Biomechanical properties of the finite element model of temporomandibular joint

doi:10.3969/j.issn.2095-4344.0257

Abstract

Abstract:

BACKGROUND: Structure of temporomandibular joint is irregular and complex, so it is difficult to obtain CT data and three-dimensional (3D) reconstruction. Constructing a reliable 3D model simulating temporomandibular joint is of great significance for the studies on temporomandibular joint disturbance.
OBJECTIVE: To establish the 3D model of soft and hard tissues of temporomandibular joint based on spiral CT scanning data.
METHODS: A man with normal facial structure and normal occlusion was selected. The 3D finite element model of temporomandibular joint was established based on CT data of temporomandibular joint. According to the actual human temporomandibular joint movement, the finite element analysis was conducted by adjusting the function parameters.
RESULTS AND CONCLUSION: (1) Numerical simulation results showed that when the lateral side of mandible in movement, the stress distribution of contralateral and ipsilateral articular discs was different. There was high stress distribution on the ipsilateral articular disc, which concentrated on the lateral side/posterior part of articular disc. Because the inferior wall of temporal bone wall joints bears the strong compression of temporomandibular joint, the lateral condyle of ipsilateral articular disc distorted, thus perforation or damage easily occurred. (2) The movement of lateral temporomandibular joint is analyzed on the established model by a finite element analysis, and the stress distribution is obtained, which can provide theoretical basis for treatment of condylar fracture and temporomandibular joint replacement.

中国组织工程研究杂志出版内容重点：组织构建；骨细胞；软骨细胞；细胞培养；成纤维细胞；血管内皮细胞；骨质疏松；组织工程

Key words: Temporomandibular Joint, Biomechanics, Finite Element Analysis, Tissue Engineering

CLC Number:

R318

Zhan Xiang. Biomechanical properties of the finite element model of temporomandibular joint[J]. Chinese Journal of Tissue Engineering Research, 2018, 22(20): 3172-3177.

Figures/Tables 2

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