theFig. 8 – Cross-section SEM photomicrographs of the respective cement-composite CAD–CAM block interface. Except ShofuBlock HC, all composite CAD–CAM blocks revealed a tight interface with the cement having infiltrated into the roughenedsandblasted surface of the composite blocks. However, the cement could not infiltrate into the cracks located deeper in theblocks and more remote from the surface (c,f,l,o: arrows). Shofu Block HC showed several voids at the interface with thecement (n,o), while the cement had failed to infiltrate into the cracks that had propagated along the filler particles.