Table 2. The relationship between sector location on panoramic radiographs and labiopalatal position on cone beam CT images.
| Age (years) | Sector location | Labial | Mid-alveolus | Palatal | Total |
| ≤ 15 | 1 | 11 | 1 | 1 | 13 (27.1%) |
| 2 | 7 | 2 | 0 | 9 (18.8%) | |
| 3 | 5 | 2 | 1 | 8 (16.7%) | |
| 4 | 3 | 4 | 1 | 8 (16.7%) | |
| 5 | 0 | 6 | 4 | 10 (20.8%) | |
| Subtotal | 26 (54.2%) | 15 (31.3%) | 7 (14.6%) | 48 | |
| > 15 | 1 | 1 | 0 | 0 | 1 (4.0%) |
| 2 | 1 | 3 | 0 | 4 (16.0%) | |
| 3 | 1 | 0 | 1 | 2 (8.0%) | |
| 4 | 1 | 5 | 4 | 10 (40.0%) | |
| 5 | 0 | 0 | 8 | 8 (32.0%) | |
| Subtotal | 4 (16.0%) | 8 (32.0%) | 13 (52.0%) | 25 | |
| Total | 1 | 12 | 1 | 1 | 14 (19.2%) |
| 2 | 8 | 5 | 0 | 13 (17.8%) | |
| 3 | 6 | 2 | 2 | 10 (13.7%) | |
| 4 | 4 | 9 | 5 | 18 (24.7%) | |
| 5 | 0 | 6 | 12 | 18 (24.7%) | |
| Total | 30 (41.1%) | 23 (31.5%) | 20 (27.4%) | 73 (100%) |