The effects of composition, diameter and post-curing methods on the flexural properties of fiber posts.

  • Nadia Ereifej School of Dentistry, The University of Jordan, Amman.
  • Eugenio Jose Garcia School of Dentistry, Universitary Center UNINOVE, São Paulo.
  • Diego Noroña School of Dentistry, National University of Córdoba, Córdoba.
  • Rosa Helena Miranda Grande School of Dentistry, University of São Paulo, São Paulo.

Abstract

Objective: This study evaluated the influence of fiber composition, diameter and post-curing treatments performed at relining on flexural strength and modulus of fiber-posts. Materials and methods: Sixty posts of Reforpost® Glass Fiber [GF]) and Reforpost® Carbon Fiber [CF] (Angelus, Londrina, PR, Brazil) with diameters of 1.0mm and 1.4mm were used. Each group was further subdivided into three subgroups (n=5) according to treatment received: dry-stored control group (C), oven-cured (Ov) or autoclaved (Ac). A universal testing machine measured flexural strength and modulus of all specimens. Results: Post composition and post-curing treatments had no significant effects on flexural properties of specimens while post diameter had significant effects (p< 0.05). The highest flexural strength and modulus (MPa) (1331±95.8 and 21532±1550, respectively) were obtained with Ov/GF/1.1, while lowest values (890±79.4 and 10675±952, respectively) were for Ac/GF/1.5. Conclusions: 1.1mm diameter posts had better mechanical properties than 1.5mm thick posts. Neither post composition nor post-curing procedures affected the mechanical properties of relined posts.

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Published
2016-03-02
How to Cite
EREIFEJ, Nadia et al. The effects of composition, diameter and post-curing methods on the flexural properties of fiber posts.. Journal of Oral Research, [S.l.], v. 5, n. 2, p. 71-76, mar. 2016. ISSN 0719-2479. Available at: <http://www.joralres.com/index.php/JOR/article/view/joralres.2016.015>. Date accessed: 20 sep. 2019. doi: https://doi.org/10.17126/joralres.2016.015.
Section
Articles

Keywords

fiber-posts; composition; diameter; post-curing.