Fig. 5From: The effect of sandblasting versus acid etching on the surface roughness and biaxial flexural strength of CAD/CAM resin-matrix ceramics (In vitro study)Representative SEM micrographs of Lava ultimate samples after different surface treatments: a control, b sandblasting, c HF acid etching. SEM images (left) at 300 × magnification and (right) at 4000 × magnificationBack to article page