Mean | Std. deviation | N | |
Initial thickness | 0.70 | 0.13 | 16 |
Thickness 1 week | 1.12 | 1.84 | 16 |
Thickness 3 months | 0.62 | 0.11 | 16 |
Thickness 12 months | 0.58 | 0.09 | 16 |