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Maxillofacial Plastic and Reconstructive Surgery

Table 3 Displacement of hyoid bone in X-, Y-, and Z-axes before and after surgery (mm)

From: Changes in the hyoid bone, tongue, and oropharyngeal airway space after mandibular setback surgery evaluated by cone-beam computed tomography

 

T0

T1

ΔT1 − T0

P value

X(Rt(−)-Lt(+))

− 0.37 ± 3.51

− 0.42 ± 3.75

− 0.04 ± 1.55

0.879

Y(Ant(−)-Post(+))

50.46 ± 9.13

53.76 ± 9.34

3.30 ± 2.90

0.000***

Z(Inf(−)-Sup(+))

− 116.09 ± 9.26

− 121.08 ± 9.78

− 4.99 ± 4.16

0.000***

  1. Data are presented as mean ± standard deviation. Paired t tests were performed to determine significant differences in displacement of the hyoid bone in x-, y-, and z-axes between T0 and T1. T0 before surgery, T1 1 month after surgery, Rt right, Lt left, Ant anterior, Post posterior, Inf inferior, Sup superior
  2. *P < 0.05; **P < 0.01; ***P < 0.001
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