Objective: The purpose of this study is to evaluate the effect of two differentdentifrices one conventional and one abrasive on the surface roughness and colorstability of two types of resin composites (Nanofilled and Hybrid) after simulatedtooth brushing. Materials and methods: Two commercial resins composite and twodentifrices were selected for this study. For the surface roughness test A Speciallyfabricated Teflon mold was used to prepare 20 standardized specimens the specimenswere subjected to brushing cycles using the wear testing machine as a tooth brushingsimulating Then Ra (F) measurements were carried out. For the color stability test120 bovine incisors teeth had been used in this study as specimens all with astandardized class V cavity preparation then immersed into coffee solutions for oneweek, two weeks and one month. Afterward the specimens were subjected tobrushing cycles using wear testing machine to be submitted to color analysis with thespectrophotometer. Results: in the color stability test Hybrid resin compositeshowed statistically significantly highest mean Ra (F)- Ra (I) value (0.62) μm. WhileNano resin composite showed statistically significantly lowest mean Ra (F)- Ra (I)value (0.34) μm at P_ 0.05 . After one week, two weeks and one month of immersionin coffee, Hybrid resin composite group that has been brushed with conventionaldentifrices showed the statistically significantly highest mean (_E) value. WhileHybrid resin composite group that has been brushed with abrasive dentifrices showedthe statistically significantly lowest mean (_E) value at P< 0.05. Conclusion: Nanoresin composite showed more polishability, wear resistance, glosser surface and morecolor stability than Hybrid resin composite. Abrasive dentifrice cause more surfaceroughness than conventional dentifrice, it also decreases and removes coffee stainsmuch better than conventional dentifrice.