Figure 4: Profilometry images of archwires: (a) Subgroup A1 specimen image, (b) subgroup B1 specimen image, (c) subgroup C1 specimen image, (d) subgroup A2 specimen image, (e) subgroup B2 specimen image, (f) subgroup C2 specimen image, (g) subgroup A3 specimen image, (h) subgroup B3 specimen image, (i) subgroup C3 specimen image