Construction of a three-dimensionaI finite eIement modeI of puIp-exposed maxiIIary premoIar with wedge-shaped defect restored by fiber post
10.3969/j.issn.2095-4344.0004
- VernacularTitle:纤维桩修复上颌前磨牙穿髓型楔状缺损三维有限元模型的建立
- Author:
Si-Su MO
1
;
Wei BAO
;
Qing-Yi SHEN
Author Information
1. 上海德伦口腔门诊部有限公司
- From:
Chinese Journal of Tissue Engineering Research
2018;22(2):183-188
- CountryChina
- Language:Chinese
-
Abstract:
BACKGROUND: To date, there is no report on the successful construction of a three-dimensional finite element model of maxillary premolar with wedge-shaped defect restored by fiber post.OBJECTIVE: To establish the three-dimensional finite element model of maxillary premolar with wedge-shaped defect restored by fiber post. METHODS: Micro-CT was used to obtain imaging information of the human maxillary first premolar sample. Then Mimics, Geomagic and Hypermesh were used to establish a clear-structured three-dimensional finite element model of pulp-exposed maxillary premolar with wedge-shaped defect restored by fiber post. RESULTS AND CONCLUSION: The three-dimensional finite element model of normal maxillary premolar had 180 119 units and 33 289 nodes. Compared with the real subject, the three-dimensional finite element model of maxillary premolar with wedge-shaped defect restored by fiber post had vivid appearance, good image quality and accurate grid partitioning with 237 496 units and 43 965 nodes in total, which could obtain good results in the aspects of geometry, boundary constraint and mechanical compatibility. Moreover, it could better simulate the mechanical stress distribution of diseased teeth under occlusion to further confirm the magnitude and distribution of forces, thereby providing a better basis for future biomechanical studies.
