title: Effect of surface treatments on the bond strength between resin cement and differently sintered zirconium-oxide ceramics.
abstract: OBJECTIVE
  This study investigated the effects of surface treatments on bond strength between resin cement and differently sintered zirconium-oxide ceramics.
  
  
  METHODS
  220 zirconium-oxide ceramic (Ceramill ZI) specimens were prepared, sintered in two different period (Short=Ss, Long=Ls) and divided into ten treatment groups as: GC, no treatment; GSil, silanized (ESPE-Sil); GSilPen, silane flame treatment (Silano-Pen); GSb, sandblasted; GSbSil, sandblasted+silanized; GSbCoSil, sandblasted+silica coated (CoJet)+silanized; GSbRoSil, sandblasted+silica coated (Rocatech-Plus)+silanized; GSbDSil, sandblasted+diamond particle abraded (Micron MDA)+silanized; GSbSilPen, sandblasted+silane flame treatment+silanized; GSbLSil, sandblasted+Er:Yag (Asclepion-MCL30) laser treated+silanized. The composite resin (Filtek Z-250) cylinders were cemented to the treated ceramic surfaces with a resin cement (Panavia F2.0). Shear bond strength test was performed after specimens were stored in water for 24h and thermo-cycled for 6000 cycles (5-55 °C). Data were statistically analyzed with two-way analysis of variance (ANOVA) and Tamhane's multiple comparison test (α=0.05).
  
  
  RESULTS
  According to the ANOVA, sintering time, surface treatments and their interaction were statistically significant (p<0.05). The highest bond strengths were obtained in GSbCoSil (Ss=13.36/Ls=11.19MPa) and lowest values were obtained in GC (Ss=4.70/Ls=4.62 MPa) for both sinter groups.
  
  
  CONCLUSIONS
  Sintering time may be effective on the bond strength and 30 μm silica coating (Cojet) with silane coupling application technique increased the bond strength between resin cement and differently sintered zirconium-oxide ceramics.
authors.affiliation: Department of Prosthodontics, Faculty of Dentistry, Ondokuz Mayıs University, Samsun, Turkey.
authors.forename: Murat
authors.initials: M
authors.lastname: Yenisey
authors.affiliation: Department of Prosthodontics, Faculty of Dentistry, Ordu University, Ordu, Turkey. Electronic address: dt_dogu@hotmail.com.tr.
authors.forename: Doğu Ömür
authors.initials: DÖ
authors.lastname: Dede
authors.affiliation: Bafra Public Oral Health Center, Samsun, Turkey.
authors.forename: Nergiz
authors.initials: N
authors.lastname: Rona
mesh_terms: D002516:Ceramics; D001840:Dental Bonding / Q000379:methods*; D003799:Dental Stress Analysis; D019279:Resin Cements; D033081:Shear Strength; D012821:Silanes; D012822:Silicon Dioxide; D013499:Surface Properties; D013997:Time Factors; D015040:Zirconium
chemical_list: D019279:Resin Cements; D012821:Silanes; D012822:Silicon Dioxide; D015040:Zirconium; C028541:zirconium oxide
keywords: Bond strength; Resin cement; Sintering; Surface treatment; Zirconium-oxide