Shear bond strengths of a single-step bonding system to enamel and dentin.
An experimental primer was developed as a single-step bonding system for resin-modified glass ionomer cements (GIC). Efficacy of this primer on adhesion of resin-modified GICs and resin composite to enamel and dentin was evaluated by shear bond test and SEM observation. Good bond strengths to enamel were obtained (> 11 MPa), whereas significantly low bond strengths to dentin were obtained using a single coat of the primer. However, double-coating improved the bond strengths to dentin (> 8 MPa). SEM observations indicated that the primer functioned as a mild conditioner to remove the smear layer on enamel or dentin surfaces. A hybrid layer was observed at the cross-sectional view of the GIC/dentin interface. These findings suggested that good adhesion to enamel and dentin could be achieved using a single-step bonding system.
Nikaido
T
T
Department of Operative Dentistry, Faculty of Dentistry, Tokyo Medical and Dental University, Japan.
Nakajima
M
M
Higashi
T
T
Kanemura
N
N
Pereira
P N
PN
Tagami
J
J
D017438:Bisphenol A-Glycidyl Methacrylate; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding / Q000379:methods*; D003743:Dental Enamel; D003804:Dentin; D017220:Dentin-Bonding Agents; D005899:Glass Ionomer Cements / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates; D008855:Microscopy, Electron, Scanning; D019279:Resin Cements
D003188:Composite Resins; D017220:Dentin-Bonding Agents; D005899:Glass Ionomer Cements; D008689:Methacrylates; D019279:Resin Cements; C082616:Clearfil CR; D017438:Bisphenol A-Glycidyl Methacrylate; C005044:hydroxyethyl methacrylate