Table 2 The mean and standard deviation (SD) for velopharyngeal (VP), oropharyngeal (OP), hypopharyngeal (HP), and total pharyngeal (TP) dimensions in the study groups at different intervals

VP

Mandibular setback

10.09 ± 0.85^A

7.56 ± 0.54^B

8.97 ± 0.60^C

P<0.001

Bimaxillary surgery

9.31 ± 1.21^A

7.04 ± 0.64^B

8.76 ± 0.85^A

P<0.001

Maxillary advancement

10.87 ± 0.87^A

9.82 ± 1.31^B

11.56 ± 0.72^C

P<0.001

OP

Mandibular setback

9.02 ± 0.96^A

6.94 ± 0.56^B

7.75 ± 0.63^C

P<0.001

Bimaxillary surgery

7.79 ± 0.61^A

6.21 ± 0.64^B

7.24 ± 0.70^C

P<0.001

Maxillary advancement

9.96 ± 0.79^A

9.08 ± 1.43^B

10.80 ± 0.77^C

P<0.001

HP

Mandibular setback

9.31 ± 0.87^A

7.58 ± 0.63^B

8.27 ± 0.64^C

P<0.001

Bimaxillary surgery

7.79 ± 0.73^A

6.27 ± 0.57^B

7.38 ± 0.38^C

P<0.001

Maxillary advancement

10.30 ± 0.80^A

9.26 ± 0.84^B

10.90 ± 0.78^C

P<0.001

TP

Mandibular setback

28.43 ± 1.44^A

22.09 ± 1.29^B

25.0 ± 1.25^C

P<0.001

Bimaxillary surgery

24.89 ± 1. 89^A

19.53 ± 0.98^B

23.38 ± 1.41^C

P<0.001

Maxillary advancement

31.14 ± 1.65^A

28.17 ± 2.40^B

33.27 ± 1.30^C

P<0.001