title: Effects of silica-coating on surface topography and bond strength of porcelain fused to CAD/CAM pure titanium.
abstract: The aim of this study was to evaluate the shear bond strength of porcelain fusing to titanium and the effects of surface treatment on surface structure of titanium. In the shear bond strength test, titanium surface treatments were: conventional, silica-coating without bonding agent, and silica-coating with bonding agent. Titanium surface treatments for analysis by the atomic force microscope (AFM) were: polishing, alumina sandblasting and silica-coating. The shear bond strength value of silica-coating with bonding agent group showed significantly higher than that of other groups. In AFM observation results, regular foamy structure which is effective for wetting was only observed in silica-coating. Therefore, this structure might indicate silicon. Silica-coating renders forms a nanoscopic regular foamy structure, involved in superhydrophilicity, to titanium surface, which is markedly different from the irregular surface generated by alumina sandblasting.
authors.affiliation: Division of Minimal Intervention Prosthetic Dentistry, Department of Highly Advanced Stomatology, Kanagawa Dental University, Yokohama Clinic.
authors.forename: Takushi
authors.initials: T
authors.lastname: Fukuyama
authors.forename: Naho
authors.initials: N
authors.lastname: Hamano
authors.forename: Satoshi
authors.initials: S
authors.lastname: Ino
mesh_terms: D000537:Aluminum Oxide; D001840:Dental Bonding; D003776:Dental Porcelain; D008422:Materials Testing; D033081:Shear Strength; D012822:Silicon Dioxide; D013499:Surface Properties; D014025:Titanium
chemical_list: D003776:Dental Porcelain; D012822:Silicon Dioxide; D014025:Titanium; D000537:Aluminum Oxide