| Last treatment | Sex | Total | |
| Male | Female | ||
| Extraction | 20 (83.3%) | 4 (16.7%) | 24 (100%) |
| Filling | 10 (76.9%) | 3 (23.1%) | 13 (100%) |
| Scaling and polishing | 32 (78.0% | 9 (22.0%) | 41 (100%) |
| Others | 32 (71.1%) | 13 (28.9%) | 45 (100%) |
| Total | 94 (76.4%) | 29 (23.6) | 123 (100.0%) |