Objectives: To compare the bond strength of different types of dual-cure resin cements to metals. Methods: A self-adhesive (3M™ RelyX™ Unicem 2 Automix Self-Adhesive Resin Cement, RXU2), three adhesive (3M RelyX Ultimate Adhesive Resin Cement with 3M Scotchbond™ Universal Adhesive, RXUL; Panavia™ V5 with Clearfil™ Ceramic Primer Plus, Kuraray Noritake, PV5; Calibra® Ceram with Prime&Bond elect®, Dentsply Sirona, CCM) and one universal cement (3M RelyX Universal Resin Cement without/with 3M Scotchbond Universal Plus Adhesive, 3M, RXUV_SA/ RXUV_A). Specimens of titanium (25x12x2mm, grade 2), gold alloy (7x10x2mm, Degulor® M, DeguDent), CoCr alloy (20x7x2mm, Remanium®,Dentaurum) were ground flat, finished and sandblasted with 50 µm alumina. When applicable primers/adhesives were applied to the sandblasted metal surface according to IFU. Steel rods (4 mm diameter) were sandblasted with Rocatec™ Plus (3M), silanized (ESPE™ Sil, 3M) and cemented under standardized pressure (20 g/mm2). After wiping off the excess, glycerin gel was applied, and specimens were stored for 10 min under pressure at 36°C. Shear bond strength was tested after 24h storage at 36°C and 100% relative humidity with a universal testing machine (Zwick Z010; n=6; speed 0.75 mm/min). Data analysis was performed for each metal via One-Way ANOVA (Fisher; p<0.05). Results: See table (values in MPa). Conclusions: In general, all resin cements delivered high bond strength to the metals tested. The self-adhesive resin cement RXU2 performed statistically equivalent to the CCM adhesive resin cement. Universal resin cement RXUV delivered high adhesion performance with and without adhesive primer on all substrates and achieved significantly higher values on Titanium compared to the other resin cements tested.
Division: Meeting:2023 Continental European and Scandinavian Divisions Meetings (Rhodes, Greece) Location: Rhodes, Greece
Year: 2023 Final Presentation ID:0267 Abstract Category|Abstract Category(s):Dental Materials 4: Adhesion