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

Head & Face Medicine

Table 6 Cephalometric values of the upper airway for interethnic differences (Chinese versus Caucasian)

Variables		Boys			Girls
Variables		Mean	P value		Mean	P value
Soft palate
PM-U	Length of the soft palate	-0.2	0.681		-0.1	0.954
SPT	Soft palate thickness	0.0	0.827		0.0	0.714
NL/PM-U	Inclination of the long axis of the soft palate relative to the nasal line	1.3	0.252		0.2	0.456
Depth of upper airway
PM-UPW	Depth of the nasopharyngeal airway space	0.0	0.914		-0.2	0.738
U-MPW	Depth of the retropalatal pharyngeal airway space	-0.4	0.146		0.1	0.724
V-LPW	Depth of the hypopharyngeal airway space	0.3	0.314		1.4	0.01	**
PASmin	Depth of the retroglossal pharyngeal airway space	0.9	0.019	*	1.1	0.005	**
Position of the hyoid bone
AH-FH	Positon of the hyoid bone in the vertical plance	2.1	0.014	*	1.3	0.114
AH-CV	Positon of the hyoid bone in the horizontal plance	1.5	0.001	**	0.9	0.074

ISSN: 1746-160X