Department of Conservative Dentistry, Division of Dentistry, Graduate of Kyung Hee University, Seoul, Korea.
Copyright © 2010 Korean Academy of Conservative Dentistry
Variolink II showed higher microtensile bond strength than that of adhesive-based resin cements in all film thickness (p < 0.05) but Duo-Link did not show significant difference except control group (p < 0.05).
Microtensile bond strength of composite-based resin cements were decreased significantly according to increasing film thickness (p < 0.05) but adhesive-based resin cements did not show significant difference among film thickness (p > 0.05).
Panavia F showed significantly lower polymerization shrinkage than other resin cements (p < 0.05).
Composite-based resin cements showed significantly higher flexural strength and modulus than adhesive-based resin cements (p < 0.05).
FE-SEM examination showed uniform adhesive layer and well developed resin tags in composite-based resin cements but unclear adhesive layer and poorly developed resin tags in adhesive-based resin cements. In debonded surface examination, composite-based resin cements showed mixed failures but adhesive-based resin cements showed adhesive failures.
Resin cements used in this study
Adhesive system of resin cements used in this study
Two-way ANOVA result between factors of resin cements and film thickness
Microtensile bond strengths for experimental groups (MPa ± SD)
Groups with the same superscripts letters indicate no significant difference (p > 0.05), according to resin cements (small letters) or film thickness (capital letters).
Polymerization shrinkage, flexural strength and flexural modulus of resin cements
Mean values for each test with same subscript were not significantly different (p > 0.05)
Groups with the same superscripts letters indicate no significant difference (p > 0.05), according to resin cements (small letters) or film thickness (capital letters).
Mean values for each test with same subscript were not significantly different (p > 0.05)
