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contributor authorMa, He-Di
contributor authorWang, Quan-Yi
contributor authorTeng, Hai-Dong
contributor authorZheng, Ting-Hui
contributor authorLiu, Zhan
date accessioned2022-02-04T22:09:33Z
date available2022-02-04T22:09:33Z
date copyright9/8/2020 12:00:00 AM
date issued2020
identifier issn0148-0731
identifier otherbio_142_12_121010.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4274996
description abstractThe purpose of this study was to investigate how sagittal split ramus osteotomy (SSRO) and Le Fort 1 osteotomy affected the stress distribution of the temporomandibular joint (TMJ) during an anterior teeth bite using the three-dimensional (3D) finite element (FE) method. Fourteen orthognathic surgery patients were examined with mandibular prognathism, facial asymmetry, and mandibular retraction. They underwent Le Fort 1 osteotomy in conjunction with SSRO. In addition, ten asymptomatic subjects were recruited as the control group. The 3D models of the mandible, disc, and maxilla were reconstructed according to cone-beam computed tomography (CBCT). Contact was used to simulate the interaction of the disc-condyle, disc-temporal bone, and upper-lower dentition. Muscle forces and boundary conditions corresponding to the anterior occlusions were applied on the models. The stresses on the articular disc and condyle in the pre-operative group were significantly higher than normal. The contact stress and minimum principal stress in TMJ for patients with temporomandibular disorder (TMD) were abnormally higher. The peak stresses of the TMJ of the patients under anterior occlusions decreased after bimaxillary osteotomy. No postoperative TMD symptoms were found. Maxillofacial deformity led to excessive stress on the TMJ. Bimaxillary osteotomy can partially improve the stress distributions of the TMJ and relieve the symptoms of TMD.
publisherThe American Society of Mechanical Engineers (ASME)
titleEvaluation of the Therapeutic Effect of Bi-Maxillary Osteotomy Using the Stress Distribution on the Temporomandibular Joint When Doing Anterior Teeth Occlusion
typeJournal Paper
journal volume142
journal issue12
journal titleJournal of Biomechanical Engineering
identifier doi10.1115/1.4047425
journal fristpage0121010-1
journal lastpage0121010-5
page5
treeJournal of Biomechanical Engineering:;2020:;volume( 142 ):;issue: 012
contenttypeFulltext


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