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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