Table 4.
Assessment of changes in the cervicofacial skeleton that occurred between the first and the second orthodontic examination in the control group.
| Comparable Characteristic | First Examination av. ± SD (95% CI) |
Second Examination (1–2 Years after the Initial One) av. ± SD (95% CI) |
p-Value | |
|---|---|---|---|---|
| Vertical position of mandible | NL-ML angle (°) | 21.1 ± 5.5 (18.0 to 24.1) | 21.1 ± 5.5 (18.0 to 24.1) | 1.0000 a |
| Sagittal position of mandible | Wits (mm) | 0.6 ± 2.8 (−0.9 to 2.2) | 0.6 ± 2.8 (−0.9 to 2.2) | 1.0000 a |
| ANB (°) | 2.3 ± 2.7 (0.9 to 3.8) | 2.3 ± 2.7 (0.9 to 3.8) | 1.0000 b | |
| Head position and cervical vertebrae | CV angle (°) | 100.4 ± 7.1 (96.4 to 104.3) | 100.4 ± 7.0 (96.5 to 104.2) | 0.3003 b |
| C2 post-C3/C5 line angle (°) | 9.0 ± 7.7 (4.7 to 13.2) | 9.0 ± 7.6 (4.7 to 13.2) | 0.5563 b | |
| C1-dens C2 AP distance (mm) | 1.5 ± 0.2 (1.4 to 1.6) | 1.5 ± 0.2 (1.4 to 1.6) | 0.5930 b | |
| C1-C2 ant distance (mm) | 34.4 ± 2.6 (32.9 to 35.9) | 34.4 ± 2.6 (33.0 to 35.8) | 0.3505 b | |
| NS-C2 axis angle (°) | 87.3 ± 6.5 (83.7 to 90.9) | 87.3 ± 6.5 (83.7 to 90.9) | 0.9029 a | |
| Cervical vertebrae functional spaces | C0-C1 distance (mm) | 7.4 ± 1.6 (6.5 to 8.2) | 7.4 ± 1.6 (6.5 to 8.2) | 0.8494 a |
| C1-C2 distance (mm) | 5.5 ± 1.7 (4.6 to 6.5) | 5.5 ± 1.6 (4.6 to 6.4) | 0.8939 b | |
a t-Student test; b Wilcoxon test.