title: Influence of silane and solvated bonding agents on the bond strength to glass-fibre posts.
abstract: The combined use of silane and solvated bonding agents on the bond strength to glass-fibre posts was investigated. A model Bis-GMA/HEMA adhesive was formulated with no solvent, 30% of ethanol or 80% of acetone. The surfaces of rectangular-shaped posts were silanated or not and one of the agents was applied, except for the control group. Cylinders of resin cement (RelyX ARC, 3M ESPE, Saint Paul, MN, USA) were built-up on the surfaces (n = 20) and submitted to shear testing. All groups showed higher bond strengths when the surfaces were silanated. When no silanization was carried out, the use of bonding agents, either solvated or non-solvated, increased the bond strengths. All groups treated with both silane and bonding agent showed higher bond strengths than the group that was only silanated. Control and ethanol-based adhesives were similar, whereas the acetone-based agent yielded higher bond strengths. Adhesive failures were predominant. Combination of silane and adhesive enhanced the bond to fibre posts.
authors.affiliation: School of Dentistry, Federal University of Pelotas, Pelotas, RS, Brazil Piracicaba Dental School, State University of Campinas, Piracicaba, SP, Brazil.
authors.forename: Aline S
authors.initials: AS
authors.lastname: Oliveira
authors.forename: Elisa S
authors.initials: ES
authors.lastname: Ramalho
authors.forename: Aloísio O
authors.initials: AO
authors.lastname: Spazzin
authors.forename: Lucas Z
authors.initials: LZ
authors.lastname: Naves
authors.forename: Rafael R
authors.initials: RR
authors.lastname: Moraes
mesh_terms: D000096:Acetone / Q000737:chemistry; D000268:Adhesiveness; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D001840:Dental Bonding; D003764:Dental Materials / Q000737:chemistry*; D017267:Dental Prosthesis Design; D003799:Dental Stress Analysis / Q000295:instrumentation; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D004853:Epoxy Resins / Q000737:chemistry; D000431:Ethanol / Q000737:chemistry; D005898:Glass / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D011092:Polyethylene Glycols / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry; D011176:Post and Core Technique / Q000295:instrumentation*; D019279:Resin Cements / Q000737:chemistry; D055116:Self-Curing of Dental Resins / Q000379:methods; D033081:Shear Strength; D012821:Silanes / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry*; D013314:Stress, Mechanical; D013499:Surface Properties
chemical_list: D003764:Dental Materials; D017220:Dentin-Bonding Agents; D004853:Epoxy Resins; D008689:Methacrylates; D011109:Polymethacrylic Acids; C462240:RelyX ARC; D019279:Resin Cements; D012821:Silanes; D012997:Solvents; C009753:fiberglass; D000096:Acetone; D000431:Ethanol; D011092:Polyethylene Glycols; D017438:Bisphenol A-Glycidyl Methacrylate; C005044:hydroxyethyl methacrylate
keywords: acetone; adhesives; ethanol; resin cements; silanes