Finite element contact stress analysis of the mandibular premolar cervix
- VernacularTitle:下颌前磨牙颈部硬组织非线性接触的应力分布有限元分析
- Author:
Wenli YANG
;
Xuefeng LIN
;
Xinchun ZHANG
- Publication Type:Journal Article
- Keywords:
Occlusal force;
Stress;
Contact analysis;
Finite element method
- From:
Journal of Practical Stomatology
2000;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To study the stress distribution of the mandibular premolar cervix during clenching and mastication. Methods:Models of anisotropic enamel of the mandibular first premolar and the opposite maxillary first premolar crown were establishied. The stress distributions in the cervical region of the mandibular premolar were investigated in different loading conditions: simulating working, nonworking and vertical micromotions. In each case, the stroke was applied to the maxillary first mandibular premolar in a stepping procedure using nonlinear contact analysis. Results:The stress in the cervical region under loading condition simulating vertical micromotion was lower than that under loading conditions simulating working and nonworking micromotions. The stress was mainly concentrated near the buccal or the lingual cervical enamelo-dentinal junction under loading conditions simulating lateral excursion. Conclusion:The stress distribution in the cervical region is closely related to the pattern of occlusal force including location and direction.
