{"title":"运动冲击对颞下颌系统损伤的影响：额部冲击。","authors":"Annan Li, Bingmei Shao, Zhan Liu","doi":"10.1111/edt.13055","DOIUrl":null,"url":null,"abstract":"<p><strong>Objective: </strong>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.</p><p><strong>Design: </strong>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.</p><p><strong>Methods: </strong>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.</p><p><strong>Results: </strong>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.</p><p><strong>Conclusion: </strong>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.</p>","PeriodicalId":55180,"journal":{"name":"Dental Traumatology","volume":" ","pages":""},"PeriodicalIF":2.3000,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The Influence of Sport Impacts on Injuries of the Temporomandibular System: Frontal Impacts.\",\"authors\":\"Annan Li, Bingmei Shao, Zhan Liu\",\"doi\":\"10.1111/edt.13055\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Objective: </strong>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.</p><p><strong>Design: </strong>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.</p><p><strong>Methods: </strong>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.</p><p><strong>Results: </strong>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.</p><p><strong>Conclusion: </strong>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.</p>\",\"PeriodicalId\":55180,\"journal\":{\"name\":\"Dental Traumatology\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2025-04-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Dental Traumatology\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://doi.org/10.1111/edt.13055\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Dental Traumatology","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1111/edt.13055","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}
The Influence of Sport Impacts on Injuries of the Temporomandibular System: Frontal Impacts.
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.
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.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
