The three-dimension finite element analysis on stress of different length post of posterior tooth on post-core crown

FU Gang; et al

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The three-dimension finite element analysis on stress of different length post of posterior tooth on post-core crown

更新时间：2024-01-17

- The three-dimension finite element analysis on stress of different length post of posterior tooth on post-core crown
- Journal of Chongqing Medical University Issue 4, Pages: 579-581(2006)
- 作者机构：
  
  1. 重庆医科大学附属口腔医院修复科
  2. 重庆医科大学附属口腔医院修复科,重庆,400015
- 作者简介：
- 基金信息：
- DOI：
  CLC： R783.1
- Published：2006，
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[1]付钢,王璐,夏熹.不同桩长对后牙核桩冠牙本质应力的三维有元分析[J].重庆医科大学学报,2006(04):579-581.

FU Gang, et al. The three-dimension finite element analysis on stress of different length post of posterior tooth on post-core crown. [J]. Journal of Chongqing Medical University (4):579-581(2006)
[1]付钢,王璐,夏熹.不同桩长对后牙核桩冠牙本质应力的三维有元分析[J].重庆医科大学学报,2006(04):579-581. DOI：

FU Gang, et al. The three-dimension finite element analysis on stress of different length post of posterior tooth on post-core crown. [J]. Journal of Chongqing Medical University (4):579-581(2006) DOI：

摘要

目的:通过比较不同长度桩的后牙桩核对牙本质应力分布的影响

以探讨后牙桩核修复时合理的桩的长度

从而指导临床进行合理设计。方法:通过磨片法结合数码相机获取断层图片的建模方法

建立了上颌第一磨牙近中腭尖缺损的桩核冠有限元模型

在其上进行加载

分析牙本质的应力大小和分布。结果:用中熔合金桩核修复的上颌第一磨牙近中腭尖缺损的烤瓷冠修复体

在桩长取其腭根根长的1/2

2/3两种不同长度的情况下

其剩余牙本质的Von mises应力

最大主应力

最小主应力的峰值均相同。且牙本质应力分布模式二者也完全一样。结论:中熔合金桩核修复的上颌第一磨牙近中腭尖缺损的烤瓷冠修复体

桩长度在其腭根根长1/2-2/3之间变化时

对其剩余牙本质应力及应力分部模式不产生任何影响。

Abstract

Objective: To compare influence of residual dentin stress on condition of different post length of posterior teeth post-core

to discover reasonable post length of posterior teeth post-core

in order to instruct clinic rational design.Methods:Models were created by abrasive method and way which pictures were acqiured with digital camera.To generate three-dimensional models of maxillary firster molar which is short in medial palatal cusp restored with post-core crown.Then analyse magnitude and distribution of model residual dentin stress by the three-dimension finite element analysis.Result:When maxillary firster molar which is short in medial palatal cusp restored with middle fusion metal post-core and porcelain fused mental crown

on condition of 1/2 post length and2/3 post lengths

it has the same magnitude of Von mises stress? most main stress ? least main stress and the same stress distribution on residual dentin.Conclusion:When maxillary firster molar which is short in medial palatal cusp restored with middle fusion metal post-core and porcelain fused mental crown

on condition of 1/2 post length and2/3 post lengths

it has no infulence in magnitude and distribution of stress of residual dentin.

关键词

三维有限元应力桩核冠

Keywords

Three-dimension finite elementStresspost-core crown

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Related Institution

重庆医科大学附属口腔医院正畸科

Department of Prosthodontics,the Affilliated Stomatology Hospital,Chongqing Medical University

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