title: [Effect of different surface treatments on the shear bond of zirconia substructure and veneering ceramic].
abstract: OBJECTIVE
  To investigate the effect of different surface treatments on the shear bond strength of zirconia substructure and veneering ceramic.
  
  
  METHODS
  Kavo zirconia specimens were divided into 4 groups (each group contains 8 specimens) according to different surface treatments: Group A was pigmented by dipping presintered blocks in the coloring solution VITA LL5, and not treated with abrasion after firing; Group B was pigmented with the same solution and then dealt with abrasion; Group C was not treated by any methods and Group D was only dealt with abrasion. All the veneering ceramics were fired on the zirconia substructure by slip-casting technique and the shear bond strength of zirconia substructure and veneering ceramic were tested. The data was analyzed statistically with SPSS 10.0 software package.
  
  
  RESULTS
  The shear bond strength of the abrasive-treated groups (group B and group D) was significantly higher than the other two groups, but no significant difference was found between pigmented-treated groups (group A and group C) and non-pigmented-treated groups (group B and group D).
  
  
  CONCLUSIONS
  Abrasion can increase the shear bond between Kavo zirconia substructure and veneering ceramics while pigmentation has no significant effect on the bonding strength.
authors.affiliation: Shanghai Stomatological Disease Center. Shanghai 200031, China.E-mail:zhongqun681115@qq.com.
authors.forename: Qun
authors.initials: Q
authors.lastname: Zhong
authors.forename: Yan
authors.initials: Y
authors.lastname: Peng
authors.forename: Xue-ying
authors.initials: XY
authors.lastname: Wu
authors.forename: Jia-wei
authors.initials: JW
authors.lastname: Weng
mesh_terms: D002516:Ceramics; D001840:Dental Bonding; D003776:Dental Porcelain; D003799:Dental Stress Analysis; D003801:Dental Veneers; D008422:Materials Testing; D033081:Shear Strength; D013499:Surface Properties; D015040:Zirconium
chemical_list: D003776:Dental Porcelain; D015040:Zirconium; C028541:zirconium oxide