title: Bond strength of resin cements to H2O2-treated titanium plates.
abstract: OBJECTIVE
  This study investigated the effects of H(2)O(2)-treatment of titanium surfaces on cement shear bond strengths, and characterized H(2)O(2)-treated titanium surfaces.
  
  
  METHODS
  Using 34.5% hydrogen peroxide solution, cp Ti plates (10 mm x 10 mm x 1 mm) were treated by (1) an immersion method, and (2) halogen irradiation while immersed in H(2)O(2) for varying times. A cylindrical block (6 mm diameter, 4 mm height) of four different cements was bonded onto H(2)O(2)-treated surfaces. The cement bond strengths were evaluated under shear mode. Treated surfaces were also characterized for color change, wettability, AC impedance, and transmission electron diffraction of stripped oxide film.
  
  
  RESULTS
  The cement shear bond strength of cp Ti treated with H(2)O(2) and halogen for 160 s was the highest and was approximately 14 times higher than the un-treated control cp Ti plates. Bond strengths are correlated linearly to wettability. The more surface wetted with the cement material, the higher the resultant shear bond strength value.
  
  
  CONCLUSIONS
  These results suggest that a combined treatment of hydrogen peroxide and halogen light irradiation provides an effective surface condition with appropriate oxide film thickness to enhance the cement bond strength.
authors.affiliation: Department of Dental Materials, Hard Tissue Research, Matsumoto Dental University, Tokyo, Japan.
authors.forename: Takamitsu
authors.initials: T
authors.lastname: Yoshida
authors.forename: Nobuyoshi
authors.initials: N
authors.lastname: Terashima
authors.forename: Toru
authors.initials: T
authors.lastname: Niiro
authors.forename: Sakae
authors.initials: S
authors.lastname: Nagasawa
authors.forename: Michio
authors.initials: M
authors.lastname: Ito
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Yagasaki
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Oshida
authors.forename: Parul
authors.initials: P
authors.lastname: Agarwal
mesh_terms: D003116:Color; D001840:Dental Bonding; D003764:Dental Materials / Q000737:chemistry* / Q000528:radiation effects; D017097:Electric Impedance; D004563:Electrochemistry; D006801:Humans; D006861:Hydrogen Peroxide / Q000737:chemistry*; D007101:Immersion; D008027:Light; D008422:Materials Testing; D016877:Oxidants / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry* / Q000528:radiation effects; D033081:Shear Strength; D013314:Stress, Mechanical; D013499:Surface Properties; D013997:Time Factors; D014025:Titanium / Q000737:chemistry* / Q000528:radiation effects; D017155:Wettability
chemical_list: D003764:Dental Materials; D016877:Oxidants; D010087:Oxides; D019279:Resin Cements; D006861:Hydrogen Peroxide; D014025:Titanium