title: Bonding of light-cured glass ionomer cement to polycarbonate resin treated with experimental primers.
abstract: The effect of experimental primers on the shear bond strength of polycarbonate composite resin with light-cured glass ionomer cements was investigated. Mixtures of methylmethacrylate (MMA) with the comonomers 2-hydroxyethyl methacrylate (HEMA), triethyleneglycol methacrylate (TEGDMA), and bisphenol-A-glycidymethacrylate (bisGMA) were used as primers. Polycarbonate composite resin rods of circular cross section and plates were bonded, with and without precured and nonprecured primers, using 2 light-cured glass ionomer cements (commercially available [LC] and experimental [EX]). In addition, commercial polycarbonate composite resin brackets with precured 50% TEGDMA/MMA primer were bonded to etched human enamel with both cements. Shear bond strengths were measured. Results were compared by ANOVA and Scheffe's tests at P = .05. The 30% HEMA/MMA, 50% TEGDMA/ MMA, 10% bisGMA/MMA, and 30% bisGMA/MMA primers produced the higher shear bond strengths (9.5 to 20.8 MPa) with LC and EX to polycarbonate composite resin. The 50% TEGDMA/MMA primer was most effective in improving the shear bond strengths of both LC and EX. Precured 50% TEGDMA/ MMA primer on a commercial resin bracket was effective in providing good shear bond strength to enamel.
authors.affiliation: Department of Orthodontics, Fukuoka Dental College, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Fujita
authors.forename: T
authors.initials: T
authors.lastname: Itoh
authors.forename: M
authors.initials: M
authors.lastname: Matsumoto
authors.forename: A A
authors.initials: AA
authors.lastname: Caputo
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D000538:Aluminum Silicates / Q000737:chemistry*; D000704:Analysis of Variance; D001641:Bicuspid; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding / Q000379:methods* / Q000706:statistics & numerical data; D003743:Dental Enamel / Q000187:drug effects; D005899:Glass Ionomer Cements / Q000737:chemistry*; D006801:Humans; D066298:In Vitro Techniques; D008027:Light; D008422:Materials Testing / Q000379:methods / Q000706:statistics & numerical data; D008855:Microscopy, Electron, Scanning; D016910:Orthodontic Brackets; D011076:Polycarboxylate Cement / Q000737:chemistry*; D013718:Tensile Strength
chemical_list: D000180:Acrylic Resins; D000538:Aluminum Silicates; D003188:Composite Resins; C095451:Fuji Ortho LC; D005899:Glass Ionomer Cements; D011076:Polycarboxylate Cement; C005506:polycarbonate