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2毫米厚的口腔保护器对有无带环冠修复的上颌乳中切牙有效性的比较：三维有限元分析

Comparison of Effectiveness of 2 mm Thick Mouthguard on Primary Central Incisor with and without Strip Crown Restoration: A Three-dimensional Finite Element Analysis.

作者信息

Mridul M, Chaudhary Kalpana, Khanduri Nitin, Sawkar Deepashree, Deole Kedar

机构信息

Department of Pediatric and Preventive Dentistry, Seema Dental College and Hospital, Rishikesh, Uttarakhand, India.

Department of Prosthodontics and Crown and Bridge, Seema Dental College and Hospital, Rishikesh, Uttarakhand, India.

出版信息

Int J Clin Pediatr Dent. 2025 Apr;18(4):363-367. doi: 10.5005/jp-journals-10005-3104. Epub 2025 May 19.

DOI:10.5005/jp-journals-10005-3104
PMID:40469824
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12131053/
Abstract

AIM

The aim of this study was to evaluate the effect of impact stress on a primary central incisor with and without a strip crown and mouthguard using finite element analysis (FEA).

METHODOLOGY

Four three-dimensional (3D) FEA models of a normal primary central incisor and strip crown with and without a 2 mm ethylene vinyl acetate (EVA) mouthguard were obtained from a cone-beam computed tomography (CBCT) scan of a 3-year-old child. Boundary conditions were defined. Impact analysis was carried out in Ansys Inc. software.

RESULTS

Results were obtained through von Mises analysis. Such analyses involve the process of color mapping to determine the distribution of stress. Normal primary maxillary central incisors without mouthguards and primary central incisors with strip crowns reported higher stresses compared to models with mouthguards.

CONCLUSION

A 2 mm custom-fitted EVA mouthguard was effective in mitigating impact stress in the dentition of 3-5-year-old children. Therefore, the use of mouthguards should be encouraged in clinical practice, even for small children.

HOW TO CITE THIS ARTICLE

Mridul M, Chaudhary K, Khanduri N, . Comparison of Effectiveness of 2 mm Thick Mouthguard on Primary Central Incisor with and without Strip Crown Restoration: A Three-dimensional Finite Element Analysis. Int J Clin Pediatr Dent 2025;18(4):363-367.

摘要

目的

本研究旨在通过有限元分析（FEA）评估冲击应力对有无带环冠和护齿器的乳中切牙的影响。

方法

从一名3岁儿童的锥形束计算机断层扫描（CBCT）中获得了正常乳中切牙和带环冠且有或没有2毫米乙烯-醋酸乙烯酯（EVA）护齿器的四个三维（3D）有限元分析模型。定义了边界条件。在Ansys Inc.软件中进行了冲击分析。

结果

通过冯·米塞斯分析获得了结果。此类分析涉及颜色映射过程以确定应力分布。与使用护齿器的模型相比，未使用护齿器的正常上颌乳中切牙和带有带环冠的乳中切牙承受的应力更高。

结论

一个2毫米定制的EVA护齿器在减轻3至5岁儿童牙列中的冲击应力方面是有效的。因此，即使对于幼儿，在临床实践中也应鼓励使用护齿器。

如何引用本文

Mridul M, Chaudhary K, Khanduri N, . 2毫米厚护齿器对有无带环冠修复的乳中切牙有效性的比较：三维有限元分析。《国际临床儿科牙科学杂志》2025；18(4):363 - 367。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d7d/12131053/6f403a9f5019/ijcpd-18-4-363-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d7d/12131053/2946c02fa01d/ijcpd-18-4-363-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d7d/12131053/38fc25f4a57c/ijcpd-18-4-363-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d7d/12131053/95b36d607546/ijcpd-18-4-363-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d7d/12131053/410a812ce968/ijcpd-18-4-363-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d7d/12131053/c3094a7ed935/ijcpd-18-4-363-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d7d/12131053/9b0329d4c9c9/ijcpd-18-4-363-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d7d/12131053/19d7e00d3595/ijcpd-18-4-363-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d7d/12131053/6f403a9f5019/ijcpd-18-4-363-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d7d/12131053/2946c02fa01d/ijcpd-18-4-363-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d7d/12131053/38fc25f4a57c/ijcpd-18-4-363-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d7d/12131053/95b36d607546/ijcpd-18-4-363-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d7d/12131053/410a812ce968/ijcpd-18-4-363-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d7d/12131053/c3094a7ed935/ijcpd-18-4-363-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d7d/12131053/9b0329d4c9c9/ijcpd-18-4-363-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d7d/12131053/19d7e00d3595/ijcpd-18-4-363-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d7d/12131053/6f403a9f5019/ijcpd-18-4-363-g008.jpg

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