Effects of Two-Phase Treatment with the Herbst and Preadjusted Edgewise Appliances on the Upper Airway Dimensions

Table 2

Method error analyses of landmark input using Dahlberg’s formula and paired -test.

Measurements	Dahlberg’s formula	-test value
Depth of upper airway (mm)
PM-UPW	0.981	0.233
U-MPW	0.448	0.180
PASmin	0.362	0.301
V-LPW	0.680	0.084
Skeletal morphology ()
SNA	0.506	0.072
SNB	0.356	0.088
ANB	0.497	0.561
MP-SN	0.847	0.287