Three-dimensional oropharyngeal airway changes after facemask therapy using low-dose computed tomography: a clinical trial with a retrospectively collected control group

Progress in Orthodontics

Table 4 Descriptive statistics and the comparing between the two groups regarding to the baseline measurements^†

Variable	Control group (N = 16)		Facemask group (N = 18)		Mean difference	p-value^†	95% Confidence interval of the difference
Variable	Mean	SD	Mean	SD	Mean difference	p-value^†	Lower	Upper
SNA°	78.02	2.04	78.31	1.70	−0.30	0.654	−1.02	1.6
SNB°	79.22	2.02	79.95	1.42	−0.73	0.231	−0.49	1.94
ANB°	−1.21	0.81	−1.64	0.89	0.44	0.146	−1.03	0.16
SN-POG°	80.97	2.02	81.69	1.42	0.72	0.231	−0.48	1.94
SN-GOME°	33.51	4.16	31.28	3.84	2.23	0.115	−5.02	0.57
Jarabak Ratio	66.95	4.32	65.26	3.22	1.69	0.959	−4.32	0.21
Total oropharyngeal airway volume (mm³)	7563.34	2012.41	8308.13	2533.60	−744.79	0.345	−2357.31	867.74
Retropalatal airway volume (mm³)	4308.51	1273.48	4767.68	1349.69	−459.17	0.317	−1287.19	604.96
Retroglossal airway volume (mm³)	3254.83	930.24	3540.45	1360.66	−285.62	0.408	−1110.52	539.28
minimal cross-sectional area (mm²)	163.08	43.53	149.57	27.95	13.51	0.486	−11.75	38.78