Repair bond strength of a new self-adhesive composite resin to three different resin-matrix ceramic CAD-CAM materials.

ABSTRACT

This study aimed to evaluate the shear bond strength of two flowable composite resins to resin-matrix ceramic CAD-CAM materials.Fifty-four plates obtained from Lava Ultimate (LU), Cerasmart (CS), and Vita Enamic (VE) CAD-CAM blocks were assigned to nine groups N0 Nova Compo SF (NCSF), N1 Silane/Single Bond Universal (SBU)/NCSF, N2 SBU/NCSF, N3 Silane/G-Premio Bond (GPB)/NCSF, N4 GPB/NCSF, G1 Silane/SBU/G-aenial Universal Injectable Composite (GUIC), G2 SBU/GUIC, G3 Silane/GPB/GUIC, G4 GPB/GUIC. After the repair procedures, shear bond strength values were analyzed. Silane pre-application decreased bond strength in most LU and CS groups but increased it in VE. NCSF performed better than GUIC in all CAD-CAM's with similar adhesive protocols. SBU in combination with NSCF had the highest bond strength among all repair procedures in LU and CS. Silane-containing universal adhesives in combination with self-adhesive resin composites should be used to repair resin-matrix ceramic materials.