Research Article

Evaluation of Surface Microhardness and Abrasion Resistance of Two Dental Glass Ionomer Cement Materials after Radiant Heat Treatment

Table 3

Mean values and standard deviations of surface roughness (Ra, μm) of the covered and uncovered surface of the specimens of the experimental groups of the study after abrasive procedure. The same uppercase superscripts in columns indicate no significant differences between materials . The same lowercase superscripts indicate no significant differences between treatments .

MaterialControl% Ra increaseRadiant heat% Ra increase
Baseline surfaceAbrasive surfaceBaseline surfaceAbrasive surface

Ketac Fil Plus Aplicap17.6%
IonoStar
Molar
4.8%