Stresses at the cervical lesion of maxillary premolar - A finite element investigation

H. E. Lee, C. L. Lin, C. H. Wang*, C. H. Cheng, C. H. Chang

*此作品的通信作者

研究成果: 期刊稿件文章同行評審

85 引文 斯高帕斯(Scopus)

摘要

Objectives. The objective of this study was to use a three-dimensional (3-D) finite element model to investigate normal stress distribution to substantiate the tooth flexure mechanism. The study also compared the changes in the stresses by different occlusal loading sites and directions. Methods. The 3-D finite element analysis was used. A maxillary premolar was selected to construct the simulation model. The model was constructed step-by-step for convergence and validity. Seven load conditions for various load sites and different directions were simulated to the model. Results. The maximal principal stress and minimal principal stress distributions developed within the structures of seven load conditions were output and their stress distributions on z-plane at the vertical midline were shown. The peak tensile stress of the cervical area for various load conditions were compared and listed. Conclusions. This study has shown that the presence of tensile stresses in the cervical region of a maxillary premolar by various loading sites and different directions. The results coincided with the stress-induced theory, hence sustaining it. The relationship of the affected factors of leverage to the development of cervical abfraction lesions, was explored.

原文英語
頁(從 - 到)283-290
頁數8
期刊Journal of Dentistry
30
發行號7-8
DOIs
出版狀態已出版 - 2002
對外發佈

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