| Etiological factors | Cases | Percentage |
| Wearing poorly fitting dental prostheses | 9 | 27.27 |
| Presence of tartar blocks (tartaric gingivitis) | 8 | 24.24 |
| Tartar blocks + rootstock | 5 | 15.15 |
| Partial indentation not rehabilitated | 5 | 15.15 |
| Foreign body in the alveolar bone (post-extraction) | 3 | 9.10 |
| Congenital formation | 2 | 6.06 |
| Pregnancy | 1 | 3.03 |
| Total | 33 | 100.00 |