title: Bond strength of composite to porcelain treated with new porcelain repair agents.
abstract: In vitro tensile bond strengths of composite to porcelain were evaluated using three pretreatments (HF etching, sandblasting, diamond abrasion) of the porcelain, four bonding agents (Clearfil Porcelain Bond, Porcelain Liner M, Porcelain Liner M with Super-Bond C&B, and Scotchprime) and two storage conditions (24 h and thermocycling). The overall coefficient of variation was 27%. Significant differences among bond strengths were observed, with storage condition being the most important factor, followed by bonding agent and then pretreatment. Thermocycling decreased the bond strength of all samples, but samples treated with Scotchprime were affected least. For 24 h storage, Clearfil Porcelain Bond and Scotchprime had bond strengths above 23 MN/m2 to sandblasted porcelain.
authors.affiliation: University of Texas Health Science Center at Houston, Dental Branch.
authors.forename: D M
authors.initials: DM
authors.lastname: Wolf
authors.forename: J M
authors.initials: JM
authors.lastname: Powers
authors.forename: K L
authors.initials: KL
authors.lastname: O'Keefe
mesh_terms: D000704:Analysis of Variance; D001896:Boron Compounds; D003188:Composite Resins; D001840:Dental Bonding; D003738:Dental Cements; D003776:Dental Porcelain; D003780:Denture Repair; D006358:Hot Temperature; D008422:Materials Testing; D008689:Methacrylates; D008768:Methylmethacrylates; D019279:Resin Cements; D012821:Silanes; D013499:Surface Properties; D013718:Tensile Strength
chemical_list: D001896:Boron Compounds; C029849:Clearfil Bonding Agent; D003188:Composite Resins; D003738:Dental Cements; D008689:Methacrylates; D008768:Methylmethacrylates; D019279:Resin Cements; D012821:Silanes; D003776:Dental Porcelain; C061501:Scotchprime; C049495:Super-bond