Table 6. Changes in probing depth (PD), relative attachment level (RAL), intrabony defect (IBD) depth reduction and % intrabony defect depth reduction at different time intervals with the within-subject effect by repeated-measures ANOVA .
| Source | Type III Sum of Squares | df | Mean Square | F value | P value |
| (PD) | |||||
| Test of Within Individuals Effect | |||||
| Time | 394.342 | 3 | 131.447 | 303.273 | 0.0001* |
| Time x Group | 44.283 | 6 | 7.381 | 17.028 | 0.0001* |
| Error (Time) | 113.125 | 261 | 0.433 | ||
| Test of Between Individuals Effects | |||||
| Group | 109.006 | 2 | 54.503 | 17.664 | 0.0001* |
| Error | 268.442 | 87 | 3.086 | ||
| (RAL) | |||||
| Test of Within Individuals Effect | |||||
| Time | 413.211 | 3 | 137.737 | 185.577 | 0.0001* |
| Time x Group | 50.072 | 6 | 8.345 | 11.244 | 0.0001* |
| Error (Time) | 193.717 | 261 | 0.742 | ||
| Test of Between Individuals Effects | |||||
| Group | 131.017 | 2 | 65.508 | 25.686 | 0.0001* |
| Error | 221.883 | 87 | 2.550 | ||
| (IBD depth) | |||||
| Test of Within Individuals Effect | |||||
| Time | 72.448 | 2 | 36.224 | 997.801 | 0.0001* |
| Time x Group | 27.562 | 4 | 6.890 | 189.797 | 0.0001* |
| Error (Time) | 6.317 | 174 | 0.036 | ||
| Test of Between Individuals Effects | |||||
| Group | 45.414 | 2 | 22.707 | 36.738 | 0.0001* |
| Error | 53.774 | 87 | 0.618 |
*Statistically significant at P<0.05