MATEC Web Conf.
Volume 145, 2018NCTAM 2017 – 13th National Congress on Theoretical and Applied Mechanics
|Number of page(s)||6|
|Published online||09 January 2018|
Effect of post type on the fracture resistance of endodontically treated premolars
Department of Operative Dentistry and Endodontics, Faculty of Dental Medicine, Medical University – Plovdiv, 4002 Plovdiv, Bulgaria
2 Institute of Mechanics, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
3 Department of Applied and Institutional Sociology, University of Plovdiv “Paisii Hilendarski”, 4000 Plovdiv, Bulgaria
* Corresponding author: firstname.lastname@example.org
Endodontically treated teeth (ETT) are more susceptible to fracture during mastication. The aim of our study was to investigate the fracture resistance of premolars, restored with different techniques. Eighteen human premolars, extracted for orthodontic or periodontal reasons, were used. Mesio-occlusal cavities were prepared on all of them. They were divided into 3 groups according to the restoration method: with a cemented fiber post (FP), with a cemented metal post (MP) and without a post, but restored with a fiber reinforced composite core (FRC). After thermocycling, their fracture resistance was evaluated in a standard testing machine. The results were analyzed with one-way ANOVA and Tukey Honestly Significant Difference (HSD) tests (p<0.05). The fracture modes were also determined. The MP group showed the lowest fracture resistance rates and the highest number of unrestorable root fractures. In conclusion, teeth restored with FRC cores or FP show better survival rates than those restored with metal posts.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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