Profilometry Humans 4 Surface Properties 4 Surface roughness 4 human 4 surface property 4 Citric Acid 3 Tooth Erosion 3 citric acid 3 tooth disease 3 Dental Enamel 2 Dental Polishing 2 Enamel 2 Enamels 2 Erosion 2 Hardness 2 In Vitro Techniques 2 Microscopy, Confocal 2 Time Factors 2 Tooth wear 2 confocal microscopy 2 diagnostic imaging 2 enamel 2 hardness 2 in vitro study 2 pathology 2 procedures 2 time factor 2 tooth brushing 2 'current 1