Aesthetic brackets 105 discovery® pearl Fascinatingly natural. FDI System R 18 17 16 15 14 13 12 11 21 22 23 24 25 26 27 28 L 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 48 47 46 45 44 43 42 41 31 32 33 34 35 36 37 38