Bond strength at the cement/dentin interface according to protocols for final irrigation of post space

  • Carla Frehner Andrade School of Life Sciences, Positivo University
  • Paulo Fernando Otoni da Fonseca Filho School of Life Sciences, Positivo University
  • Marilisa Carneiro Leão Gabardo School of Life Sciences, Positivo University
  • Leonardo Fernandes da Cunha School of Life Sciences, Positivo University
  • Flares Baratto-Filho School of Life Sciences, Positivo University
  • Denise Piotto Leonardi School of Life Sciences, Positivo University https://orcid.org/0000-0003-1686-1078
Keywords: Dental cements, Dental pins, Smear layer, Sodium hypochlorite, Root canal irrigants.

Abstract

Aim: The aim was to evaluate the bond strength at the cement/dentin interface in the post space, after specimens were treated with different final irrigation protocols, followed by cementation with a dual resin cement. Methods: Forty-eight extracted uniradicular human premolars were divided into four groups according to the irrigation (n = 12): control with distilled water; 2.5% sodium hypochlorite (NaOCl) + ethylenediaminetetraacetic acid (EDTA); 2.5% NaOCl + passive ultrasonic irrigation (PUI); and 2% chlorhexidine (CHX). The pull-out test was performed. The results were evaluated using ANOVA with Tukey’s paired comparisons, with a significance of 5%. Results: When all groups were compared, significant difference occurred (p = 0.006), and in the paired comparison, NaOCl + PUI and CHX differed (p = 0.005). The CHX showed significantly higher adhesive defects between cement and dentin than other groups. Conclusions: The final irrigation protocol for cleaning after preparation for post space directly influences the bond strength at the cement/dentin interface.

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Published
2019-04-23
How to Cite
Andrade, C. F., Fonseca Filho, P. F. O. da, Gabardo, M. C. L., Cunha, L. F. da, Baratto-Filho, F., & Leonardi, D. P. (2019). Bond strength at the cement/dentin interface according to protocols for final irrigation of post space. Brazilian Journal of Oral Sciences, 18, e191376. https://doi.org/10.20396/bjos.v18i0.8655275