不同直径和数目种植体支持修复下颌第一磨牙的有限元分析  

FEM analysis of mandibular first molar restoration supported with different diameters and numbers of implants

作　　者：陶江丰[1] 陈宁[2] 顾卫平[2] 吕令毅[3] 汤伟方[3] 

机构地区：[1]东南大学医学院附属江阴医院口腔科,江阴214400 [2]南京医科大学附属口腔医院口腔医学研究所,南京210029 [3]东南大学土木工程学院,南京210096

出　　处：《口腔医学》2009年第10期522-524,537,共4页Stomatology

基　　金：江苏省科技厅社会发展项目(BS2006062);江苏省卫生厅科研基金资助项目(H20037)

摘　　要：目的分析种植体支持修复下颌第一磨牙时,不同直径和数目种植体对种植体骨界面应力分布的影响。方法建立3种不同直径的单种植体和1种双种植体支持修复下颌第一磨牙的模型,运用三维有限元法,分析种植体骨界面应力分布。结果单种植体设计模型,随直径的增大,种植体及周围骨vonMises应力值减小。双种植体设计模型,种植体及周围骨vonMises应力值小于单种植体。结论双种植体和宽直径单种植体支持修复下颌第一磨牙的设计有利于种植体及周围骨应力的分布。Objective To study the influence on stress distribution at implant-bone interface of mandibular first molar implant-supported with different diameters and numbers of implants. Methods Four models of mandibular first molar of Single or double implantsupported with different diameters were constructed with three-dimensional finite element method. The stresses at implant-bone interface were analysed in these models . Results The stresses in model D were slightly less when compared with model A, B and C. In the meantime, the value of stress was lower with increasing diameter implants. However, the differences of these values were not statistically significant. Conclusion The design of wider diameter and double-supported implants seems favorable to stress distribution and can benefit the retention and support of implants.

关 键 词：三维有限元 种植体 应力分布 

分 类 号：R783.4[医药卫生—口腔医学]