Table 2. Means and standard deviations in the baseline values of L*, a*, and b* from different groups, as well as statistical analysis.
| Experimental groups | Baseline values | ||
|---|---|---|---|
| L* | a* | b* | |
| Control | 82.7 ± 2.7A | −1.1 ± 1.2a | 27.1 ± 5.6A |
| Buccal only | 83.8 ± 4.2A | −2.0 ± 1.3a | 25.5 ± 4.8A |
| Lingual only | 87.2 ± 3.6A | −3.0 ± 0.8a | 25.3 ± 4.3A |
| Buccal + lingual | 86.7 ± 3.6A | −2.3 ± 0.9a | 26.7 ± 1.5A |
Different capital and lower-case letter, superscript or not in each column indicate statistically similar means (1-way analysis of variance and Tukey’s test for each column, α = 0.05).