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.
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)
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)