Establishment and stress analysis of buccal-occlusal-lingual inlay finite element model of mandibular first molar
10.12016/j.issn.2096-1456.2019.04.007
- Author:
CHEN Jingping
1
;
WU Buling
2
Author Information
1. Department of Stomatology, JinCheng people′s hosptial of Shanxi Province
2. Nanfang Hospital, Southern Medical University &Stomatological College of Southern Medical University
- Publication Type:Journal Article
- Keywords:
Mandibular first molar;
Bucco-occluso-lingual (BOL) inlay;
Three-dimensional finite element;
Stress analysis;
Cracked tooth
- From:
Journal of Prevention and Treatment for Stomatological Diseases
2019;27(4):241-245
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To observe the stress distribution according to a model of the bucco-occluso-lingual (BOL) inlay of mandibular first molar after restoration to provide a basis for the clinical treatment of cracked tooth with BOL inlay.
Methods:A three-dimensional finite element model of mandibular first molar was established by combining micro-CT scanning technology with Mimics, UG, Ansys and Midas-FEA software. Based on this model, a BOL inlay restoration model was established. The material parameter of inlay IPS e.max CAD was given, and a Von-mises stress distribution nephogram under the same loading condition was obtained. The results of the stress distribution in each model were compared.
Results :The stress of intact teeth is mainly concentrated in the central fissure of the occlusal surface at the crown. The stress of the cavity after BOL inlay restoration is mainly concentrated in the mesial and distal walls of the cavity, the axial-pulpal line angle and the gingival wall. The stress of the inlay is mainly distributed at the bottom of the inlay, axial wall and the gingival wall.
Conclusion:BOL inlay restoration change the stress distribution in the complete dental model, which relieves the stress concentration in the fossa and groove of the occlusal surface and can play an active role in the treatment of cracked tooth.
- Full text:下颌第一磨牙颊-頜-舌嵌体有限元模型的建立及应力分析.pdf
