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Influence of a new push‐out test method on the bond strength of three resin‐based sealers
Author(s) -
Scelza M. Z.,
Silva D.,
Scelza P.,
Noronha F.,
Barbosa I. B.,
Souza E.,
De Deus G.
Publication year - 2015
Publication title -
international endodontic journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.988
H-Index - 119
eISSN - 1365-2591
pISSN - 0143-2885
DOI - 10.1111/iej.12378
Subject(s) - bond strength , universal testing machine , materials science , distilled water , seal (emblem) , dentin , citric acid , significant difference , dentistry , ultimate tensile strength , composite material , chemistry , mathematics , adhesive , medicine , chromatography , art , visual arts , statistics , organic chemistry , layer (electronics)
Aim Compare the displacement resistance of AH P lus, A d S eal and R eal S eal on dentine discs ( DD s) treated with 10% citric acid, 17% EDTA or 2.5% N a OC l, through a new push‐out test method. Methodology From the middle third of the roots of 15 maxillary central incisors, three dentine discs 1 ± 0.1 mm thick were obtained. On the axial surface of each dentine disc, three 1.2‐mm‐wide holes were drilled. In the third dentine disc from the same root, each hole was treated with one of three irrigating solutions for 30 s, rinsed with distilled water and dried. Each hole of the same dentine disc was filled with sealer, and the discs were maintained at 37 °C for 7 days. The dentine discs were fixed on a testing machine to test the shear strength. Data were compared using the univariate anova test with a 5% significance level. The Tukey test was used for multiple comparisons. Results The irrigating solutions did not affect the adhesion of the sealers ( P > 0.05). There was no significant difference between the Ad Seal and AHPlus ( P > 0.05); however, Real Seal had a significantly lower shear bond strength ( P < 0.05). Conclusion The use of different irrigating solutions did not affect resistance to the displacement of resin sealers. Real Seal sealer was less resistant than Ad Seal and AHP lus.