Comparison of Pharyngeal Airway between Mandibular Setback Surgery Patients (Skeletal Class III) and Nonsurgery Patients (Skeletal Classes I and II)
Table 3
Patients characteristics (Class III) in the surgical changes.
Variables
Surgical changes
Postoperation intergroup comparison
Mean
SD
F
value
Significant
C4C2-SN angle
3.6
5.17
12.362
< 0.001
II > III, I > III
Palatal angle
4.4
6.21
4.325
0.015
II > III
Soft palate length
1.3
3.33
5.258
0.007
II > III
Soft palate width
-0.4
1.68
–
2.584
0.080
–
Pharyngeal airway
NOP
0.4
2.21
–
3.626
0.030
II > I
UOP
-2.7
2.18
1.309
0.274
–
TOP
-3.4
3.77
1.116
0.331
–
EOP
-1.6
3.15
0.020
0.980
–
Pogonion
Horizontal
-10.7
4.65
6.289
0.003
III > II, I > II
Vertical
-0.7
3.22
–
2.202
0.115
–
Hyoid
Horizontal
-5.4
5.14
2.271
0.108
–
Vertical
2.1
6.30
0.977
0.379
–
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, < 0.05; –: Not significant
