Effects of undermining damage of enamelo-dentinal junction on stress distribution of sclerous tissues of dental cervix
10.3969/j.issn.2095-4344.2014.07.006
- VernacularTitle:釉牙本质界潜行性破坏对牙颈部硬组织应力分布的影响
- Author:
Wenli YANG
;
Xuefeng LIN
;
Yaopeng LIU
- Publication Type:Journal Article
- Keywords:
dentin;
dental stress analysis;
bite force;
finite element analysis
- From:
Chinese Journal of Tissue Engineering Research
2014;(7):1015-1020
- CountryChina
- Language:Chinese
-
Abstract:
BACKGROUND:Finite element contact analysis was performed in premolars of lower mandible with enamelo-dentinal junction defects, which provided biomechanical evidence for the prevention of wedge-shaped defect and occlusion treatment.
OBJECTIVE:To analyze the effects of undermining damage of the enamelo-dentinal junction on the stress distribution of sclerous tissues of dental cervix.
METHODS:Triangle defects were established and models of wedge-shaped defect were designed in mandibular premolar along the enamelo-dentinal junction. The stresses during tightly biting and masticatory movement were simulated. Nonlinear contact analysis was conducted in sclerous tissues of mandibular premolar in the buccal cervical region.
RESULTS AND CONCLUSION:By simulating the stresses during tightly biting and masticatory movement, the stresses were concentrated in the defected regions of mandibular premolar at the enamelo-dentinal junction. With the defect length increased in size, the stress value and the magnitude of the stress field both increased. These indicated that the destruction of enamelo-dentinal junction altered stress distribution in the buccal cervical region. In the clinic, wedge-shaped defect should be fil ed promptly.
