Comparison of Pharyngeal Airway between Mandibular Setback Surgery Patients (Skeletal Class III) and Nonsurgery Patients (Skeletal Classes I and II)

Table 2

Preoperation pharyngeal airways in the skeletal classifications (Pearson test).

Total	Classifications	C4C2-SN angle	Palatal angle	SPL	SPW	Hyoid H	Hyoid V
NOP	-0.038	0.033	0.390	0.190	-0.047	-0.173	-0.076
UOP	0.354	-0.136	-0.243	-0.405	0.183	-0.031	0.025
TOP	0.350	-0.085	-0.274	-0.180	0.129	0.133	0.132
EOP	0.211	-0.082	-0.196	-0.097	0.021	0.132	0.132

SPL: Soft palate length; SPW: Soft palate width; Hyoid H (Horizontal); Hyoid V (Vertical)
: Statistically significant, < 0.05; very weak (0 – 0.19), weak (0.20 – 0.39), moderate (0.40 – 0.59), strong (0.60 – 0.79), and very strong (0.80 – 1.0).