title: Repair bond strength of composite resin to sandblasted and laser irradiated Y-TZP ceramic surfaces.
abstract: This study investigated the effects of different surface treatments on the repair bond strength of yttrium-stabilized tetragonal zirconia polycrystalline ceramic (Y-TZP) zirconia to a composite resin. Sixty Y-TZP zirconia specimens were prepared and randomly divided into six groups (n = 10) as follows: Group 1, surface grinding with Cimara grinding bur (control); Group 2, sandblasted with 30 µm silica-coated alumina particles; Group 3, Nd:YAG laser irradiation; Group 4, Er,Cr:YSGG laser irradiation; Group 5, sandblasted + Nd:YAG laser irradiation; and Group 6, sandblasted + Er,Cr:YSGG laser irradiation. After surface treatments, the Cimara(®) System was selected for the repair method and applied to all specimens. A composite resin was built-up on each zirconia surface using a cylindrical mold (5 × 3 mm) and incrementally filled. The repair bond strength was measured with a universal test machine. Data were analyzed using a one-way ANOVA and a Tukey HSD test (p = 0.05). Surface topography after treatments were evaluated by a scanning electron microscope (SEM). Shear bond strength mean values ranged from 15.896 to 18.875 MPa. There was a statistically significant difference between group 3 and the control group (p < 0.05). Also, a significant increase in bond strength values was noted in group 6 (p < 0.05). All surface treatment methods enhanced the repair bond strength of the composite to zirconia; however, there were no significant differences between treatment methods. The results revealed that Nd:YAG laser irradiation along with the combination of sandblasting and Er,Cr:YSGG laser irradiation provided a significant increase in bond strength between the zirconia and composite resin.
authors.affiliation: Department of Prosthetic Dentistry, Faculty of Dentistry, Akdeniz University, Antalya, Turkey.
authors.forename: Omer
authors.initials: O
authors.lastname: Kirmali
authors.affiliation: Department of Restorative Dentistry, Faculty of Dentistry, Akdeniz University, Antalya, Turkey.
authors.forename: Çağatay
authors.initials: Ç
authors.lastname: Barutcigil
authors.affiliation: Department of Prosthetic Dentistry, Faculty of Dentistry, Akdeniz University, Antalya, Turkey.
authors.forename: Mehmet Mustafa
authors.initials: MM
authors.lastname: Ozarslan
authors.affiliation: Department of Prosthetic Dentistry, Faculty of Dentistry, Akdeniz University, Antalya, Turkey.
authors.forename: Kubilay
authors.initials: K
authors.lastname: Barutcigil
authors.affiliation: Department of Restorative Dentistry, Faculty of Dentistry, Akdeniz University, Antalya, Turkey.
authors.forename: Osman Tolga
authors.initials: OT
authors.lastname: Harorlı
mesh_terms: D000327:Adsorption; D002516:Ceramics / Q000737:chemistry*; D003188:Composite Resins / Q000737:chemistry*; D053844:Lasers, Solid-State; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D033081:Shear Strength; D013499:Surface Properties; D015019:Yttrium / Q000737:chemistry*; D015040:Zirconium / Q000737:chemistry*
chemical_list: D003188:Composite Resins; C499362:yttria stabilized tetragonal zirconia; D015019:Yttrium; D015040:Zirconium
keywords: CoJet sandblasting; SEM; Y-TZP zirconia; laser irradiations; repair bond strength