Bleaching agent | Enamel thickness | Time | ||
---|---|---|---|---|
∆b1 | ∆b2 | ∆b3 | ||
10% Carbamide Peroxide |
0 mm enamel (D) | *-18.18 (3.61) a | *-24.94 (3.85) a | *-25.20 (5.23) a |
0.5 mm enamel (0.5E) | *-13.87 (2.62) b | *-20.84 (3.38) b | *-25.18 (3.18) a | |
1 mm planned enamel (1E) | *-11.87 (1.65) b | *-18.65 (2.99) bc | *-23.59 (3.04) ab | |
1 mm unplanned enamel (aprismatic) (1AE) | -7.70 (2.70) c | *-14.70 (4.50) c | *-22.49 (3.65) b | |
35% Hydrogen Peroxide |
0 mm enamel (D) | -9.46 (2.07) a | -19.90 (3.13) a | -23.79 (5.68) a |
0.5 mm enamel (0.5E) | -4.47 (1.33) b | -11.97 (2.02) b | -21.86 (2.95) ab | |
1 mm planned enamel (1E) | -4.29 (2.07) b | -11.84 (3.26) bc | -18.57 (2.17) b | |
1 mm unplanned enamel (aprismatic) (1AE) | -5.16 (1.49) b | 10.59 (3.37) c | -19.19 (3.11) b |