title: Adhesive bonding to polymer infiltrated ceramic.
abstract: Aim of this study was to investigate the mechanism of adhesive bonding to the polymer-infiltrated ceramic VITA Enamic [VE]. Shear bond strength was measured with three resin composite cements: RelyX Unicem 2 Automix, Clearfil SA and Variolink II on polished surfaces of VE and its components silicate ceramic [SC] and polymer [PM] (n=12). Further, the effect of etching VE with 5% HF for 15-240 s and the application of silane coupling agents was analyzed in a screening test (n=6). Shear bond strength measurements were performed after 24 h of water storage at 37°C. Significant bonding to polished substrates could only be achieved on VE and SC when silane coupling agents were used. Etching of VE with 5% HF increased shear bond strength. Following silanization of etched VE, a further increase in shear bond strength could be established. Etching for more than 30 s did not improve shear bond strength.
authors.affiliation: Division of Materials Science and Engineering, Clinic for Reconstructive Dentistry and Temporomandibular Disorders, University Hospital for Dental Medicine, University of Basel.
authors.forename: Judith
authors.initials: J
authors.lastname: Schwenter
authors.forename: Fredy
authors.initials: F
authors.lastname: Schmidli
authors.forename: Roland
authors.initials: R
authors.lastname: Weiger
authors.forename: Jens
authors.initials: J
authors.lastname: Fischer
mesh_terms: D000269:Adhesives; D002516:Ceramics; D001840:Dental Bonding; D003776:Dental Porcelain; D008422:Materials Testing; D011108:Polymers; D019279:Resin Cements; D033081:Shear Strength; D012821:Silanes; D013499:Surface Properties
chemical_list: D000269:Adhesives; D011108:Polymers; D019279:Resin Cements; D012821:Silanes; D003776:Dental Porcelain