Polishing of zirconia reinforced lithium silicate press ceramics . An in vitro study

The aim of the study is to evaluate the possibilities for polishing of zirconia reinforced lithium silicate ceramics after making corrections on the glazed ceramic surface. The studied subjects were 20 test samples made of lithium silicate press ceramics. They were divided into 4 groups according to the method of processing and polishing (different grit size of the diamond burs and type of polishing materials). The samples were examined with an atomic force microscope. After polishing with diamond paste, the surface became smoother compared to the treatment of the surface with a polishing kit alone. There was a difference in the topography of the ceramic surface before and after treatment. Despite the existence of various polishing protocols, maximum smoothness can only be achieved by re-glazing. Experimental article (J Int Dent Med Res 2021; 14(2): 485-488)