Table 2.
Mean values of color change (ΔE2 − ΔE8) of the five restorative materials after exposure to the four beverages (n = 5). Color change after 2 (ΔE2), 4 (ΔE4), 6 (ΔE6), and 8 weeks (ΔE8).
| Material | Solution | ΔE2 | ΔE4 | ΔE6 | ΔE8 |
|---|---|---|---|---|---|
| Filtek Z250XT | Tea | 8.9 ± 4.1 A,b | 12.1 ± 4.4 A,b | 24.0 ± 1.9 B,c | 28.3 ± 4.5 B,c |
| Coffee | 10.3 ± 2.2 A,b | 15.0 ± 5.7 A,b | 12.4 ± 4.5 A,b | 15.1 ± 3.0 A,b | |
| Berry juice | 3.5 ± 1.2 A,a | 3.7 ± 1.0 A,a | 4.1 ± 2.3 A,a | 7.7 ± 6.2 A,a | |
| Distilled water | 4.2 ± 6.5 A,a | 4.4 ± 6.3 A,a | 4.8 ± 4.7 A,a | 5.5 ± 7.6 A,a | |
| IPS Empress Direct | Tea | 17.6 ± 8.0 A,b | 22.2 ± 3.4 A,b | 23.6 ± 5.9 A,b | 22.2 ± 6.0 A,b |
| Coffee | 20.9 ± 4.9 A,b | 22.1 ± 2.4 A,b | 20.8 ± 4.8 A,b | 21.4 ± 2.9 A,b | |
| Berry juice | 6.5 ± 3.0 A,a | 7.0 ± 3.1 A,c | 8.1 ± 1.6 A,c | 9.8 ± 1.7 A,a | |
| Distilled water | 2.5 ± 0.6 A,a | 2.2 ± 1.2 A,a | 2.4 ± 0.5 A,a | 10.6 ± 5.5 B,a | |
| G-ænial | Tea | 6.6 ± 0.5 A,a | 10.2 ± 4.0 A,c | 16.5 ± 2.3 B,b | 19.7 ± 4.7 B,b |
| Coffee | 13.8 ± 0.6 A,b | 15.7 ± 1.9 A,b | 18.5 ± 1.1 A,b | 16.6 ± 0.9 A,b | |
| Berry juice | 3.8 ± 0.8 A,a | 5.1 ± 0.8 A,a | 5.9 ± 2.5 A,a | 5.8 ± 1.2 A,a | |
| Distilled water | 2.8 ± 0.5 A,a | 2.9 ± 1.0 A,a | 3.1 ± 0.9 A,a | 1.9 ± 0.7 A,a | |
| Vit-l-escence | Tea | 12.1 ± 6.8 A,b | 12.2 ± 2.4 A,b | 21.6 ± 7.2 B,c | 22.0 ± 6.9 B,c |
| Coffee | 10.1 ± 1.3 A,b | 11.8 ± 2.9 A,b | 17.4 ± 4.0 B,b | 26.9 ± 8.2 C,b | |
| Berry juice | 7.5 ± 4.7 A,b | 6.3 ± 4.3 A,a | 7.5 ± 4.9 A,c | 5.8 ± 3.7 A,a | |
| Distilled water | 1.8 ± 1.1 A,a | 2.0 ± 1.3 A,a | 2.1 ± 0.8 A,a | 4.6 ± 1.8 A,a | |
| Ceram.X | Tea | 5.5 ± 2.6 A,a | 8.7 ± 4.2 A,b | 9.2 ± 2.2 A,b | 7.3 ± 2.0 A,a |
| Coffee | 6.2 ± 3.2 A,a | 7.5 ± 4.2 A,a,b | 9.2 ± 1.8 A,b | 6.7 ± 4.3 A,a | |
| Berry juice | 2.6 ± 0.7 A,a | 2.4 ± 1.5 A,a | 3.2 ± 1.7 A,a | 6.0 ± 2.0 A,a | |
| Distilled water | 3.3 ± 1.5 A,a | 2.9 ± 1.1 A,a | 3.4 ± 1.0 A,a | 7.5 ± 1.3 A,a |
Upper case letters indicate statistically significant difference (p < 0.05) overtime for the same material for a given solution. Lower case letters indicate statistically significant difference (p < 0.05) between solutions at a specific time point for a given material.