[Retracted] X-Ray Cephalometric Analysis of the Effects of Angle Class II and III Malocclusion on the Upper Airway Width and Hyoid Position between Parents and Children of Uygur Nationality

Figure 1

(1) PNS-UPW: the distance between the posterior nasal spine and the upper pharynx wall, representing the nasopharyngeal airway gap; (2) U-MPW: the distance between the soft palate and the middle and posterior pharynx wall, representing the upper oropharyngeal airway gap; (3) PAS: the space extends through nasal passages to the posterior pharynx and beyond the base of the tongue, lower oropharyngeal airway gap/airway gap behind the root of tongue; and (4) V-LPW: the distance between the vallecula epiglottica point and the posterior pharyngeal wall point, representing the laryngopharyngeal airway gap.