Upper Airway Changes following Functional Treatment with the Headgear Herbst or Headgear Twin Block Appliance Assessed on Lateral Cephalograms and Magnetic Resonance Imaging

Table 4

Correlation analysis between changes in upper airway dimensions and PSQ score.

		Δ U-MPW depth	Δ RP depth	Δ HP area
		(mm)	(mm)	(mm^2)
PSQ score	Coefficient	0.45	0.45	0.44
	value	0.047	0.040	0.043

= p < 0.05