Table 2.
The Kruskal–Wallis test was used to compare the differences between CIEL∗a∗b∗ values and color discrepancies of different groups.
| Group | ΔL |
Δa |
Δb |
ΔE |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | SD | P value | Mean | SD | P value | Mean | SD | P value | Mean | SD | P value | ||
| Cervical third | A | −8.10 | 3.55 | 0.9612 | 2.50 | 0.72 | 0.90 | 4.07 | 2.94 | 0.8948 | 9.69 | 3.89 | 0.8490 |
| E | −8.30 | 3.98 | 2.58 | 0.86 | 4.73 | 5.20 | 10.90 | 4.32 | |||||
| V | −7.82 | 3.18 | 2.72 | 0.93 | 5.07 | 3.94 | 10.04 | 4.31 | |||||
| Middle third | A | −1.52 | 0.87 | 0.4843 | 3.03 | 0.59 | 0.35 | 5.60 | 3.00 | 0.5671 | 6.79 | 2.50 | 0.2778 |
| E | −3.28 | 2.22 | 3.42 | 0.43 | 7.18 | 4.33 | 9.15 | 3.51 | |||||
| V | −1.68 | 4.29 | 3.35 | 0.97 | 6.50 | 2.50 | 8.51 | 2.49 | |||||
| Incisal third | A | 3.53 | 3.14 | 0.8102 | 3.03 | 1.29 | 0.70 | 2.25 | 3.48 | 0.2026 | 6.62 | 1.78 | 0.1956 |
| E | 4.12 | 3.19 | 3.33 | 0.90 | 3.87 | 3.62 | 7.69 | 2.18 | |||||
| V | 4.70 | 3.52 | 3.48 | 1.21 | 5.18 | 3.72 | 8.92 | 2.35 | |||||
A, AUO Display Plus; E, Canon single-lens reflex camera with eLAB's polar eyes filter; V, VITA Easyshade V; SD, standard deviation.