3D surface roughness of glazed e.max CAD. Vertical scale is 220 microns, 10X greater than polished surfaces. The surface roughness is very evident in the excessive quantity of peaks and valleys.
(DeOliveira, August. "I Like Big Abutments and I Cannot Lie". Dentaltown. August 2014: 46 - 50. Print. Images taken by Olympus LEXT OLS4000 3D Measuring Laser Microscope.)