|
| Smile evolution after treatment | Total | |||||
|
| Type I | Type II | Type III | Type IV | |||
| Gingival smile before treatment | Type I | 9 | 3 | 2 | 0 | 1 | 6 |
| Type II | 6 | 0 | 4 | 0 | 0 | 4 | |
| Type III | 0 | 0 | 0 | 0 | 0 | 0 | |
| Type IV | 8 | 0 | 0 | 0 | 0 | 0 | |
| Total | 23 | 3 | 6 | 0 | 1 | 10 | |