Bond strength of glass ionomers to coronal and radicular dentin.
A study was conducted to compare the shear bond strength of a glass-ionomer cement and glass-ionomer base to coronal and radicular dentin. Two different glass ionomers were bonded to paired coronal and radicular human dentin surfaces that had received no surface treatment or had been treated passively for 20 seconds with either 40% or 25% polyacrylic acid. When only the effect of the type of dentin surface was considered, glass-ionomer bonds were greater to radicular dentin than to coronal dentin. With one exception, bond strengths to both dentin surfaces were greater with the base ionomer (Ketac-Bond) than with the luting cement (Ketac-Cem). Bond strengths of both glass ionomers were greater after dentin surface treatment with either 25% or 40% polyacrylic acid than with no treatment.
Berry
E A
EA
University of Texas-Houston Health Science Center, Department of Basic Sciences/Oral Biomaterials 77225, USA.
Powers
J M
JM
D000134:Acid Etching, Dental; D000180:Acrylic Resins; D000704:Analysis of Variance; D001840:Dental Bonding; D017220:Dentin-Bonding Agents; D005899:Glass Ionomer Cements; D006801:Humans; D008277:Magnesium Oxide; D008422:Materials Testing; D011076:Polycarboxylate Cement; D016369:Smear Layer; D013718:Tensile Strength; D019228:Tooth Crown; D014092:Tooth Root; D015034:Zinc Oxide
D000180:Acrylic Resins; D017220:Dentin-Bonding Agents; D005899:Glass Ionomer Cements; D011076:Polycarboxylate Cement; C061499:Ketac-Bond; D008277:Magnesium Oxide; C006903:carbopol 940; C040235:Ketac-cem; D015034:Zinc Oxide