Table 3 Degree of color variation (ΔE* and ΔE00) of stained dental enamel model from tooth bleaching formulae set #3 (L1.5 + CD30). L, CD, and CP represented limonene, coconut diethanolamide, and carbamide peroxide, respectively (p < 0.05). CP = 10–15%
Nicotine content (mg/mL) | Before treatment | After treatment with tooth bleaching formulae | ||||||
|---|---|---|---|---|---|---|---|---|
ΔE* | ΔE00 | set #3 + CP5 | set #3 + CP10 | set #3 + CP15 | ||||
ΔE* | ΔE00 | ΔE* | ΔE00 | ΔE* | ΔE00 | |||
6 | 4.18 | 3.78 | 4.03 | 3.68 | 3.92 | 3.57 | 3.69 | 3.36 |
11 | 4.43 | 4.00 | 4.05 | 3.69 | 3.94 | 3.60 | 3.74 | 3.41 |
16 | 4.69 | 4.22 | 4.11 | 3.73 | 3.91 | 3.57 | 3.77 | 3.44 |
21 | 4.97 | 4.56 | 4.06 | 3.67 | 3.90 | 3.53 | 3.72 | 3.40 |