Abstract
In the previous report, the shear bond strength of dual-cured composite core resin to the dentin treated with 14 combinations of pretreatment agents, including primer and bonding agent, was measured before thermocycling. In this study, 6 combinations were selected, and the shear bond strengths after thermocycling 5, 000 and 10, 000 times were measured and compared.The following results were obtained:1. When dentin was treated by the conventional method with K-etchant and Clearfil photo bond, the shear bond strength increased after thermocycling in comparison with before thermocycling. After bond strength tests, interface failure between resin and dentin occurred, and SEM imaging showed some spaces between resin tags and dentinal canals.2. When 10% NaOCL gel was used, the bond strength before thermocycling indicated almost the same value as the other pretreatment agents, but increased remarkably after thermocycling.3. When both ED primer and Panavia 21 were used, bond strength before thermocycling showed comparatively high values, but after thermocycling decreased distinctly unless the pretreatment by 10% NaOCl gel was added.4. The combination of ED primer and Clearfil photo bond was evaluated to be the most desirable of all combinations examined. Furthermore, SEM imaging of the dentin after bond strength tests in this combination showed no spaces between resin tags and dentinal canals.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
