Table 1. Means and standard deviations in parentheses for translucency parameter of each group as a function of the amount of thickness reduction.
| Subgroup | Group | ||||
|---|---|---|---|---|---|
| I | II | III | IV | V | |
| 0 | 2.76 (0.39)a | 2.72 (0.31)a | 2.43 (0.10) | 2.27 (0.19) | 2.29 (0.13) |
| 1 | 2.84 (0.13)a | 2.48 (0.29)a | 2.93 (0.22)a | 2.93 (0.18)a | 2.90 (0.21)a |
| 2 | 3.12 (0.20)a,b | 3.34 (0.09)b,c | 2.99 (0.13)a | 3.10 (0.14)a,b | 3.07 (0.08)a |
| 3 | 3.24 (0.06)b | 3.27 (0.12)b | 3.31 (0.08)a,b | 3.49 (0.22)b,c | 3.30 (0.24)a,b |
| 4 | 3.71 (0.10)c | 3.65 (0.09)c,d | 3.71 (0.12)b | 3.81 (0.17)c,d | 3.60 (0.12)b,c |
| 5 | 4.01(0.08)c,d | 4.00 (0.13)d,e | 3.44 (0.35)b | 3.48 (0.23)b,c | 3.89 (0.11)c,d |
| 6 | 4.19 (0.09)d,e | 4.18 (0.11)e,f | 4.28 (0.16)c | 4.20 (0.08)d,e | 4.20 (0.09)d |
| 7 | 4.57 (0.18)e,f | 4.44 (0.25)f | 4.48 (0.22)c,d | 4.60 (0.22)e | 4.64 (0.22)e |
| 8 | 4.97 (0.16)g,h | 4.98 (0.18)g | 4.77 (0.27)d,e | 5.02 (0.27)f | 4.77 (0.32)e |
| 9 | 4.82 (0.18)f,g | 5.03 (0.33)g | 5.18 (0.41)e,f | 5.04 (0.35)f | 4.73 (0.50)e |
| 10 | 5.21 (0.58)h | 5.04 (0.41)g | 5.20 (0.48)f | 5.34 (0.52)f | 5.19 (0.51) |
· Means with the same superscript letter in each column are not significantly different from each other based on multiple comparison Scheffé test (P > .05).