Table 3.
Reasons and frequency of third molar extraction according to location.
| Causes | Overall | General anesthesia | Intravenous sedation | |
|---|---|---|---|---|
| #18 | Prophylactic | 669 (83.00%) | 559 (82.45%) | 110 (85.94%) |
| Pericoronitis | 26 (3.23%) | 24 (3.54%) | 2 (1.56%) | |
| Dental caries | 28 (3.47%) | 23 (3.39%) | 5 (3.91%) | |
| Orthodontic | 72 (8.93%) | 64 (9.44%) | 8 (6.25%) | |
| Pathological effects on adjacent teeth | 10 (1.24%) | 7 (1.03%) | 3 (2.34%) | |
| Others | 1 (0.12%) | 1 (0.15%) | 0 (0%) | |
| Subtotal | 806 | 678 | 128 | |
| #28 | Prophylactic | 667 (82.65%) | 563 (82.31%) | 104 (84.55%) |
| Pericoronitis | 27 (3.35%) | 22 (3.22%) | 5 (4.07%) | |
| Dental caries | 34 (4.21%) | 27 (3.95%) | 7 (5.69%) | |
| Orthodontic | 68 (8.43%) | 62 (9.06%) | 6 (4.88%) | |
| Pathological effects on adjacent teeth | 11 (1.36%) | 10 (1.46%) | 1 (0.81%) | |
| Others | 0 (0%) | 0 (0%) | 0 (0%) | |
| Subtotal | 807 | 684 | 123 | |
| #38 | Prophylactic | 701 (62.04%) | 588 (62.55%) | 113 (59.47%) |
| Pericoronitis | 275 (24.34%) | 219 (23.30%) | 56 (29.47%) | |
| Dental caries | 29 (2.57%) | 22 (2.34%) | 7 (3.68%) | |
| Orthodontic | 80 (7.08%) | 72 (7.66%) | 8 (4.21%) | |
| Pathological effects on adjacent teeth | 26 (2.30%) | 23 (2.45%) | 3 (1.58%) | |
| Others | 19 (1.68%) | 16 (1.7%) | 3 (1.58%) | |
| Subtotal | 1130 | 940 | 190 | |
| #48 | Prophylactic | 688 (60.99%) | 578 (61.75%) | 110 (57.29%) |
| Pericoronitis | 272 (24.11%) | 216 (23.08%) | 56 (29.17%) | |
| Dental caries | 31 (2.75%) | 24 (2.56%) | 7 (3.65%) | |
| Orthodontic | 84 (7.45%) | 76 (8.12%) | 8 (4.17%) | |
| Pathological effects on adjacent teeth | 22 (1.95%) | 19 (2.03%) | 3 (1.56%) | |
| Others | 31 (2.75%) | 23 (2.46%) | 8 (4.17%) | |
| Subtotal | 1128 | 936 | 192 | |
| Total | Prophylactic | 2725 (70.40%) | 2288 (70.66%) | 437 (69.04%) |
| Pericoronitis | 600 (15.50%) | 481 (14.85%) | 119 (18.8%) | |
| Dental caries | 122 (3.15%) | 96 (2.96%) | 26 (4.11%) | |
| Orthodontic | 304 (7.85%) | 274 (8.46%) | 30 (4.74%) | |
| Pathological effects on adjacent teeth | 69 (1.78%) | 59 (1.82%) | 10 (1.58%) | |
| Others | 51 (1.32%) | 40 (1.24%) | 11 (1.74%) | |
| Subtotal | 3871 | 3238 | 633 |
Duplicate entries are allowed.
#18, maxillary right third molar; #28, maxillary left third molar; #38, mandibular left third molar; #48 mandibular right third molar.