临床口腔医学杂志2016，Vol.32Issue(5)：297-300,4.DOI:10.3969/j.issn.1003-1634.2016.05.015
窄径植体下颌种植覆盖义齿的优化设计
The optimal selection of mandibular implant-supported overdenture with narrow diameter implant
王立刚1
作者信息
- 1. 解放军第413医院口腔科 浙江 舟山 316000
- 折叠
摘要
Abstract
Objective:The aim of this study was to evaluate the stress distribution of the narrow diameter implant-supported overdenture in mandible induced by the number of the implants and the type of the attachment, through finite element analysis. Method:The CT data of mandible and denture from a patient were collected. Then reverse engineer softwares were used to construct a 3D finite element model of the complete narrow diameter implant-supported overdenture in mandible, which include cortical bone in mandible, cancellous bone, different types of attachment (bar attachment B;ball attachment R;magnetic attachment M)and overdenture. By definition the contact relationship of different parts of the model and simulate vertical occlusion of the right posterior teeth, to investigate the stress distribution of the narrow diameter planting overdenture in mandible induced by the number of the implants and the type of the attachment. Result:The peak stress in peri-implant of the even implants was obviously lower than the odd implants. The peak stress in peri-implant of the bar attachment was low, followed by the ball attachment and the magnetic attachment was the highest. The peak stress in peri-implant of the bar attachment was inversely proportional to the number of the implants. The peak stress in peri-implant of the magnetic attachment was proportinal to the number of the implants. Conclusion:The number of the implants and the type of the attachment have a significant effect on the stress distribution in mandible. It is advised that the bar attachment design of the even number implants has the priority in clinical practice, and the next choice is the ball attachment implant design.关键词
窄径种植体/下颌种植覆盖义齿/附着体/咬合运动/应力Key words
Narrow diameter dental implant/Mandibular implant-supported overdenture/Attachment/Occlusion/Stress分类
医药卫生引用本文复制引用
王立刚..窄径植体下颌种植覆盖义齿的优化设计[J].临床口腔医学杂志,2016,32(5):297-300,4.
