| % at T0 | % at T1 | gingival thickness at T0 | gingival thickness at T1 | Difference(T1-T0) |
---|---|---|---|---|---|
 ≤ 1 mm | 65.3 | 35.70 | 0.73 ± 0.17 | 1.08 ± 0.33 | 0.36 ± 0.32 |
 > 1 mm | 34.7 | 64.30 | 1.26 ± 0.22 | 1.44 ± 0.36 | 0.18 ± 0.31 |
P |  |  |  |  |  < 0.001*** |