Table 2. Effect of different treatments on enamel color parameters.
| Groups | ΔL | Δa | Δb | ΔE |
|---|---|---|---|---|
| DDW | −0.32 (1.10) | −0.41 (0.47) | −1.23 (0.85) | 1.85 (0.61)a |
| BG | −0.12 (1.41) | −0.49 (0.36) | −0.70 (0.84) | 1.59 (0.94)a |
| HP | 4.04 (2.91) | −0.83 (0.46) | −2.56 (1.57) | 5.54 (1.83)b |
| BG before HP | 3.79 (1.71) | −0.84 (0.57) | −3.01 (1.21) | 5.08 (1.71)b |
| BG after HP | 3.82 (2.20) | −0.79 (0.75) | −2.87 (2.05) | 5.32 (2.10)b |
| BG during HP | 3.24 (2.93) | −0.55 (1.22) | −2.74 (1.78) | 5.15 (2.06)b |
BG, bioglass; DDW, distilled deionized water; HP, hydrogen peroxide.
Mean values (standard deviations).
Different lower case superscript letters (a-b) denote statistical significant difference for ΔE in different groups (P<0.05).