Three dimensional finite element stress analysis of the post-core crown restored posterior stump of teeth with different adhesives

MENG Lin; et al

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Three dimensional finite element stress analysis of the post-core crown restored posterior stump of teeth with different adhesives

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- Three dimensional finite element stress analysis of the post-core crown restored posterior stump of teeth with different adhesives
- Journal of Chongqing Medical University Issue 9, Pages: 1124-1126(2008)
- 作者机构：
  
  重庆医科大学附属口腔医院修复科
- 作者简介：
- 基金信息：
- DOI：
  CLC： R783.3
- Published：2008，
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[1]孟琳,付钢,夏熹,李苏伶,王璐.不同粘接材料对后牙残根核桩冠修复后三维有限元应力分析[J].重庆医科大学学报,2008(09):1124-1126+1129.

MENG Lin, et al. Three dimensional finite element stress analysis of the post-core crown restored posterior stump of teeth with different adhesives. [J]. Journal of Chongqing Medical University (9):1124-1126(2008)
[1]孟琳,付钢,夏熹,李苏伶,王璐.不同粘接材料对后牙残根核桩冠修复后三维有限元应力分析[J].重庆医科大学学报,2008(09):1124-1126+1129. DOI：

MENG Lin, et al. Three dimensional finite element stress analysis of the post-core crown restored posterior stump of teeth with different adhesives. [J]. Journal of Chongqing Medical University (9):1124-1126(2008) DOI：

摘要

目的:采用三维有限元方法

比较不同粘接剂对后牙残根桩核冠修复体剩余牙本质和粘接界面上应力大小及其分布的影响

探讨后牙残根桩核冠修复时合理选用桩核粘接材料。方法:采用CT扫描

Mimics软件及Abaqus软件建立上颌第一磨牙桩核冠的三维有限元模型。其模型包括桩核、冠、牙根、牙周膜、牙槽骨和粘接剂。根据粘接剂的不同

将上述上颌第一磨牙桩核冠的三维有限元模型分为不同实验组。在模型咬牙合面选取3个载荷点

分别施加80N的加载力值

计算各实验组中剩余牙本质和粘接剂粘接界面上的Von mises应力、最大主应力、剪切应力的应力峰值及其上应力分布方式。结果:在不同粘接剂实验组中

复合树脂粘接剂组粘接剂粘接界面上的各项应力峰值均要低于磷酸锌粘接剂组者。结论:在本实验研究条件下

不同粘接剂对后牙残根桩核冠修复体剩余牙本质和粘接剂界面上的应力峰值和应力分布有影响。

Abstract

Objective:To compare the effects on the size and distribution of stress of different adhesives on post-core crown restored posterior stump of teeth dentin

to discover reasonable post-crown adhesive material of posterior stump of teeth post-core crown

by three dimensional finite element analyses. Methods:Establish three dimensional finite element models of maxillary first molar post-core crown by CT scanning

Mimics and Abaqus software

which include post core

crown

tooth root

pericementum

alveolar bone and adhesive material. Divide above models into experimental and control group according to the relative adhesive material. Choose three load spots on the occlusal surface of this model

and exert 80N loading strength on each. Then calculate the peak value and distribution mode of Von mises stress

max-principle stress and shear stress. Results:In the different adhesive material experimental groups

the peak value of the stress on the dentin of the composite resin group was lower than those in zinc phosphate groups. Conclusion:On the condition of this experiment

different adhesives have different effects on the peak value and distribution of the stress on the post-core crown restored posterior stump of teeth dentin.

关键词

三维有限元应力桩核冠

Keywords

Three dimensional finite elementStresspost-core crown

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Department of Prosthondontics,the Affiliated Stomatology Hospital,Chongqing Medical University

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