The effect of milling and postmilling procedures on the surface roughness of CAD/CAM materials

ConclusionsThe polishing methods were able to reduce roughness to baseline values, except for lithium‐based ceramics. Glaze reduced significantly the roughness of lithium‐based ceramics without a difference from the baseline. SEM and AFM images revealed that glazed surfaces are smoother than polished surfaces.
CLINICAL SIGNIFICANCEAll hard‐milling CAD/CAM materials, that is, fully sintered, should be only hand polished. The glaze step can be suppressed resulting in time saving. However, the glaze step in soft‐milling lithium disilicate is imperative.

Source: Journal of Esthetic and Restorative Dentistry - July 8, 2017 Category: Dentistry Authors: Eduardo Gon çalves Mota, Laura Nunes Smidt, Lisiane Martins Fracasso, Luiz Henrique Burnett, Ana Maria Spohr Tags: RESEARCH ARTICLE Source Type: research