Table 4. Intragroup comparison of primary and secondary outcome variable between baseline and six months in PRF group.
| Parameters/Time points | Baseline (mean ± SD) |
Six Months (mean ± SD) |
Z-value |
p
-Value
( p ≤ 0.05) |
|---|---|---|---|---|
| *( p ≤ 0.05) statistically significant. | ||||
| Papillary height (mm) | 2.40 ±.97 | 3.10 ± 1.10 | 2.646 | 0.008* |
| Black triangle height (mm) | 3.40 ± 1.17 | 2.50 ± 1.08 | 2.714 | 0.007* |
| Visual analog score–dentist | 0.93 ± 0.62 | 4.98 ± 2.31 | 2.807 | 0.005* |
| Visual analog score–patient | 3.00 ± 1.76 | 5.70 ± 2.31 | 2.714 | 0.007* |