Mechanical analysis on individualized finite element of temporal-mandibular joint under overlarge jaw opening status
Identifieur interne : 005E73 ( Ncbi/Curation ); précédent : 005E72; suivant : 005E74Mechanical analysis on individualized finite element of temporal-mandibular joint under overlarge jaw opening status
Auteurs : Mingxu Sun [République populaire de Chine] ; Jianjun Yang [République populaire de Chine] ; Ruizhi Zhou [République populaire de Chine] ; Ningyi Li [République populaire de Chine] ; Junnan Xia [République populaire de Chine] ; Fang Gu [République populaire de Chine]Source :
- International Journal of Clinical and Experimental Medicine [ 1940-5901 ] ; 2015.
Abstract
Url:
PubMed: 26309558
PubMed Central: 4538150
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<front><div type="abstract" xml:lang="en"><p><italic>Background:</italic>
Analyze the stress status of temporal-mandibular joint (TMJ) of a healthy volunteer under the overlarge jaw opening status through the finite element method, with the purpose of clarifying the loading features of each structure in the joint area, and achieving further understanding of the pathogenesis of the temporomandibular disorders (TMD). <italic>Methods:</italic>
Collect the CBCT and MRI data of a volunteer respectively under the maximum jaw opening, establish the finite element model (FEM) of TMJ under the maximum jaw opening status through a series of software, image segmentation, rectification, meshing, material evaluation and other related processing, simulate the mechanical environment of this joint area under this status, and analyze the stress status of the articular disc, condyle cartilage, and condyle process. <italic>Results:</italic>
Based on CT and MRI image data, build 3D model and FEM of TMJ, fully simulate the mechanical environment under the large jaw opening status, and calculate the stress value of the articular disc, condyle process and condylar cartilage. <italic>Conclusions:</italic>
This research result reminds us that the normal people’s articular disc are easy to generate stress concentration under large jaw opening, but its stress is far less than the one under the tight biting status. Perhaps the TMJ symptom induced under the large jaw opening status is mainly caused by the displacement of the articular disc. Under the large jaw opening status, the condylar cartilage plays a vital role in dispersing the stress. This method can be applied for carrying out individualized mechanical analysis on the patients with TMD.</p>
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