Effect of a sonic device on bonding of fiberglass posts to root canals

  • Marina de Almeida Salim
  • Thais Mageste Duque
  • Heloisa Carla Dell Santo Gusman
  • Carolina Oliveira de Lima
  • Brenda Paula Figueiredo de Almeida Gomes
  • Renata Antoun Simão
  • Maíra do Prado

Abstract

Aim: This study evaluated the effect of a sonic device on the bonding of fiberglass posts cemented with a self-etching adhesive combined with conventional cement or a self-adhesive cement to root dentin. Methods: Forty single-rooted bovine incisors were endodontically prepared using a step-back technique. Gutta-percha and AH Plus sealer were used for root canal filling, combined with a thermoplasticization technique. After 1 week, the post space was prepared and the roots were divided into four groups according to the following factors: adhesive system/resin cement (Ambar/ AllCem Core [FGM] and RelyX U200 [3M]) and application mode (manual or sonic). The posts were cemented and the roots were cut into discs and submitted to push-out bond strength (POBS) test. The failure mode was evaluated using a stereoscope at 25x magnification. The data were analyzed statistically using ANOVA and Tukey’s post-hoc test (α = 0.05). Results: The sonically activated RelyX U200 group was superior to the other groups. RelyX U200 manually applicated showed similar results to those of sonically activated Âmbar/AllCem. These three groups outperformed the Âmbar/AllCem manually applicated group. Adhesive failure between dentin and resin cement was the most predominant pattern. Conclusion: Sonic application of self-etching adhesive and self-adhesive cement improved the POBS of fiber posts to the root canal.

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Published
2019-01-25
How to Cite
SALIM, Marina de Almeida et al. Effect of a sonic device on bonding of fiberglass posts to root canals. Brazilian Journal of Oral Sciences, [S.l.], p. e18924, jan. 2019. ISSN 1677-3225. Available at: <https://www.fop.unicamp.br/bjos/index.php/bjos/article/view/1521>. Date accessed: 22 july 2019. doi: https://doi.org/10.20396/bjos.v17i0.8654177.
Section
Original Research

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