Table 3 -. Prevalence of external apical root resorption (EARR) according to each tooth.
| Tooth | Total | Degree of final resorption | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| n | (%) | Degree 0 | Degree 1 | Degree 2 | Degree 3 | Degree 0-3 | Degree 4 | |||||||
| n | (%) | n | (%) | n | (%) | n | (%) | n | (%) | n | (%) | |||
| 11 | 121 | 100 | 24 | (19.8) | 19 | (15.7) | 55 | (45.4) | 15 | (12.3) | 113 | (93.4) | 8 | (6.6) |
| 12 | 118 | 100 | 22 | (18.6) | 16 | (13.5) | 56 | (47.4) | 19 | (16.1) | 113 | (95.8) | 5 | (4.2) |
| 21 | 120 | 100 | 26 | (22.1) | 20 | (16.6) | 51 | (42.5) | 15 | (12.5) | 112 | (93.3) | 8 | (6.6) |
| 22 | 118 | 100 | 26 | (22.0) | 18 | (15.2) | 49 | (41.5) | 20 | (16.9) | 113 | (95.7) | 5 | (4.2) |
| 31 | 120 | 100 | 43 | (35.8) | 41 | (34.2) | 30 | (25.0) | 6 | (5.0) | 120 | 100 | 0 | (0.0) |
| 32 | 120 | 100 | 53 | (44.1) | 33 | (27.5) | 30 | (25.0) | 3 | (2.5) | 119 | (99.2) | 1 | (0.8) |
| 41 | 121 | 100 | 49 | (40.5) | 40 | (33.0) | 27 | (22.3) | 5 | (4.1) | 121 | 100 | 0 | (0.0) |
| 42 | 121 | 100 | 60 | (49.6) | 29 | (23.9) | 27 | (22.3) | 4 | (3.3) | 120 | (99.2) | 1 | (0.8) |
| Total | 959 | 100 | 303 | (31.6) | 216 | (22.5) | 325 | (33.9) | 87 | (9.0) | 931 | (97.1) | 28 | (2.9) |