Cephalometric norms for the upper airway of 12-year-old Chinese children

Head & Face Medicine

Table 7 Cephalometric values of the upper airway for age differences (adults versus children)

Variables		Males			Females
Variables		Mean	P value		Mean	P value
Soft palate
PM-U	Length of the soft palate	4.7	<0.001	***	1.3	0.009	**
SPT	Soft palate thickness	1.8	<0.001	***	0.9	<0.001	***
NL/PM-U	Inclination of the long axis of the soft palate relative to the nasal line	1.4	0.119		1.4	0.039	*
Depth of upper airway
PM-UPW	Depth of the nasopharyngeal airway space	4.9	<0.001	***	3.2	<0.001	***
U-MPW	Depth of the retropalatal pharyngeal airway space	1.2	0.017	*	0.7	0.027	*
V-LPW	Depth of the hypopharyngeal airway space	5.3	<0.001	***	2.0	<0.001	***
PASmin	Depth of the retroglossal pharyngeal airway space	1.7	0.002	**	1.0	0.008	**
Position of the hyoid bone
AH-FH	Positon of the hyoid bone in the vertical plance	17.2	<0.001	***	4.4	<0.001	***
AH-CV	Positon of the hyoid bone in the horizontal plance	6.3	<0.001	***	1.0	0.009	**

ISSN: 1746-160X