title: Chemical cleaning agents and bonding to glass-fiber posts.
abstract: The influence of chemical cleaning agents on the bond strength between resin cement and glass-fiber posts was investigated. The treatments included 10% hydrofluoric acid, 35% phosphoric acid, 50% hydrogen peroxide, acetone, dichloromethane, ethanol, isopropanol, and tetrahydrofuran. Flat glass-fiber epoxy substrates were exposed to the cleaners for 60 s. Resin cement cylinders were formed on the surfaces and tested in shear. All treatments provided increased bond strength compared to untreated control specimens. All failures were interfacial. Although all agents improved the bond strength, dichloromethane and isopropanol were particularly effective.
authors.affiliation: School of Dentistry, Univ Federal de Pelotas, Pelotas, RS, Brazil.
authors.forename: Ana Paula Rodrigues
authors.initials: AP
authors.lastname: Gonçalves
authors.forename: Aline de Oliveira
authors.initials: Ade O
authors.lastname: Ogliari
authors.forename: Patrícia dos Santos
authors.initials: Pdos S
authors.lastname: Jardim
authors.forename: Rafael Ratto de
authors.initials: RR
authors.lastname: Moraes
mesh_terms: D000704:Analysis of Variance; D057886:Bleaching Agents / Q000737:chemistry*; D001840:Dental Bonding / Q000379:methods*; D019232:Dental Restoration Failure; D005898:Glass / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D011176:Post and Core Technique; D019279:Resin Cements / Q000737:chemistry*; D033081:Shear Strength; D013499:Surface Properties
chemical_list: D057886:Bleaching Agents; D019279:Resin Cements; C009753:fiberglass