Effect of different surface treatments of CAD/CAM polymer-infiltrated-ceramic-network material on microshear bond strength of two different formulations of repair resin composites

Abstract

This in-vitro study was designed to evaluate the microshear bond strength of two different types of resin composite (nanohybrid resin composite and nanohybrid ormocer) as a repair material to polymer-infiltrated-ceramic-network (Vita Enamic) blocks after different surface treatments to the polymer-infiltrated-ceramic-network block surface. A total of twelve slices were prepared out of VITA ENAMIC CAD/CAM ceramic blocks using diamond discs under continuous water irrigation. The slices were polished in a circular motion using silicon carbide papers. After the polishing procedures, the substrate surfaces were ultrasonically cleaned in distilled water for 30 s and then dried. Then, each disc was mounted in an acrylic mold with the disc surface flushing with the acrylic mold surface.