Table 3.
Descriptive statistics and statistical comparisons of the T1-T2 changes
| Cephalometric measures | cHerbst group | Control group | Net change | P value | ||
|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | |||
| Skeletal measures | ||||||
| Co hor (mm) | −0.9 | 1.2 | −0.4 | 1.3 | −0.5 | 0.198 |
| Co ver (mm) | 0.3 | 1.2 | 0.9 | 1.3 | −0.6 | 0.098 |
| A hor (mm) | 0.5 | 1.0 | 0.9 | 1.2 | −0.4 | 0.161 |
| B hor (mm) | 1.7 | 1.9 | 1.0 | 1.7 | 0.7 | 0.185 |
| Pg hor (mm) | 1.9 | 2.1 | 1.4 | 2.1 | 0.5 | 0.383 |
| Me ver (mm) | 3.4 | 1.6 | 2.6 | 2.7 | 0.8 | 0.193 |
| Co-A (mm) | 1.6 | 1.5 | 1.3 | 1.8 | 0.3 | 0.593 |
| Co-Gn (mm) | 4.0 | 1.8 | 2.7 | 2.4 | 1.3 | 0.026 |
| Co-Go (mm) | 2.7 | 3.7 | 1.1 | 1.5 | 1.6 | 0.071 |
| Go-Me (mm) | 1.4 | 3.1 | 1.3 | 2.7 | 0.1 | 0.913 |
| SNA (°) | −0.3 | 0.9 | 0.2 | 1.1 | −0.5 | 0.142 |
| SNB (°) | 0.8 | 1.0 | 0.1 | 0.8 | 0.7 | 0.014 |
| SNPog (°) | 0.7 | 0.9 | 0.3 | 0.6 | 0.4 | 0.122 |
| ANB (°) | −1.1 | 1.0 | 0.0 | 0.7 | −1.1 | 0.000 |
| pp to T-FMN (°) | 0.7 | 1.2 | −0.5 | 1.9 | 1.2 | 0.005 |
| ml to T-FMN (°) | 0.3 | 1.9 | 0.1 | 2.0 | 0.2 | 0.684 |
| Co-Go-Me (°) | 0.6 | 2.8 | 0.7 | 1.7 | −0.1 | 0.890 |
| Dental measures | ||||||
| Overjet (mm) | −2.7 | 1.9 | 0.0 | 0.8 | −2.7 | 0.000 |
| Overbite (mm) | −2.7 | 1.3 | −0.4 | 0.7 | −2.3 | 0.000 |
| ms hor (mm) | −1.6 | 1.6 | 1.1 | 1.7 | −2.7 | 0.000 |
| ms ver (mm) | 1.4 | 1.2 | 1.7 | 1.9 | −0.3 | 0.501 |
| Upper molar tipping (°) | −5.7 | 4.5 | 1.4 | 4.1 | −7.1 | 0.000 |
| mi hor (mm) | 3.6 | 1.9 | 1.1 | 1.7 | 2.5 | 0.000 |
| mi ver (mm) | 2.6 | 1.3 | 1.6 | 2.0 | 1.0 | 0.031 |
| is hor (mm) | 0.1 | 1.8 | 1.0 | 1.3 | −0.9 | 0.076 |
| is ver (mm) | 1.6 | 1.4 | 1.1 | 1.6 | 0.5 | 0.291 |
| ii hor (mm) | 2.9 | 1.7 | 1.0 | 1.6 | 1.9 | 0.000 |
| ii ver (mm) | 4.3 | 1.7 | 1.5 | 2.0 | 2.8 | 0.000 |
| Upper incisor inclination (°) | −2.3 | 4.6 | 0.3 | 2.1 | −2.6 | 0.023 |
| Lower incisor inclination (°) | 4.6 | 4.1 | −0.8 | 3.4 | 5.4 | 0.000 |