华西口腔医学杂志2011，Vol.29Issue(2)：118-120,124,4.DOI:10.3969/j.issn.1000-1182.2011.02.002
人工楔状缺损对牙颈部硬组织应力分布的影响
Finite element contact stress analysis of simulating teeth with wedge shaped defeets in the cervical region
杨文丽 1林雪峰 2朱娟芳 1刘耀鹏3
作者信息
- 1. 郑州大学第一附属医院口腔科,郑州,450052
- 2. 中山大学光华口腔医学院·附属口腔医院修复科,广州,510055
- 3. 香港理工大学,土木结构工程学系,香港
- 折叠
摘要
Abstract
Objective To study the distribution of stress of simulating teeth with wedge shaped defects in the cervical region.Methods The models of anisotropic enamel of the mandibular first premolar and the opposite maxillary first premolar crown were created.A deffect was introduced into the model of mandibular premolar in the buccal cervical region along the enamelo-dentinal jumction(DEJ).The stress distribution in the cervical region of the mandibular premolar was investigated considering lateral condition simulating working micromotions.In this case, the stroke was applied to the maxillary first mandibular in a stepping procedure using nonlinear contact analysis.Results The stresses were concentrated in the defect of the enamel and dentin at the DEJ in the condition of lateral loading.As the defect length increased in size, the peak maximum principal stress(MPS) value and the magnitude of the stress field along the DEJ both increased.Conclusion Undermined cervical DEJ had a significant effect on the stress distribution in the buccal cervical region.关键词
(牙合)力/应力/接触分析/有限元法Key words
occlusal force/ stress/ contact analysis/ finite element method分类
医药卫生引用本文复制引用
杨文丽,林雪峰,朱娟芳,刘耀鹏..人工楔状缺损对牙颈部硬组织应力分布的影响[J].华西口腔医学杂志,2011,29(2):118-120,124,4.
