Stress analysis during jaw movement based on vivo computed tomography images from patients with temporomandibular disorders

H. Y. Cheng, P. W. Peng, Y. J. Lin, S. T. Chang, Y. N. Pan, S. C. Lee, K. L. Ou, W. C. Hsu

研究成果: 雜誌貢獻文章同行評審

18 引文 斯高帕斯(Scopus)

摘要

The purpose of this study is to develop three-dimensional (3D) finite element models of temporomandibular joints (TMJs) and to investigate stress distributions. To determine the causes of temporomandibular disorders (TMDs), the magnitude and location of the maximum stresses under physiological loading must be considered. Stress analysis TMD models were reconstructed from computed tomography (CT) data. Several studies have investigated finite element TMJ models, but few have used a bilateral mandible model that includes jaw closing and maximum opening. In this study, the authors defined an asymmetry index for the different stress values on each side joint; this index has not yet been investigated. According to clinical observation, one joint affects the other side joint during mastication. Three symptom-free volunteers and three symptomatic patients were selected as the control group (CG) and TMD group (TG), respectively. For the TG, data analysis indicated that the condyle was asymmetrical during jaw closing, while both the condyle and disc were slightly asymmetrical during jaw opening. The maximum stresses did not significantly differ between the CG and TG for either closing or opening of the jaw. The results of this study have a potential clinical benefit in terms of proving superior biomechanical behaviour.
原文英語
頁(從 - 到)386-392
頁數7
期刊International Journal of Oral and Maxillofacial Surgery
42
發行號3
DOIs
出版狀態已發佈 - 三月 2013

ASJC Scopus subject areas

  • 手術
  • 口腔外科
  • 耳鼻咽喉科

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