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Table 2 Measurement results pre-, post-surgery, and differences (mean ± SD)

From: The effect of orthognathic surgery on the lip lines while smiling in skeletal class III patients with facial asymmetry

Measurement

Pre-surgery

Post-surgery

P valuea

Differences

Point A (mm)

87.37 ± 4.69

88.10 ± 4.41

.821

−0.73 ± 1.95

Point B (mm)

91.22 ± 8.98

82.41 ± 6.55

<.001*

8.81 ± 4.26

Menton deviation (mm)

4.54 ± 3.92

1.50 ± 1.22

.001*

3.04 ± 3.76

Right canine (mm)

68.96 ± 3.90

69.08 ± 3.57

.768

−0.11 ± 1.79

Left canine (mm)

69.18 ± 3.63

68.74 ± 3.57

.394

0.44 ± 2.18

Right molar (mm)

56.71 ± 3.88

54.54 ± 3.46

.001*

2.16 ± 2.38

Left molar (mm)

56.82 ± 3.67

54.06 ± 3.62

.001*

2.76 ± 2.53

Right mouth corner (mm)

67.74 ± 4.23

69.51 ± 4.14

<.001*

−1.77 ± 1.74

Left mouth corner (mm)

67.72 ± 4.36

69.22 ± 4.01

.005*

−1.50 ± 2.00

Canine canting (mm)

1.06 ± 0.85

1.06 ± 0.75

.664

1.44 ± 1.08b

Molar canting (mm)

1.40 ± 1.06

1.36 ± 0.97

.945

1.42 ± 1.16b

Mouth corner canting (mm)

1.54 ± 1.26

0.94 ± 0.58

.048*

1.28 ± 1.03b

Canine line (°)

1.75 ± 1.44

1.71 ± 1.22

.794

2.32 ± 1.70b

Molar line (°)

1.44 ± 1.12

1.40 ± 1.01

.931

1.44 ± 1.17b

Mouth corner line (°)

0.70 ± 0.49

0.56 ± 0.42

.370

0.66 ± 0.65b

Smiling right mouth corner (mm)

66.39 ± 4.58

64.59 ± 4.47

.020*

1.8 ± 3.21

Smiling left mouth corner (mm)

66.09 ± 4.79

64.36 ± 4.58

.092

1.73 ± 3.52

Smiling mouth corner canting (mm)

1.09 ± 1.03

1.30 ± 1.06

.322

1.27 ± 1.13b

Smiling mouth corner line (°)

1.19 ± 1.06

1.42 ± 1.20

.588

1.43 ± 1.26b

  1. Differences change between the preoperative state and postoperative result (preoperative value-postoperative value), SD standard deviation
  2. *P < .05
  3. aSignificance according to the Wilcoxon signed-rank test
  4. bAbsolute value of difference