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The regions of interest of the 335 CBCT and age group correlation Region of interest was grouped into sextant, defined as: (1) upper anterior, (2) upper right posterior, (3) upper left posterior, (4) lower anterior, (5) lower right posterior, (6) lower left posterior, (7) more than one sextant
| Region of interest | Age group | Total | ||
|---|---|---|---|---|
| 3–6 years | 7–12 years | 13–16 years | ||
| 1 | 7 | 149 | 73 | 229 |
| 2 | 2 | 3 | 5 | 10 |
| 3 | 1 | 8 | 8 | 17 |
| 4 | 1 | 9 | 9 | 19 |
| 5 | 0 | 5 | 2 | 7 |
| 6 | 1 | 6 | 7 | 14 |
| 7 | 2 | 24 | 13 | 39 |
| Total | 14 | 204 | 117 | 335 |
