Tooth AbrasionDentifricesToothbrushingDental PolishingTooth WearDental Restoration WearTooth ErosionOptical DevicesToothpastesCarbon Compounds, InorganicAir Abrasion, DentalSilicon CompoundsSilicon DioxideMaterials TestingMethacrylatesDental EnamelSurface PropertiesAluminum OxideHardnessDental MaterialsWoodDental PorcelainMicroscopy, Electron, ScanningComposite ResinsDental Stress AnalysisAcoustics