Table 4 Mean values of color change of different filling materials after exposure to tea
Time-line | Micro-hybrid | Nano-hybrid | Glass-ionomer | ||||||
|---|---|---|---|---|---|---|---|---|---|
∆L | ∆a | ∆b | ∆L | ∆a | ∆b | ∆L | ∆a | ∆b | |
Day 7 | − 7.28 ± 1.09 | 8.9 ± 2.68 | 6.28 ± 3.76 | − 6.34 ± 1.02 | − 0.76 ± 0.56 | 5.84 ± 2.82 | − 6.84 ± 1.23 | 1.92 ± 1.92 | − 0.18 ± 2.15 |
Day 30 | − 12.16 ± 1.74 | 11.4 ± 3.82 | 9.94 ± 4.0 | − 9.2 ± 1.2 | 5.0 ± 3.75 | 10.78 ± 3.55 | − 10.96 ± 4.22 | 4.48 ± 1.65 | − 0.5 ± 1.3 |