Department of Conservative Dentistry, College of Dentistry, Chosun University, Korea.
Copyright © 2003 Korean Academy of Conservative Dentistry
Shear bond strength for OU was significantly lower than that of other groups(p<0.05). No significant difference was founded among SB, TY, and LP.
Failure modes to dentin showed adhesive and mixed for SB, TY, and LP, but them for OU showed adhesive in all spceimens.
Dentin-resin interface showed close adaptation for SB, TY, and LP, but it showed gap for OU.
The hybrid layers for TY, LP, OU were thinner than that of SB. Adhesive layers were observed between composite and hybrid layer, which were 5 µm thick for TY and 10 µm thick for OU.
*: there was statistically significant difference among groups by Tukey's test (p<0.05).
*: there was statistically significant difference among groups by Tukey's test (p<0.05).