Abstract
The present study aims to evaluate the effect of the application of different surface sealants on the surface roughness and Knoop microhardness of PMMA polymer for CAD/CAM in thermocycling and erosion challenge. Ninety specimens of PMMA polymers for CAD/CAM in 10×10×3 (±0.5) mm dimensions will be distributed in four factors under analysis: (1) prefabricated polymer block (PMMA) for the CA…