Introduction The objective of this study was to compare the head posture of patients with
obstructive sleep apnea (OSA) having different levels of severity with that of control subjects.
Methods One hundred subjects participated in this study. Seventy-five subjects underwent
overnight polysomnography in a sleep laboratory and were allocated into “mild,”“moderate,”
or “severe” OSA groups, and 25 subjects with no complaints regarding OSA were allocated
into 1 group and served as the controls. Cephalometric radiographs were obtained from all …