Shear bond strength of a resin-reinforced glass ionomer cement: an in vitro comparative study.
Shear bond strength of Concise (a composite resin adhesive) and Fuji Ortho LC (a light-cured resin-reinforced glass ionomer cement) bonded to extracted teeth was tested under different bonding conditions: (1) Concise/etched/dry (2) Fuji/etched/dry (3) Fuji/etched/wet (4) Fuji/unetched/dry (5) Fuji/unetched/wet. Concise/etched/dry and Fuji/etched/dry groups showed comparable mean shear bond strength (10.5 and 8.2 MPa, respectively); the other three groups had considerably lower values. The difference between Fuji/etched/dry and Fuji/etched/wet was not statistically significant. The site of bond failure was between bracket and adhesive in all etched groups and between adhesive and enamel in the unetched groups. We conclude that (1) enamel surface etching is required for Fuji Ortho LC to achieve optimum bond strength, (2) moisture does not affect bond strength of Fuji Ortho LC significantly.
Chung
C H
CH
University of Pennsylvania, Department of Orthodontics, Philadelphia 19104-6003, USA.
Cuozzo
P T
PT
Mante
F K
FK
D000134:Acid Etching, Dental; D000180:Acrylic Resins / Q000737:chemistry; D000268:Adhesiveness; D000538:Aluminum Silicates / Q000737:chemistry; D000704:Analysis of Variance; D017438:Bisphenol A-Glycidyl Methacrylate; D001840:Dental Bonding / Q000379:methods*; D003743:Dental Enamel; D003799:Dental Stress Analysis; D017220:Dentin-Bonding Agents / Q000737:chemistry; D005899:Glass Ionomer Cements / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D013499:Surface Properties; D013718:Tensile Strength; D014867:Water
D000180:Acrylic Resins; D000538:Aluminum Silicates; D017220:Dentin-Bonding Agents; C095451:Fuji Ortho LC; D005899:Glass Ionomer Cements; D014867:Water; D017438:Bisphenol A-Glycidyl Methacrylate