title: Bond strength between four luting systems and enamel modified with phosphoric acid.
abstract: The purpose of this study was to investigate the effect of phosphoric acid etching on the bond strength between enamel and three luting materials employing self-etching primer (PanaviaF2.0, Linkmax, and Multibond). A luting material without self-etching primer (Super-Bond) was used as a control. Two etching agents (K-etchant and Red Activator) were prepared. The surfaces of bovine enamel were ground, etched with either K-etchant or Red Activator, and then bonded to a stainless steel rod. Tensile bond strengths were determined following 24-hour immersion in water. Without etching, all of the luting materials showed the same statistical bond strength. When K-etchant was applied, the bond strengths of PanaviaF2.0, Linkmax, Multibond, and Super-Bond were significantly greater than that of non-etched control. No significant differences were found between K-etchant and Red Activator. Strongest bonds were obtained for Super-Bond in conjunction with K-etchant (23.6 +/- 6.3 MPa) or Red Activator (21.0 +/- 6.5 MPa), whereby the values were statistically comparable.
authors.affiliation: Division of Fixed Prosthodontics and Oral Rehabilitation, Nagasaki University Graduate School of Biomedical Sciences, Japan. yohsuke@net.nagasaki-u.ac.jp
authors.forename: Yohsuke
authors.initials: Y
authors.lastname: Taira
authors.forename: Maki
authors.initials: M
authors.lastname: Shimoda
authors.forename: Kumiko
authors.initials: K
authors.lastname: Abe
authors.forename: Kohyoh
authors.initials: K
authors.lastname: Soeno
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Atsuta
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods*; D000704:Analysis of Variance; D000818:Animals; D001896:Boron Compounds; D002417:Cattle; D003188:Composite Resins; D001840:Dental Bonding; D003743:Dental Enamel / Q000187:drug effects*; D003799:Dental Stress Analysis; D008422:Materials Testing; D008689:Methacrylates; D008768:Methylmethacrylates; D010756:Phosphoric Acids / Q000494:pharmacology*; D011897:Random Allocation; D019279:Resin Cements; D018709:Statistics, Nonparametric; D013718:Tensile Strength
chemical_list: D001896:Boron Compounds; D003188:Composite Resins; C470486:Linkmax; D008689:Methacrylates; D008768:Methylmethacrylates; C482145:Multibond; C438843:Panavia-Fluoro; D010756:Phosphoric Acids; D019279:Resin Cements; C049495:Super-bond; C030242:phosphoric acid