Table 1 Descriptive statistics of condylar volume (mm 3 ) in the whole sample, and in subjects classified on the base of mandibular divergence, or skeletal class
Data in the whole sample | ||||||
|---|---|---|---|---|---|---|
N = 34 (15 F and 19 M) | Mean | SD | Minimum | Maximum | P | |
Volume (right side) | 94 (46 F and 48 M) | 2535.2 | 684.7 | 1058.7 | 3775.6 | NS |
Volume (left side) | 94(46 F and 48 M) | 2569.1 | 673.2 | 1006.4 | 4153.2 | |
Low angle group (GoGn-SN angle ≤ 27°) | ||||||
N = 34 (15 F and 19 M) | Mean | SD | Minimum | Maximum | P | |
Volume (right side) | 34 | 2968.08 | 690.4 | 1999.1 | 3775.6 | ** P < 0.01 versus the other two groups |
Volume (left side) | 34 | 3037.4 | 777.9 | 2003.3 | 4153.2 | ** P < 0.01 versus the other two groups |
Normal angle group (28° ≤ GoGn-SN angle ≤ 37°) | ||||||
N = 42 (22 F and 20 M) | Mean | SD | Minimum | Maximum | P | |
Volume (right side) | 42 | 2492.3 | 709.7 | 1301.0 | 3752.2 | ** P ≤ 0.01 versus the low angle group |
Volume (left side) | 42 | 2669.7 | 742.7 | 1349.3 | 3739.3 | ** P ≤ 0.01 versus the low angle group |
High angle group (GoGn-SN angle ≥ 37°) | ||||||
N = 18 (9 F and 9 M) | Mean | Std. Deviation | Minimum | Maximum | P | |
Volume (right side) | 18 | 2441.2 | 660.3 | 1058.7 | 3608.0 | ** P ≤ 0.01 versus the high angle group |
Volume (left side) | 18 | 2577.5 | 550.5 | 1006.4 | 3183.3 | ** P ≤ 0.01 versus the high angle group |
Class II group | ||||||
N = 31 (15 F and 16 M) | Mean | SD | Minimum | Maximum | P | |
Volume (right side) | 31 | 2520.2 | 640.5 | 1058.7 | 3775.6 | NS |
Volume (left side) | 31 | 2520.2 | 640.5 | 1058.7 | 3775.6 | NS |
Class I group | ||||||
N = 38 (18 F and 20 M) | Mean | SD | Minimum | Maximum | P | |
Volume (right side) | 38 | 2580.0 | 730.2 | 1495.7 | 3680.2 | NS |
Volume (left side) | 38 | 2449.3 | 780.9 | 1490.4 | 3550.3 | NS |
Cass III group | ||||||
N = 25 (13 F and 12 M) | Mean | Std. Deviation | Minimum | Maximum | P | |
Volume (right side) | 25 | 2592.6 | 699.6 | 1006.4 | 3590.2 | NS |
Volume (left side) | 25 | 2570.7 | 679.4 | 1920.1 | 3658.3 | NS |