EVALUATION OF WEAR - ENAMEL OPPOSING 3 CERAMIC MATERIALS AND A GOLD ALLOY

Statement of problem. The wear of human enamel and of the restorative material is often a critical concern when selecting a restorative mate rial for any given clinical restorative treatment. Purpose. This in vi tro wear investigation evaluated three ceramic restorative materials a nd one type III gold (the control) opposing enamel. Material and Metho ds. The area of enamel lost at specified time intervals, the stylus ar ea lost, and the combined stylus and enamel vertical height lost were evaluated. Results. Enamel wear opposing one type III gold was statist ically similar to that of Dicor MGC, which was lower than that of Vita Mark II and IPS Empress, which were also statistically similar in val ue. Conclusions. The total vertical height lost from the type III gold specimens and opposing enamel was statistically lower than that of Di cor MGC and IPS Empress (alpha < 0.05).