Three-dimensional finite element analysis of resin-dentin interfaces bonded with total etching and self-etching systems under static tensile load

Yanpeng ZHU; Wei HUANG; Zhaoxia CHEN; Yan LI; Yu XIONG

doi:10.16016/j.1000-5404.202102099

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Three-dimensional finite element analysis of resin-dentin interfaces bonded with total etching and self-etching systems under static tensile load

Biomedical Engineering | 更新时间：2026-01-09

- Three-dimensional finite element analysis of resin-dentin interfaces bonded with total etching and self-etching systems under static tensile load
- Journal of Third Military Medical University Vol. 43, Issue 16, Pages: 1593-1597(2021)
- 作者机构：
  
  400038 重庆，陆军军医大学(第三军医大学)第一附属医院口腔科
- 作者简介：
- 基金信息：
  
  the General Program of National Natural Science Foundation of China(81671022);the Cultivation Program of Clinical Technology Innovation of Army Medical University(CX2019LC106)
- DOI：10.16016/j.1000-5404.202102099
  CLC： R312;R322.41;R783.1
- Received：21 February 2021，
  
  Revised：2021-03-18，
  
  Published：30 August 2021
- 稿件说明：
移动端阅览
Yanpeng ZHU, Wei HUANG, Zhaoxia CHEN, et al. Three-dimensional finite element analysis of resin-dentin interfaces bonded with total etching and self-etching systems under static tensile load[J]. Journal of Third Military Medical University, 2021, 43(16): 1593-1597.
DOI：

Yanpeng ZHU, Wei HUANG, Zhaoxia CHEN, et al. Three-dimensional finite element analysis of resin-dentin interfaces bonded with total etching and self-etching systems under static tensile load[J]. Journal of Third Military Medical University, 2021, 43(16): 1593-1597. DOI： 10.16016/j.1000-5404.202102099.

摘要

目的

分析静态载荷下全酸蚀和自酸蚀牙本质粘接界面结构对其应力分布的影响，以了解应力载荷下两种粘接界面的功能状态。

方法

依据全酸蚀和自酸蚀粘接界面的微观形貌特点构建理想化三维有限元模型，设定边界条件及力学参数后加载20 MPa静态拉伸载荷，比较两种粘接界面的应力分布特点及各结构单元的应力集中因子。

结果

静态载荷下粘接界面各结构成分承受不同程度的拉伸应力，应力集中主要出现在不同结构成分交界面，全酸蚀粘接界面中部分脱矿牙本质的应力集中因子最大(2.91)，而自酸蚀粘接界面中正常牙本质的应力集中因子最高(2.52)。自酸蚀粘接界面中的应力水平(50.32 MPa)低于全酸蚀粘接界面(58.27 MPa)。

结论

基于本研究构建的两种粘接界面模型，自酸蚀粘接界面较全酸蚀粘接界面有更好的力学稳定性。

Abstract

Objective

To analyze the effect of total etching and self-etching adhesive systems on resin-dentin interfaces and stress distribution under static tensile loading in order to understand the function of 2 interfaces under static loading.

Methods

Two idealized micro-scaled three-dimensional finite element models were constructed according to the micromorphological characteristics of the total etching and self-etching adhesive system bonded dentin interfaces. The stress distribution of the 2 interfaces was analyzed under a static tensile load of 20 MPa

as well as stress concentration factors of each structural components were calculated.

Results

The structural components of both bonded interfaces were subjected to tensile stress under static tensile loading

as the stress was concentrated predominantly at the junctions of different structural components. The highest stress concentration factor was found in the partially demineralized dentin in the total etching bonded interface (2.91)

and the factor was 2.52 in the intact dentin in the self-etching bonded interface. The stress was lower in the self-etching bonded interface than the total etching bonded interface (50.32

58.27 MPa).

Conclusion

Based on the 2 micro-scaled interfacial models constructed in this study

the mechanical stability of self-etching bonded interface is much better than that of the total etching bonded interface.

关键词

Keywords

references

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