Comparison of Pharyngeal Airway between Mandibular Setback Surgery Patients (Skeletal Class III) and Nonsurgery Patients (Skeletal Classes I and II)
Table 1
Patients characteristics in the skeletal classifications.
Variables
Class I (n= 40)
Class II (n= 40)
Class III (n= 40)
Preoperation intergroup comparison
Mean
SD
Mean
SD
Mean
SD
F
P value
Significant
C4C2-SN angle
106.4
6.44
107.1
6.59
96.3
7.31
31.158
< 0.001
II > III, I > III
Palatal angle
123.0
5.33
125.9
5.50
118.3
6.71
17.005
< 0.001
II > III, I > III
Soft palate length
36.0
4.32
37.3
4.90
32.7
3.04
12.794
< 0.001
II > III, I > III
Soft palate width
8.6
1.62
8.4
1.62
9.6
1.63
5.762
0.004
III > II, III > I
Pharyngeal airway
NOP
23.5
3.72
25.3
2.79
23.2
3.00
4.909
0.009
II > III, II > I
UOP
12.3
3.31
11.5
2.49
15.2
3.08
17.37
< 0.001
III > II, III > I
TOP
12.9
3.61
12.0
3.31
16.6
4.50
16.253
< 0.001
III > II, III > I
EOP
7.9
2.41
7.9
2.59
9.6
4.39
3.674
0.052
–
Pogonion
Horizontal
69.5
7.92
63.6
6.69
79.6
9.34
40.093
< 0.001
III > I > II
Vertical
124.6
9.14
124.0
6.62
121.6
9.25
1.392
0.253
–
Hyoid
Horizontal
17.3
7.86
14.1
7.13
23.1
9.57
12.194
< 0.001
III > II, III > I
Vertical
123.1
10.60
122.8
10.65
123.7
11.20
0.068
0.934
–
n: number of patient I: Class I, II: Class II, III: Class III NOP: nasopharyngeal airway, UOP: uvulopharyngeal airway TOP: shortest distance from posterior tongue to pharyngeal wall, EOP: distance from epiglottis to pharyngeal wall Statistically significant, p < 0.05 –: Not significant
