Table 3.
Localization of resorption lesion and horizontal and vertical root resorption at baseline (T0) and follow-up (T1) on incisors with canine-induced root resorption (CIRR).
| Baseline (T0) | Follow-up (T1) | |||||
|---|---|---|---|---|---|---|
| Lateral (n = 41) |
Central (n = 6) |
Total (n = 47) (%) |
Lateral (n = 41) |
Central (n = 6) |
Total (n = 47) (%) |
|
| Localization of the resorption | ||||||
| Cervical third | 7 | 1 | 8 | 9 | 2 | 11 |
| Middle third | 20 | 4 | 24 | 10 | 3 | 13 |
| Apical third | 14 | 1 | 15 | 22 | 1 | 23 |
| Resorbed surfaces a | ||||||
| Buccal, distobuccal | 15 | 0 | 15 | 14 | 4 | 18 |
| Palatal, distopalatal | 16 | 4 | 20 | 20 | 0 | 20 |
| Distal | 5 | 2 | 7 | 2 | 1 | 3 |
| Mesial | 6 | 1 | 7 | 1 | 0 | 1 |
| Apical | 6 | 0 | 6 | 6 | 0 | 6 |
| Root resorption horizontal | ||||||
| Grade 1 | 0 | 0 | 0 (0) | 1 | 2 | 3 (6) |
| Grade 2 | 14 | 4 | 18 (38) | 15 | 2 | 17 (36) |
| Grade 3 | 16 | 1 | 17 (36) | 14 | 1 | 15 (32) |
| Grade 4 | 11 | 1 | 12 (26) | 11 | 1 | 12 (26) |
| Root resorption vertical | ||||||
| Grade 0 | 18 | 5 | 23 (49) | 11 | 1 | 12 (26) |
| Grade 1 | 8 | 0 | 8 (17) | 5 | 3 | 8 (17) |
| Grade 2 | 9 | 0 | 9 (19) | 11 | 1 | 12 (26) |
| Grade 3 | 5 | 1 | 6 (13) | 8 | 0 | 8 (17) |
| Grade 4 | 1 | 0 | 1 (2) | 6 | 1 | 7 (15) |
aOn some incisors, the resorption affected more than one surface; therefore, the total number of resorbed surfaces exceeds the total number of incisors.