title: Durability of enamel bond strength of simplified bonding systems.
abstract: The purpose of this study was to investigate the influence of thermal cycling on enamel bond strength of 2-step bonding systems. The systems used were self-etching primer systems; Imperva Fluoro Bond, Clearfil Liner Bond II, and Mac Bond II; and self-priming adhesive systems; One Step, OptiBond Solo, Prime & Bond 2.0, and Single Bond. Bovine mandibular incisors were mounted in self-curing resin and the facial surfaces were wet ground with #600 SiC paper. Enamel surfaces were treated following each manufacturer's instructions. Adhesives were applied and composites were condensed into a Teflon mold (phi 4 x 2 mm) and light cured. Bonded specimens were divided into four groups; stored in 37 degrees C water for 24 hours, followed by thermal cycling between 5 degrees C and 60 degrees C for 3,000, 10,000, and 30,000 cycles. Ten samples per test group were tested in shear mode at a crosshead speed of 1.0 mm/min. One-way ANOVAs followed by Duncan's multiple range test (p < 0.05) were done. For self-etching primer systems, a significant decrease in bond strength was observed for the thermal cycling groups. For the self-priming adhesive systems, a small decrease in bond strength was observed but no significant differences were found for thermal cycling groups. The changes in bond strength after thermal cycling were different between the bonding systems.
authors.affiliation: Nihon University School of Dentistry, Department of Operative Dentistry, 1-8-13, Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8310, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Miyazaki
authors.forename: M
authors.initials: M
authors.lastname: Sato
authors.forename: H
authors.initials: H
authors.lastname: Onose
mesh_terms: D000134:Acid Etching, Dental; D000473:Alkanes / Q000737:chemistry; D000704:Analysis of Variance; D000818:Animals; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D017554:Carbon Compounds, Inorganic; D002417:Cattle; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding; D003738:Dental Cements / Q000737:chemistry; D003743:Dental Enamel / Q000648:ultrastructure*; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D005460:Fluorides, Topical / Q000737:chemistry; D008027:Light; D008298:Maleates / Q000737:chemistry; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D011109:Polymethacrylic Acids / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry; D017655:Silicon Compounds; D013223:Statistics as Topic; D013314:Stress, Mechanical; D013499:Surface Properties; D013816:Thermodynamics; D014867:Water
chemical_list: D000473:Alkanes; C103506:Bis-GMA, BPDM, HEMA dental-bonding resin; D017554:Carbon Compounds, Inorganic; C112274:Clearfil Liner Bond 2; D003188:Composite Resins; D003738:Dental Cements; D017220:Dentin-Bonding Agents; D005460:Fluorides, Topical; C072652:FluoroBond; C074806:Imperva-Bond; D008298:Maleates; D008689:Methacrylates; C092987:Optibond; D011109:Polymethacrylic Acids; C103500:Prime & Bond; D019279:Resin Cements; D017655:Silicon Compounds; C115514:Tokuso Mac Bond; C115612:single bond; D014867:Water; D017438:Bisphenol A-Glycidyl Methacrylate; C022088:silicon carbide