Table 1.
Degree of color variation (ΔE* and ΔE00) of stained dental enamel model from tooth bleaching formulae set #1 (L0.5 + CD10). 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 #1 + CP5 | set #1 + CP10 | set #1 + CP15 | ||||
| ΔE* | ΔE00 | ΔE* | ΔE00 | ΔE* | ΔE00 | |||
| 6 | 4.18 | 3.78 | 4.15 | 3.75 | 4.03 | 3.65 | 3.95 | 3.59 |
| 11 | 4.43 | 4.00 | 4.31 | 3.88 | 4.07 | 3.69 | 3.90 | 3.55 |
| 16 | 4.69 | 4.22 | 4.51 | 4.08 | 4.14 | 3.75 | 4.01 | 3.64 |
| 21 | 4.97 | 4.56 | 4.39 | 3.97 | 4.17 | 3.77 | 3.95 | 3.61 |