title: The impact of endodontic irrigating solutions on the push-out shear bond strength of glass fiber posts luted with resin cements.
abstract: Resin-based restorative materials, widely used to cement posts, may be influenced by irrigants used during endodontic chemical-mechanical preparation. This study evaluated the impact of endodontic irrigating solutions and adhesive cement systems on the push-out shear bond strength of glass fiber posts to root dentin. Ninety-six bovine incisors were divided into 12 groups (4 irrigants × 3 resin cements; n = 8). Prepared canals were irrigated with saline solution, 2.5% sodium hypochlorite (NaOCl), 5.25% NaOCl, or 2% chlorhexidine gel, and posts were cemented with RelyX ARC, Panavia F, or RelyX U100. The bond strength was evaluated by means of the push-out test, and results were subjected to analysis of variance. The mean bond strength observed for the combination of 5.25% NaOCl irrigant and RelyX U100 cement was significantly lower (8.82 MPa) than the values found for the other groups (P < 0.05). The other combinations of irrigating solution and resin cement had no adverse effect on the bond strength of the glass fiber posts to dentin.
authors.forename: Carlos Eduardo da Silveira
authors.initials: CE
authors.lastname: Bueno
authors.forename: Rina Andrea
authors.initials: RA
authors.lastname: Pelegrine
authors.forename: Cláudia Fernandes de Magalhães
authors.initials: CF
authors.lastname: Silveira
authors.forename: Vanessa Castro Pestana da Silveira
authors.initials: VC
authors.lastname: Bueno
authors.forename: Vanessa de Oliveira
authors.initials: Vde O
authors.lastname: Alves
authors.forename: Rodrigo Sanches
authors.initials: RS
authors.lastname: Cunha
authors.forename: Gisele Damiana da Silveira
authors.initials: GD
authors.lastname: Pereira
authors.forename: Luis Alexandre Maffei Sartini
authors.initials: LA
authors.lastname: Paulillo
mesh_terms: D000818:Animals; D002417:Cattle; D001840:Dental Bonding / Q000379:methods; D011176:Post and Core Technique; D019279:Resin Cements / Q000627:therapeutic use*; D012388:Root Canal Irrigants / Q000627:therapeutic use*; D018915:Root Canal Preparation / Q000379:methods*; D033081:Shear Strength
chemical_list: D019279:Resin Cements; D012388:Root Canal Irrigants