Table 4.
Intergroup and intragroup comparison of a* values obtained from groups
| a* Values | |||||||
|---|---|---|---|---|---|---|---|
| n/N | Baseline a0 | Bleaching a1 | Remineralization a2 | Staining a3 | T-statistic | P** | |
| 1A | 10/100 | 1 (0.3–1.4)a | 0.67 (0–1.1)b | 0.57 (0.1–1.1)b | 0.9 (0.1–1.2)aB | 20.091 | < 0.001 |
| 1B | 10/100 | 0.9 (0.6–1.2)a | 0.7 (0.5–1)b | 0.63 (0.4–0.7)b | 0.93 (0.7–1.2)aB | 27.551 | < 0.001 |
| 1C | 10/100 | 0.83 (0.6–1)c | 0.63 (0.5–0.9)ab | 0.5 (0.4–0.8)b | 0.7 (0.5–0.9)acA | 25.347 | < 0.001 |
| 1D | 10/100 | 0.8 (0.6–0.9)a | 0.67 (0.5–0.8)b | 0.6 (0.4–0.7)b | 0.8 (0.5–0.9)aAB | 26.375 | < 0.001 |
| 1E | 10/100 | 0.8 (0.6–0.9)c | 0.53 (0.5–0.8)ab | 0.48 (0.4–0.7)b | 0.63 (0.4–0.8)acA | 19.469 | < 0.001 |
| 2A | 10/100 | 0.8 (0.6–1.3)a | 0.63 (0.5–1.1)b | 0.52 (0.4–0.9)b | 0.9 (0.7–1.2)aB | 27.120 | < 0.001 |
| 2B | 10/100 | 0.8 (0.6–1.1)a | 0.6 (0.5–0.9)b | 0.53 (0.4–0.8)b | 0.9 (0.7–1)aB | 26.082 | < 0.001 |
| 2C | 10/100 | 0.7 (0.6–0.9)c | 0.58 (0.5–0.8)ab | 0.47 (0.4–0.7)b | 0.63 (0.4–0.8)acA | 19.469 | < 0.001 |
| 2D | 10/100 | 0.7 (0.6–0.9)c | 0.53 (0.5–0.8)ab | 0.49 (0.4–0.6)b | 0.6 (0.5–0.9)acA | 25.250 | < 0.001 |
| 2E | 10/100 | 0.73 (0.6–0.9)c | 0.59(0.5–0.8)ab | 0.5 (0.4–0.7)b | 0.67 (0.4–0.8)acA | 15.866 | 0.001 |
| T-statistic | 8.348 | 7.205 | 14.202 | 27.898 | |||
| P* | 0.499 | 0.616 | 0.115 | 0.001 | |||
*Kruskal Wallis test, Dunn test; **Friedman test, Dunn test; data are expressed as median (min-max); a-c: There is no difference between those with the same letter in each group row; A-B: There is no difference between groups having the same letter in each column
*1A: Office-Control, 2A: Home-Control, 1B: Office-APF, 2B: Home-APF, 1C: Office-CPP-ACPF, 2C: Home-CPP-ACPF, 1D: Office-CaGP, F, 2D: Home-CaGP, F, 1E: Office-HAp, F, 2E: Home-HAp, F