To compare the shear bond strength of various self-etch and dual cure resin cements to Premise facial and primary-dentin indirect composite.
Sixty discs of Premise indirect composite (SDS/Kerr), d=5 mm, were fabricated and mounted in acrylic; thirty facial dentin composite and thirty primary dentin composite. The discs were polished using 320 grit paper, followed by Rocatec micro-abrasion and silane application. Cement cylinders, d=2.5, were bonded to an equal number of primary dentin and facial dentin composite discs according to the manufacturer’s instructions. The cements were Maxcem Elite (Kerr), Rely X Unicem Applicaps (3M ESPE), Clearfil Esthetic Cement with DC bond (Kuraray America), Rely X ARC with Single Bond (3M ESPE), Panavia F 2.0 (Kuraray America), and Nexus 3 (Kerr). Immediately after bonding, the specimens were immersed in water at 37°C for 24 hours. They were debonded using an Instron universal testing machine and shear bond strengths were calculated in Megapascals (MPa). The data were analyzed using a two-way ANOVA and Tukey post hoc test at 0.05 level of significance.
Means and standard deviations of shear bond strength (MPa) are listed below:
Cement Premise Primary-Dentin Premise Facial-Dentin
There was no significant difference in shear bond strengths among the six cements (p=0.95), nor between Premise facial and primary-dentin bond strengths (p=0.40).
The use of Premise facial or primary-dentin indirect composite does not result in significantly different resin to cement shear bond strengths, nor is there a significant difference between the six cements.
Keywords: Adhesion, Biomaterials, Cements, Composites and Dental materials
See more of: Dental Materials 1: Adhesion - Bond Strength Testing and Mechanisms