Abstract
The aims of the present study were to establish the cephalometric craniofacial skeletal norms of Iraqi adolescents by me-ans of linear and angular analyses of po-stero–anterior and lateral cephalometric radiographs and to reveal any correlation between the variables measured.
The sample consisted of 101 Iraqi ad-olescents (52 males and 49 females) aged 12–15 years with Class I normal occlu-sion. Postero–anterior and lateral cephalo-metric radiographs were taken for each adolescent, and twenty cephalometric radi-ographic measurements (6 angular, 10 lin-ear and 4 ratio) were determined. Skeletal comparison between males and females showed that the angle of palatal plane inclination in relation to anterior cranial base (SN–PP) was significantly higher in females whereas the gonial angle (ArGo-Me) was significantly higher in males. For linear measurements, mandibular base len-gth (Go–Gn) showed no significant sex differences. The remaining linear measure-ments showed significant sex differences with the males having higher values. All ratios showed no significant differences between males and females.
