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Table 3 The soft tissue and hyoid changes after orthognathic surgery in thirty skeletal Class III patients

From: Quantitative changes of upper airway in class III patients undergoing bimaxillary surgery after one-year follow-up: a retrospective study

  Pre-surgery Post-surgery Difference P
Soft palate length(mm) 33.2 ± 3.2 35.2 ± 4.2 2 ± 3.3 0.003**
Soft palate angle 109.2 ± 7.7 116.2 ± 6.8 7 ± 6.1 0.000***
Soft palate area(mm 2 ) 246.7 ± 59.7 260.5 ± 57.1 13.8 ± 46.9 0.118
Tongue horizontal length(mm) 58.1 ± 5.4 53.6 ± 5.3 −4.5 ± 3.5 0.000***
Tongue height(mm) 39.5 ± 6.2 43.6 ± 4.8 4.5 ± 3.4 0.000***
Retropalatal tongue area(mm 2 ) 845.5 ± 321.1 973.1 ± 271.6 127.6 ± 274.1 0.016*
Retroglossal tongue area(mm 2 ) 1117.5 ± 306 1193.8 ± 264.5 76.3 ± 222 0.070
Horizontal hyoid bone coordinates(mm) 0.4 ± 3.2 −0.4 ± 2.3 −0.8 ± 2.5 0.095
Vertical hyoid bone coordinates(mm) −83.8 ± 8.6 −82.8 ± 10.2 1.0 ± 4.7 0.259
Sagittal hyoid bone coordinates(mm) 6.2 ± 9.9 5.8 ± 9.1 −0.4 ± 2.9 0.491
  1. Paired t test: *p < 0.05, **p < 0.01, ***p < 0.001