The changes of lightness by VITA classical A1-D4Ⓡ shade checking
| Lightness value | N | ||
|---|---|---|---|
| Base | Type 1 | Type 2 | |
| 9 | 1 | 1 | 3 |
| 10 | 0 | 0 | 0 |
| 11 | 4 | 15 | 29 |
| 12 | 16 | 20 | 20 |
| 13 | 0 | 0 | 0 |
| 14 | 0 | 0 | 0 |
| 15 | 27 | 25 | 26 |
| 16 | 52 | 39 | 22 |
| Mean | 14.82 | 14.13 | 13.28 |
| SD | 1.72 | 2.06 | 2.20 |
| p-value1 | <0.001 | <0.001 | |
| p-value2 | <0.001 |
1p-value by paired t-test base and type 1/2.
2p-value by paired t-test type 1 and type 2.
