Table 2. ΔL, Δa and Δb values (mean ±SD) of the tested groups.
| OP | PT | WT | WMR | WP | |
|---|---|---|---|---|---|
| ΔL0 -1 | 0.47 ±2.86 | -0.13 ±2.30 | -0.38 ±1.58 | -0.63 ±1.69 | -0.01 ±2.52 |
| ΔL1-2 | -0.88 ±1.75 | 0.45 ±2.77 | 0.05 ±1.19 | 0.21 ±1.23 | 0.90 ±1.55 |
| ΔL0-2 | -0.42 ±2.03 | 0.33 ±2.63 | -0.33 ±0.96 | -0.43 ±1.59 | 0.89 ±3.16 |
| Δa0-1 | -0.83 ±0.69 | -0.73 ±0.92 | -0.35 ±0.57 | -0.70 ±0.60 | -0.58 ±1.06 |
| Δa1-2 | -0.11 ±0.48 | -0.43 ±0.89 | -0.39 ±0.52 | -0.22 ±0.34 | -0.22 ±0.64 |
| Δa0-2 | -0.94 ±0.78 | -1.17 ±0.77 | -0.74 ±0.46 | -0.92 ±0.79 | -0.80 ±0.96 |
| Δb0-1 | -5.53 ±4.26 | -2.19 ±2.27 | -0.69 ±1.68 | -1.30 ±1.67 | -2.84 ±2.39 |
| Δb1-2 | -1.07 ±1.74 | -2.18 ±1.94 | -1.47 ±1.13 | -1.56 ±1.43 | -0.84 ±1.93 |
| Δb0-2 | -6.60 ±4.23 | -4.37 ±2.02 | -2.16 ±1.30 | -2.86 ±1.20 | -3.68 ±1.80 |