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


Dental cements
Dental pins
Smear layer
Sodium hypochlorite
Root canal irrigants.

How to Cite

Andrade CF, Fonseca Filho PFO da, Gabardo MCL, Cunha LF da, Baratto-Filho F, Leonardi DP. Bond strength at the cement/dentin interface according to protocols for final irrigation of post space. Braz. J. Oral Sci. [Internet]. 2019 Apr. 23 [cited 2024 Mar. 5];18:e191376. Available from:


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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