The relationship between maxillofacial morphology and biomechanical environment in the TMJ during central clenching: A measurement and finite element analysis

IF 2 3区医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of Stomatology Oral and Maxillofacial Surgery Pub Date : 2025-10-01 DOI:10.1016/j.jormas.2025.102420

Annan Li , Bingmei Shao , Zhan Liu

{"title":"The relationship between maxillofacial morphology and biomechanical environment in the TMJ during central clenching: A measurement and finite element analysis","authors":"Annan Li , Bingmei Shao , Zhan Liu","doi":"10.1016/j.jormas.2025.102420","DOIUrl":null,"url":null,"abstract":"<div><h3>Background</h3><div>The relationship between maxillofacial morphology and temporomandibular disorders (TMD) is unclear. The stress distribution in temporomandibular joints (TMJs) was a key feature in understanding the pathogenesis of TMD.</div></div><div><h3>Methods</h3><div>Twenty-three subjects were scanned using MRI and CT in this study. The parameters of the subjects were measured. Finite element (FE) analyses were also conducted to evaluate the stress distribution in the TMJs. Paired correlations were then performed between the cephalometric parameters and FE results for the TMJs.</div></div><div><h3>Results</h3><div><span>The results showed the anterior cranial base and posterior </span>face<span> height tended to increase alongside a clockwise rotated mandible. A larger posterior ramal height and mandibular length, and clockwise rotated mandible with a forward position were favorable for maintaining the disc in an optimal position.</span></div></div><div><h3>Conclusions</h3><div>The morphology parameters are statistically related to the stress distributions in the TMJs. Even small changes in maxillofacial morphology could result in abnormal stress distributions in TMJs, potentially leading to TMD.</div></div>","PeriodicalId":55993,"journal":{"name":"Journal of Stomatology Oral and Maxillofacial Surgery","volume":"126 5","pages":"Article 102420"},"PeriodicalIF":2.0000,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Stomatology Oral and Maxillofacial Surgery","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S246878552500206X","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"DENTISTRY, ORAL SURGERY & MEDICINE","Score":null,"Total":0}

引用次数: 0

Abstract

Background

The relationship between maxillofacial morphology and temporomandibular disorders (TMD) is unclear. The stress distribution in temporomandibular joints (TMJs) was a key feature in understanding the pathogenesis of TMD.

Methods

Twenty-three subjects were scanned using MRI and CT in this study. The parameters of the subjects were measured. Finite element (FE) analyses were also conducted to evaluate the stress distribution in the TMJs. Paired correlations were then performed between the cephalometric parameters and FE results for the TMJs.

Results

The results showed the anterior cranial base and posterior face height tended to increase alongside a clockwise rotated mandible. A larger posterior ramal height and mandibular length, and clockwise rotated mandible with a forward position were favorable for maintaining the disc in an optimal position.

Conclusions

The morphology parameters are statistically related to the stress distributions in the TMJs. Even small changes in maxillofacial morphology could result in abnormal stress distributions in TMJs, potentially leading to TMD.

查看原文本刊更多论文

中央握紧时颌面形态与颞下颌关节生物力学环境的关系：测量与有限元分析。

背景：颌面部形态学与颞下颌疾病（TMD）的关系尚不清楚。颞下颌关节（TMJs）的应力分布是了解TMD发病机制的关键特征。方法：对23例受试者进行MRI和CT扫描。测量了受试者的各项参数。有限元分析评估了tmj内的应力分布。然后在颅面测量参数和颞下颌关节FE结果之间进行配对相关性。结果：沿顺时针方向旋转下颌骨，前颅底和后面部高度有增加的趋势。较大的后支高度和下颌骨长度，顺时针旋转下颌骨向前位有利于维持椎间盘在最佳位置。结论：形态学参数与颞下颌关节应力分布有统计学意义。即使颌面部形态学的微小变化也可能导致颞下颌关节的应力分布异常，从而可能导致颞下颌关节病。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊