Table 4.
Mean Values of j\Joint Spaces According to Vertical and Horizontal Skeletal Patterns (FHR and ANB) a
| Mean |
||||||||
| Class III ANB < 1° (n = 31) | ||||||||
| Hyperdivergent FHR < 62% (n = 5) |
SD |
Normovergent 62% ≤ FHR ≤ 65% (n = 10) |
SD |
Hypodivergent FHR > 65% (n = 16) |
SD |
P Value |
||
| Sagittal view | AS (mm) | 2.43 | 0.69 | 2.39 | 0.60 | 2.30a | 0.42 | .861 |
| SS (mm) | 2.89 | 0.62 | 2.91 | 0.83 | 2.87b | 0.57 | .986 (.973) | |
| PS (mm) | 2.79 | 0.51 | 2.30 | 0.51 | 2.79a,b | 0.71 | .140 | |
| P value | .470 (.228) | .097 (.119) | .016* (.031*) | |||||
| ArS (°) | 44.72 | 5.47 | 47.15 | 8.58 | 47.86 | 5.80 | .669 | |
| VHF (mm) | 5.84 | 0.81 | 6.52 | 1.18 | 6.32 | 1.42 | .627 (.624) | |
| APT (mm) | 8.22 | 1.41 | 8.53 | 1.42 | 8.13 | 0.91 | .707 | |
| Coronal view | MS (mm) | 2.68 | 0.26 | 2.59 | 0.61 | 2.57 | 0.53 | .919 |
| LS (mm) | 2.78 | 0.90 | 2.68 | 0.89 | 2.50 | 0.47 | .687 | |
| P value | .827 | .808 | .695 | |||||
| MLT (mm) | 16.62 | 1.97 | 18.14 | 2.30 | 17.56 | 2.01 | .429 | |
a
Same letters mean no statistical differences; a, b. Kruskal-Wallis test results are presented in parentheses when the homogeneity of variance and the normality are not satisfied. APT indicates anteroposterior thickness; AS, anterior space; ArS, articular slope; LS, lateral space; MLT, mediolateral thickness; MS, medial space; PS, posterior space; SD, standard deviation; SS, superior space; VHF, vertical height of fossa. * P < .05, ** P < .01, *** P < .001.