ABSTRACT
Objectives
The aim of this study was to compare and evaluate the effect of calcium hydroxide [Ca(OH)2], 2% chlorhexidine (CHX) gel, and propolis when used as intracanal medicaments on the bond strength of a resin-based sealer (AH Plus Jet; Dentsply DeTrey, Konstanz, Germany) to the root dentin.
Materials and methods
Sixty freshly extracted single-rooted human teeth were utilized for this study and the crowns were decoronated. The root canals were instrumented and randomized into four groups according to the medicament used: Group I: Control; group II: Ca(OH)2; group III: CHX; group IV: Propolis. The specimens were stored for 10 days in 100% humidity at 37°C, and the intracanal dressings were removed by rinsing with 10 mL of 17% ethylenediaminetetraacetic acid followed by 10 mL of 2.5% sodium hypochlorite, then obturated with gutta-percha and AH Plus Jet sealer. A push-out test to measure the bond strength between the root canal dentin and the sealer was done. Two-way analysis of variance and Tukey’s post hoc pairwise tests were used for statistical analysis.
Results
The use of intracanal medicaments had shown to significantly influence the push-out bond strengths of the resin sealer used (p < 0.05). At coronal and middle thirds, there was no significant difference in bond strengths among all the four groups (p > 0.05). At apical third, the mean bond strength value for propolis group was significantly superior when compared with the other three groups (p < 0.05). The CHX group showed higher bond strength values at apical third compared with Ca(OH)2 and control groups, but it was not significant (p > 0.05).
Conclusion
Propolis showed superior push-out bond strength than CHX, Ca(OH)2, and control groups at apical third, while no significant differences were observed among all the groups at coronal and middle thirds.
How to cite this article
Shivanna V, Bhargavi R. An in vitro Comparison of the Effect of Three Different Endodontic Medicaments on the Bond Strength of a Resin-based Endodontic Sealer to the Root Canal Dentin. CODS J Dent 2016;8(1):28-32.
Evaluation of some intracanal irrigants on push-out bond strength and mode of failure of resin and non resin cements to root canal dentin (in vitro comparative study)