Table 2 Descriptive statistics of condylar surface (mm 2 ) in the whole sample, and in subjects classified on the base of mandibular divergence, or skeletal class
Data in the whole sample | ||||||
|---|---|---|---|---|---|---|
Mean | SD | Minimum | Maximum | P | ||
Surface (right side) | 94 (46 F and 48 M) | 1230.9 | 242.7 | 729.2 | 1758.1 | NS |
Surface (left side) | 94 (46 F and 48 M) | 1249.1 | 237.3 | 767.6 | 1802.9 | NS |
Low angle group (GoGn-SN angle ≤ 27°) | ||||||
N = 34 (15 F and 19 M) | Mean | SD | Minimum | Maximum | P | |
Surface (right side) | 34 | 1346.2 | 187.0 | 1099.6 | 1560.1 | ** p ≤ 0.01 versus the other two groups |
Surface (left side) | 34 | 1413.2 | 275.5 | 1102.2 | 1802.9 | ** 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 | |
Surface (right side) | 42 | 1225.0 | 256.3 | 838.2 | 1758.1 | ** p ≤ 0.01 versus the low angle groups |
Surface (left side) | 42 | 1288.7 | 277.9 | 925.9 | 1726.4 | ** p ≤ 0.01 versus the low angle groups |
High angle group (GoGn-SN angle ≥ 37°) | ||||||
N = 18 | ||||||
(9 F and 9 M) | Mean | Std. Deviation | Minimum | Maximum | P | |
Surface (right side) | 18 | 1202.5 | 250.4 | 729.2 | 1656.7 | ** p ≤ 0.01 versus the low angle groups |
Surface (left side) | 18 | 1179.3 | 178.7 | 767.6 | 1512.4 | ** p ≤ 0.01 versus the low angle groups |
Class II group | ||||||
N = 31 (15 F and 16 M) | Mean | SD | Minimum | Maximum | P | |
Surface (right side) | 31 | 1280.3 | 255.4 | 729.2 | 1690.2 | NS |
Surface (left side) | 31 | 1320.4 | 293.5 | 870.3 | 1720.3 | NS |
Class I group | ||||||
N = 38 (18 F and 20 M) | Mean | SD | Minimum | Maximum | P | |
Surface (right side) | 38 | 1340.4 | 218.4 | 889.7 | 1758.1 | NS |
Surface (left side) | 38 | 1326.7 | 248.3 | 939.5 | 1802.9 | NS |
Class III group | ||||||
N = 25 (13 F and 12 M) | Mean | Std. Deviation | Minimum | Maximum | P | |
Surface (right side) | 25 | 1380.6 | 236.5 | 990.6 | 1782.5 | NS |
Surface (left side) | 25 | 1420.5 | 237.1 | 767.6 | 1790.6 | NS |