Table 2.
Changes in clinical parameters (mean ± SD) over the 6-month experimental period.
| Parameters | Sites | 1 (Mean ± SD) | 2 (Mean ± SD) | 3 (Mean ± SD) | 1vs2 (p value) † | 1vs3 (p value) † | 2vs3 (p value) † | Statistical inference‡ |
|---|---|---|---|---|---|---|---|---|
| PD | Test Control |
1.50 ± 0.7 1.50 ± 0.9 |
0.92 ± 0.5 0.83 ± 0.4 |
0.83 ± 0.6 0.83 ± 0.4 |
0.08 0.07 |
0.04* 0.07 |
1.00 1.00 |
p: 0.004* p: 0.005* |
| RD | Test Control |
3.00 ± 0.7 3.33 ± 0.9 |
1.08 ± 0.9 0.58 ± 0.8 |
1.00 ± 0.9 0.42 ± 0.8 |
0.00* 0.00* |
0.00* 0.00* |
1.00 0.49 |
p: 0.00* p: 0.00* |
| RW | Test Control |
3.50 ± 0.5 3.58 ± 0.7 |
2.75 ± 1.1 1.25 ± 1.4 |
2.67 ± 1.1 1.08 ± 1.4 |
0.17 0.001* |
0.13 0.002* |
1.00 1.00 |
p: 0.01* p: 0.00* |
| WKG | Test Control |
2.33 ± 0.8 2.08 ± 0.3 |
2.42 ± 0.7 2.83 ± 0.7 |
2.50 ± 0.7 2.83 ± 0.7 |
1.00 0.005* |
0.49 0.005 |
1.00 1.00 |
p: 0.23 p: 0.00* |
| RAL | Test Control |
12.92 ± 2.1 13.42 ± 2.4 |
10.42 ± 2.0 10.08 ± 1.7 |
10.25 ± 2.1 9.92 ± 1.6 |
0.00* 0.00* |
0.00* 0.00* |
0.5 0.5 |
p: 0.00* p: 0.00* |
| TKG | Test Control |
1.25 ± 0.6 1.25 ± 0.4 |
1.67 ± 0.5 2.17 ± 0.4 |
1.67 ± 0.5 2.17 ± 0.4 |
0.05* 0.00* |
0.05* 0.00* |
1.00 1.00 |
p: 0.003* p: 0.00* |
†Repeated Measures Analysis of Variance, ‡Bonferroni post hoc test. 1: baseline, 2: 3 months, 3: 6 months, p < 0.05 is statistically significant*.
PD: Probing depth; RD: Recession depth; RW: Recession width; WKG: Width of keratinized gingiva; RAL: Relative attachment level; TKG: Thickness of keratinized gingiva.