title: Surface modification with alumina blasting and H2SO4-HCl etching for bonding two resin-composite veneers to titanium.
abstract: The purpose of this study was to investigate the effect of an experimental surface treatment with alumina blasting and acid etching on the bond strengths between each of two resin composites and commercially pure titanium. The titanium surface was blasted with alumina and then etched with 45wt% H2SO4 and 15wt% HCl (H2SO4-HCl). A light- and heat-curing resin composite (Estenia) and a light-curing resin composite (Ceramage) were used with adjunctive metal primers. Veneered specimens were subjected to thermal cycling between 4 and 60°C for 50,000 cycles, and the shear bond strengths were determined. The highest bond strengths were obtained for Blasting/H2SO4-HCl/Estenia (30.2 ± 4.5 MPa) and Blasting/Etching/Ceramage (26.0 ± 4.5 MPa), the values of which were not statistically different, followed by Blasting/No etching/Estenia (20.4 ± 2.4 MPa) and Blasting/No etching/Ceramage (0.8 ± 0.3 MPa). Scanning electron microscopy observations revealed that alumina blasting and H2SO4-HCl etching creates a number of micro- and nanoscale cavities on the titanium surface, which contribute to adhesive bonding.
authors.affiliation: Department of Applied Prosthodontics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan.
authors.forename: Yohsuke
authors.initials: Y
authors.lastname: Taira
authors.forename: Takafumi
authors.initials: T
authors.lastname: Egoshi
authors.forename: Kohji
authors.initials: K
authors.lastname: Kamada
authors.forename: Takashi
authors.initials: T
authors.lastname: Sawase
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods*; D000537:Aluminum Oxide / Q000737:chemistry*; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding / Q000379:methods*; D045662:Dental Etching / Q000379:methods*; D003764:Dental Materials / Q000737:chemistry*; D003801:Dental Veneers; D006851:Hydrochloric Acid / Q000737:chemistry; D055115:Light-Curing of Dental Adhesives; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D058608:Nanopores / Q000648:ultrastructure; D011140:Polyurethanes / Q000737:chemistry; D033081:Shear Strength; D017640:Silicates / Q000737:chemistry; D013314:Stress, Mechanical; D013464:Sulfuric Acids / Q000737:chemistry; D013499:Surface Properties; D013696:Temperature; D014025:Titanium / Q000737:chemistry*; D015040:Zirconium / Q000737:chemistry
chemical_list: D003188:Composite Resins; D003764:Dental Materials; D008689:Methacrylates; D011140:Polyurethanes; D017640:Silicates; D013464:Sulfuric Acids; C574687:ceramage; C091839:urethanetrimethacrylate; D015040:Zirconium; D014025:Titanium; D000537:Aluminum Oxide; C033158:sulfuric acid; D006851:Hydrochloric Acid
keywords: adhesive bonding; computer-aided design/computer-aided manufacturing; surface treatment; titanium