanium fixture, a gold alloy retaining screw, cancellous bone, and cortical bone. The results showed that von Mises equivalent stress was at its maximum in the cortical bone surrounding dental implant. Upon investigation, it was found that maximum von Mises equivalent stress in bone decreased as cortical bone thickness increased. On the other hand, maximum von Mises equivalent stress in bone increased as Young's modulus of cortical bone increased. In conclusion, it was confirmed that von Mises equivalent stress was sensitive to the thickness and Young's modulus of cortical bone.