Table 2. Means and standard deviations for ΔEab values of the light-cured resin cements.
| Resin cement | Shade | ΔEab | ||||||
|---|---|---|---|---|---|---|---|---|
| 1 h | 24 h | 30 days | 180 days | 1 year | 2 years | 3 years | ||
| NX3 Light-cure | Clear | 0.46 ± 0.19 aA | 1.29 ± 0.28 aA | 3.43 ± 1.23 aB | 4.61 ± 1.14 bB | 3.62 ± 0.78 aB | 3.66 ± 0.97 aB | 3.78 ± 1.33 aB |
| White | 0.80 ± 0.24 aA | 0.92 ± 0.27 aA | 3.04 ± 0.87 aB | 3.13 ± 0.79 abB | 2.83 ± 0.92 aB | 4.03 ± 0.95 aB | 4.09 ± 1.21 aB | |
| Yellow | 0.49 ± 0.29 aA | 0.73 ± 0.58 aA | 2.11 ± 0.27 aAB | 2.48 ± 0.35 aB | 2.83 ± 0.34 aB | 4.24 ± 0.45 aC | 3.73 ± 0.93 aBC | |
| AllCem Veneer (ACV) | Trans | 0.57 ± 0.26 aA | 1.45 ± 0.39 aAB | 2.16 ± 1.41 aABC | 3.32 ± 0.81 abCD | 3.92 ± 1.39 aD | 3.38 ± .73 aCD | 2.85 ± 1.05 aBCD |
| E-Bleach M | 0.65 ± 0.48 aA | 1.02 ± 0.45 aA | 1.87± 0.30 aAB | 3.96 ± 0.53 abC | 3.76 ± 0.50 aC | 2.82 ± 0.95 aBC | 3.77 ± 0.91 aC | |
| A1 | 0.69 ± 0.47 aA | 1.46 ± 0.80 aAB | 2.17 ± 1.02 aABC | 3.49 ± 0.97 abC | 2.97 ± 1.49 aBC | 3.05 ± 0.54 aBC | 3.01 ± 0.70 aBC | |
In each row, values followed by the same capital letters are statistically similar (p > 0.05). In each column, values followed by the same lowercase letters are statistically similar (p > 0.05).