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使用EverStick桩和Sharonlay修复的根管治疗单根前磨牙的应力分布：有限元分析

Stress distribution in endodontically treated single-rooted premolars restored with everstick post and sharonlay: A finite element analysis.

作者信息

Bhavsar Bhavika A, Patnaik Tulika, Sharma Pranjely, Vijo Mary, Abdulla Ashfaque, Hussain Anju S

机构信息

Department of Conservative Dentistry and Endodontics, RKDF Dental College and Research Centre, Bhopal, Madhya Pradesh, India.

出版信息

Dent Res J (Isfahan). 2023 Jul 25;20:78. eCollection 2023.

PMID:37674575
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10478838/
Abstract

BACKGROUND

The objective of the study is to compare stress distribution in a tooth restored with everstick post and sharonlay by means of three-dimensional finite element analysis (3D-FEA).

MATERIALS AND METHODS

An experimental original study was carried out in which two 3D-FEA models were constructed: (1) tooth restored with everstick post and metal ceramic crown and (2) tooth restored with sharonlay. The material properties were assigned and a force of 100N, 200N, 300N, and 400N was applied to the centric stop of the occlusal surface in centric occlusion at a 45° inclination in a linguolabial direction to the long axis of the tooth. Analysis was run and the stress distribution pattern was studied. As all stress distribution analysis was performed with the Ansys 11.0 software (Inventor AutoCAD 2010; Autodesk) program, the significance of value or tests for statistical analysis was considered.

RESULTS

Sharonlay showed more total deformation, larger stress, and strain concentration than that of everstick post.

CONCLUSION

Tooth restored with sharonlay showed greater chances of deformation than everstick post. It also showed maximum strain concentration near the apical portion of the remaining tooth structure and more stress in the cervical third of the postsystem than everstick post.

摘要

背景

本研究的目的是通过三维有限元分析（3D-FEA）比较使用everstick桩和Sharonlay修复的牙齿中的应力分布。

材料与方法

进行了一项实验性原创研究，构建了两个3D-FEA模型：（1）使用everstick桩和金属陶瓷冠修复的牙齿，以及（2）使用Sharonlay修复的牙齿。赋予材料属性，并在正中咬合时，以与牙齿长轴呈舌唇向45°倾斜的方向，对咬合面的正中止点施加100N、200N、300N和400N的力。进行分析并研究应力分布模式。由于所有应力分布分析均使用Ansys 11.0软件（Inventor AutoCAD 2010；Autodesk）程序进行，因此考虑了 值或统计分析检验的显著性。

结果

与everstick桩相比，Sharonlay显示出更多的总变形、更大的应力和应变集中。

结论

使用Sharonlay修复的牙齿比everstick桩显示出更大的变形机会。它还显示在剩余牙齿结构根尖部分附近有最大的应变集中，并且在桩系统的颈部三分之一处比everstick桩有更多的应力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0749/10478838/79e167e5e8aa/DRJ-20-78-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0749/10478838/ff8300130543/DRJ-20-78-g001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0749/10478838/726ba3f2a37e/DRJ-20-78-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0749/10478838/7ffccef24a7f/DRJ-20-78-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0749/10478838/2820ee52ae16/DRJ-20-78-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0749/10478838/4f219bcb145a/DRJ-20-78-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0749/10478838/86c623f6121a/DRJ-20-78-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0749/10478838/e1a8b9771ab2/DRJ-20-78-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0749/10478838/7302a9103dbe/DRJ-20-78-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0749/10478838/79e167e5e8aa/DRJ-20-78-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0749/10478838/ff8300130543/DRJ-20-78-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0749/10478838/530cabec4afa/DRJ-20-78-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0749/10478838/726ba3f2a37e/DRJ-20-78-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0749/10478838/7ffccef24a7f/DRJ-20-78-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0749/10478838/2820ee52ae16/DRJ-20-78-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0749/10478838/4f219bcb145a/DRJ-20-78-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0749/10478838/86c623f6121a/DRJ-20-78-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0749/10478838/e1a8b9771ab2/DRJ-20-78-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0749/10478838/7302a9103dbe/DRJ-20-78-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0749/10478838/79e167e5e8aa/DRJ-20-78-g010.jpg

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本文引用的文献

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Int J Clin Pediatr Dent. 2021 Sep-Oct;14(5):689-692. doi: 10.5005/jp-journals-10005-2035.
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A Comparative Analysis of Fracture Resistance and Mode of Failure of Endodontically Treated Teeth Restored Using Different Fiber Posts: An Study.使用不同纤维桩修复的根管治疗后牙齿的抗折性和失效模式的比较分析：一项研究。
J Contemp Dent Pract. 2019 Oct 1;20(10):1195-1199.
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Fracture resistance of endodontically treated single rooted premolars restored with Sharonlay: An in vitro study.
使用Sharonlay修复的根管治疗单根前磨牙的抗折性：一项体外研究。
J Conserv Dent. 2016 May-Jun;19(3):270-3. doi: 10.4103/0972-0707.181946.
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SHARONLAY - A new onlay design for endodontically treated premolar.沙伦·莱伊——一种用于牙髓治疗后前磨牙的新型覆盖体设计。
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