title: Influence of a new push-out test method on the bond strength of three resin-based sealers.
abstract: OBJECTIVE
  Compare the displacement resistance of AH Plus, Ad Seal and Real Seal on dentine discs (DDs) treated with 10% citric acid, 17% EDTA or 2.5% NaOCl, through a new push-out test method.
  
  
  METHODS
  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).
  
  
  CONCLUSIONS
  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 AHPlus.
authors.affiliation: Department of Endodontics, Fluminense Federal University (UFF), Niteroi, RJ, Brazil.
authors.forename: M Z
authors.initials: MZ
authors.lastname: Scelza
authors.affiliation: PhD Program at the Dental School of the Fluminense Federal University (UFF), Niterói, RJ, Brazil.
authors.forename: D
authors.initials: D
authors.lastname: da Silva
authors.affiliation: PhD Program at the Dental School of the Fluminense Federal University (UFF), Niterói, RJ, Brazil.
authors.forename: P
authors.initials: P
authors.lastname: Scelza
authors.affiliation: PhD Program at the Dental School of the Fluminense Federal University (UFF), Niterói, RJ, Brazil.
authors.forename: F
authors.initials: F
authors.lastname: de Noronha
authors.affiliation: PhD Program at the Dental School of the Fluminense Federal University (UFF), Niterói, RJ, Brazil.
authors.forename: I B
authors.initials: IB
authors.lastname: Barbosa
authors.affiliation: Department of Endodontics, Florence Institute, São Luiz, Brazil.
authors.forename: E
authors.initials: E
authors.lastname: Souza
authors.affiliation: Department of Endodontics, Fluminense Federal University (UFF), Niteroi, RJ, Brazil.
authors.forename: G
authors.initials: G
authors.lastname: De Deus
mesh_terms: D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding / Q000379:methods*; D003799:Dental Stress Analysis; D004853:Epoxy Resins / Q000737:chemistry*; D006801:Humans; D066298:In Vitro Techniques; D007180:Incisor; D008422:Materials Testing; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012388:Root Canal Irrigants / Q000737:chemistry; D033081:Shear Strength
chemical_list: D003188:Composite Resins; D004853:Epoxy Resins; C511498:Real Seal composite resin; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; C534916:epoxy resin-based root canal sealer
keywords: dentine slice; push-out; resin sealers