The Influence of Sport Impacts on Injuries of the Temporomandibular System: Frontal Impacts.

IF 2.3 3区医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE

Dental Traumatology Pub Date : 2025-04-30 DOI:10.1111/edt.13055

Annan Li, Bingmei Shao, Zhan Liu

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引用次数: 0

Abstract

Objective: The orofacial injuries (temporomandibular joint (TMJ) injuries, mandible fractures, etc.) represent a high incidence in sports medicine. But the mechanism of injuries caused by sport impacts was poorly studied. This study aimed to fill this gap.

Design: Different frontal impacts were applied to the finite element model. The motions and biomechanical responses of the joint and mandible were analyzed and compared with active open-closing mouth movement in order to evaluate injury causes.

Methods: Firstly, the maxillofacial morphology and open-closing motion were captured. Then an improved FE maxillofacial model for dynamic analysis was established for impact and mouth open-closing simulations.

Results: The rotation degrees of the mandible and the stress level of the TMJ increased as the impacts got greater. The disc sustained squeeze and the capsule sustained stretch. The mandibular body and ramus sustained greater stretch under impacts over 2000 N.

Conclusion: It indicated that the injuries of the TMJ were primarily from excessive squeezing on the disc and stretching on the capsule, caused by excessive displacement of the condyle. The mandibular body and ramus were at great risk of fracture.

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运动冲击对颞下颌系统损伤的影响：额部冲击。

目的：在运动医学中，口面部损伤（颞下颌关节损伤、下颌骨骨折等）的发生率较高。但对运动冲击损伤的机制研究较少。这项研究旨在填补这一空白。设计：在有限元模型中应用不同的正面碰撞。分析关节和下颌骨的运动和生物力学反应，并与主动开合口运动进行比较，以评估损伤原因。方法：首先采集颌面部形态和开合运动；在此基础上，建立了改进的有限元颌面动力学分析模型，进行了碰撞和开闭仿真。结果：随着冲击的增大，下颌骨的旋转度和颞下颌关节的应力水平增加。椎间盘持续挤压，囊膜持续拉伸。下颌骨体和支在2000牛顿以上的冲击下承受更大的拉伸。结论：颞下颌关节损伤主要是由髁突过度移位引起的椎间盘过度挤压和关节囊过度拉伸引起的。下颌骨体支骨折的危险较大。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Dental Traumatology 医学-牙科与口腔外科

CiteScore

6.40

自引率

32.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Dental Traumatology is an international journal that aims to convey scientific and clinical progress in all areas related to adult and pediatric dental traumatology. This includes the following topics: - Epidemiology, Social Aspects, Education, Diagnostics - Esthetics / Prosthetics/ Restorative - Evidence Based Traumatology & Study Design - Oral & Maxillofacial Surgery/Transplant/Implant - Pediatrics and Orthodontics - Prevention and Sports Dentistry - Endodontics and Periodontal Aspects The journal"s aim is to promote communication among clinicians, educators, researchers, and others interested in the field of dental traumatology.