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Table 3 Changes in airway size in 3D before and after treatment

From: The effect of orthodontic vertical control on the changes in the upper airway size and tongue and hyoid position in adult patients with hyperdivergent skeletal class II

 

T0

T1

t or Z

P-values

Vn (mm3)

7709.77 ± 2185.89

7739.88 ± 2573.23

−0.093

0.925

Vv (mm3)

9562.01 ± 3979.64

10,617.90 ± 4960.36

−0.472

0.653

Vg (mm3)

3597.94/5022.80/8238.40

3548.11/4365.34/6551.65

−0.804

0.432

Vl (mm3)

1462.19/2549.57/5678.21

2098.42/3769.39/4335.40

−0.062

0.966

Vt (mm3)

26,457.67 ± 9507.23

27,928.48 ± 11,172.91

−0.724

0.482

Hv (mm)

27.29 ± 4.31

27.44 ± 4.26

−0.524

0.608

Hg (mm)

24.82 ± 2.51

23.13 ± 3.86

1.983

0.061

S1 (mm2)

220.96 ± 133.11

215.89 ± 116.36

0.182

0.860

S2 (mm2)

219.03 ± 125.65

215.96 ± 153.07

0.084

0.942

Sagittal diameterL1 (mm)

10.15 ± 3.00

10.27 ± 3.02

−0.187

0.853

Transverse diameterL1 (mm)

25.66 ± 6.15

26.35 ± 6.80

−0.472

0.649

Sagittal diameterL2 (mm)

7.22/12.37/16.51

9.16/12.27/15.51

−3.124

0.002**

Transverse diameterL2 (mm)

29.39 ± 5.61

27.04 ± 5.80

4.028

0.001**

IAV (mm3)

23.78/922.02/3197.86

37.16/508.29/4067.53

−1.082

0.282

  1. T0 Before treatment, T1 After treatment, t Paired t-test, Z Wilcoxon signed-rank test, 3D Three-dimensional; *P < 0.05, **P < 0.01