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Finite element analysis of stress distribution in four different endodontic post systems in a model canine

Issue title: Frontiers in Biomedical Engineering and Biotechnology – Proceedings of the 4th International Conference on Biomedical Engineering and Biotechnology, 18–21 August 2015, Shanghai, China

Guest editors: Feng Liu, Dong-Hoon Lee, Ricardo Lagoa and Sandeep Kumar

Article type: Research Article

Authors: Chen, Aijie | Feng, Xiaoli | Zhang, Yanli | Liu, Ruoyu | Shao, Longquan; *

Affiliations: Nanfang Hospital, Southern Medical University, Guangzhou 510515, China

Correspondence: [*] Address for correspondence: Longquan Shao, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China. Tel.: +86 15989283921; Fax: 020-62787153; E-mail: shaolongquan@smu.edu.cn.

Keywords: FEA, CAD/CAM, post, canine

DOI: 10.3233/BME-151354

Journal: Bio-Medical Materials and Engineering, vol. 26, no. s1, pp. S629-S635, 2015

Published: 2015
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To investigate the stress distribution in a maxillary canine restored with each of four different post systems at different levels of alveolar bone loss. Two-dimensional finite element analysis (FEA) was performed by modeling a severely damaged canine with four different post systems: CAD/CAM zirconia, CAD/CAM glass fiber, cast titanium, and cast gold. A force of 100 N was applied to the crown, and the von Mises stresses were obtained. FEA revealed that the CAD/CAM zirconia post system produced the lowest maximum von Mises stress in the dentin layer at 115.8 MPa, while the CAD/CAM glass fiber post produced the highest stress in the dentin at 518.2 MPa. For a severely damaged anterior tooth, a zirconia post system is the best choice while a cast gold post ranks second. The CAD/CAM glass fiber post is least recommended in terms of stress level in the dentin.

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