口腔颌面外科杂志2011，Vol.21Issue(1)：15-18,4.DOI:10.3969/j.issn.1005-4979.2011.01.004
应用三维有限元法对不同骨质牙种植修复体生物力学的研究
A Three-dimension Finite Element Analysis on Dental Implants Restoration with Different Bone Density
李翠 1郭新程 1韦艺 1王君 1黄建华 1陈良建 1鲁汝清1
作者信息
- 1. 湘雅三医院口腔科,湖南,长沙,410013
- 折叠
摘要
Abstract
Objective: A three-dimension finite element model was built to investigate the stress distribution on the implant-bone interface and the deviation of displacement of implant in four bones with different cortical bone thicken on two different loadings, and assess the biomechanical properties of implants with different bone density in the uncoupled and splinted crown, thus to provide reference for molar restoration in clinics. Methods: This study built simplified eight different mandible models. A three-dimension finite element analysis method was used. Two dental implants in the shape of cylinder (4.0x13 mm) and thread (4.8x10 nun) were implanted into the mandibular bone at the position of the first molar and the second molar with different cortical bone thickness. A force load of 100 N vertically and a force load of 45 N under 45° lingually inclined to occlusal were applied relatively to study the stress distribution on the implant-bone interface and the deviation of displacement of implant. Results: ①Maximum Von-mises stress values were manifested as Vs ＞ VL.when different repair modes were used in the same bone. ②When different repair modes were used in homologous bone, the max-values of displacement were manifested as Ds ＞ DL. Conclusion: Splinted crown is a better choice for molars restoration.关键词
牙种植/三维有限元/Von-mises应力Key words
dental implant/ three-dimensional finite element/ Von-mises stress分类
数理科学引用本文复制引用
李翠,郭新程,韦艺,王君,黄建华,陈良建,鲁汝清..应用三维有限元法对不同骨质牙种植修复体生物力学的研究[J].口腔颌面外科杂志,2011,21(1):15-18,4.
