title: Shear bond strength of composite resin cements to lithium disilicate ceramics.
abstract: The aim of this study was to evaluate the shear bond strength of different commercial composite resin cement systems to lithium disilicate all-ceramic substrate. Five adhesive resin cement systems Panavia 21 and Panavia F (Kuraray), Variolink 2 (Ivoclar-Vivadent), RelyX Unicem Applicap and RelyX ARC (3M ESPE) were used on all-ceramic (IPS Empress 2; Ivoclar-Vivadent) substrate. Shear bond strength of adhesive resin cement to substrate was tested after thermocycling, or without thermocycling (n = 10). Substrate surfaces of the specimen after loading were SEM microscopically examined. The highest bond strengths in water stored conditions were obtained with RelyX ARC (28.7 +/-3.9 MPa), while in thermocycled conditions the highest bonding values were obtained with Variolink 2 (23.2 +/- 7.5 MPa). The lowest values in both water stored (5.8 +/- 4.0 MPa) and thermocycled (2.4 +/- 2.9 MPa) conditions were obtained with Panavia 21. Shear bond strengths appeared to be affected significantly by thermocycling (anova, P < 0.05). It was concluded that there were significant differences between the bond strengths of adhesive resin cements to lithium disilicate substrate.
authors.affiliation: Department of Prosthodontics, School of Dentistry, Ege University, Izmir, Turkey. kumbuloglu@hotmail.com
authors.forename: O
authors.initials: O
authors.lastname: Kumbuloglu
authors.forename: L V J
authors.initials: LV
authors.lastname: Lassila
authors.forename: A
authors.initials: A
authors.lastname: User
authors.forename: S
authors.initials: S
authors.lastname: Toksavul
authors.forename: P K
authors.initials: PK
authors.lastname: Vallittu
mesh_terms: D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D002516:Ceramics / Q000737:chemistry*; D001840:Dental Bonding / Q000379:methods*; D003776:Dental Porcelain / Q000737:chemistry; D006801:Humans; D008422:Materials Testing / Q000295:instrumentation / Q000379:methods; D008855:Microscopy, Electron, Scanning / Q000379:methods; D010710:Phosphates / Q000737:chemistry; D011092:Polyethylene Glycols / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry*
chemical_list: C092621:Ivoclar Universal Cement; C093719:Panavia TPN-S; C438843:Panavia-Fluoro; D010710:Phosphates; D011109:Polymethacrylic Acids; C483701:Rely X Unicem; C462240:RelyX ARC; D019279:Resin Cements; C493120:lithia disilicate; D003776:Dental Porcelain; C103502:Variolink; D011092:Polyethylene Glycols; D017438:Bisphenol A-Glycidyl Methacrylate