Index | Number | Mean ± SD (cm) | P | |
---|---|---|---|---|
frontal sinus width | forehead protrusion | |||
All samples | 405 | 0.841 ± 0.269 | 0.975 ± 0.192 | 0.002* |
Sex | ||||
 Male | 204 | 0.937 ± 0.291 | 0.995 ± 0.211 | 0.013* |
 Female | 201 | 0.743 ± 0.204 | 0.956 ± 0.170 | 0.587 |
Age | ||||
 Adult | 152 | 0.880 ± 0.301 | 1.033 ± 0.189 | <0.001** |
 Teenager | 160 | 0.848 ± 0.250 | 0.983 ± 0.181 | 0.660 |
 Child | 93 | 0.766 ± 0.230 | 0.868 ± 0.172 | 0.968 |
Dentoskeletal classification | ||||
 Class I | 204 | 0.849 ± 0.287 | 1.002 ± 0.194 | 0.009* |
 Class II | 127 | 0.820 ± 0.233 | 0.977 ± 0.185 | 0.118 |
 Class III | 74 | 0.855 ± 0.277 | 0.899 ± 0.180 | 0.320 |
Forehead’s most convex part | ||||
 In the upper 1/3 | 14 | 0.757 ± 0.248 | 1.019 ± 0.262 | 0.930 |
 In the middle 1/3 | 187 | 0.764 ± 0.217 | 0.974 ± 0.173 | 0.179 |
 In the lower 1/3 | 204 | 0.917 ± 0.293 | 0.974 ± 0.204 | 0.002* |