Interactive effects of etching and pre-oxidation on porcelain adherence to non-precious alloys: a guided planar shear test study.
Interactive effects of etching and pre-oxidation on porcelain adherence to non-precious alloys were studied by a guided planar shear bond test under non-cantilever conditions. The results indicated that electrolytic etching decreases bond strength, but that oxidation of etched surfaces restores the bond strength level. The results are explained by a hypothesis that depletion of critical elemental species occurs during etching. Potential replenishment of the lost elements during subsequent oxidation, although not confirmed, may assist in improving bond strength.
Murakami
I
I
UMDNJ-New Jersey Dental School, Newark.
Vaidyanathan
J
J
Vaidyanathan
T K
TK
Schulman
A
A
D000134:Acid Etching, Dental; D003722:Dental Alloys / Q000737:chemistry*; D001840:Dental Bonding; D003776:Dental Porcelain / Q000737:chemistry*; D008422:Materials Testing; D010084:Oxidation-Reduction
D003722:Dental Alloys; D003776:Dental Porcelain