Purpose: To evaluate and compare the surface roughness (SR), weight loss and volume loss of three monolithic ceramics; monolithic zirconia functional explore (f.explore), lithium disilicate glass ceramic (IPS.e.max CAD), and lithium silicate (Obsidian) and their wear effect on the natural enamel. Materials and MethodsTwenty four ceramic discs and twenty four natural tooth antagonists were used.Sam...