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Table 2 Measurement of the condylar height and jaw position before and 12 months after operation within the two groups

From: Temporomandibular joint disc repositioning and occlusal splint for adolescents with skeletal class II malocclusion: a single-center, randomized, open-label trial

Group

Contents

Pre-Operation

Post-Operation

P value

OSu

Condylar height

19.11 ± 3.83

20.52 ± 3.80

< 0.001*

Overjet (mm)

5.19 ± 1.81

4.03 ± 1.54

< 0.001*

SNA (°)

80.96 ± 3.68

81.03 ± 3.68

0.643

SNB (°)

76.08 ± 3.48

76.73 ± 3.55

< 0.001*

ANB(°)

4.88 ± 1.87

4.33 ± 1.88

0.020*

Wits appraisal (mm)

1.17 ± 2.87

0.62 ± 2.59

0.091

Y-axis angle (°)

72.03 ± 5.24

71.93 ± 5.22

0.694

U1-SN (°)

105.13 ± 8.23

105.56 ± 8.36

0.455

Pog’-G’(mm)

8.75 ± 8.59

8.01 ± 7.72

0.040*

Sn-G’ (mm)

4.65 ± 3.73

4.62 ± 3.30

0.916

L1-MP

96.90 ± 6.23

97.98 ± 6.68

0.123

U1-L1 (°)

118.21 ± 11.80

117.19 ± 10.92

0.232

OSu + POS

Condylar height

19.00 ± 3.65

21.83 ± 3.85

< 0.001*

Overjet (mm)

5.30 ± 2.30

3.26 ± 1.85

< 0.001*

SNA (°)

81.06 ± 3.06

81.44 ± 3.35

0.162

SNB (°)

75.13 ± 3.92

76.96 ± 4.38

< 0.001*

ANB(°)

5.81 ± 2.37

4.41 ± 2.57

< 0.001*

Wits appraisal (mm)

1.79 ± 2.99

-0.65 ± 2.90

< 0.001*

Y-axis angle (°)

74.85 ± 4.00

73.30 ± 4.57

0.001*

U1-SN (°)

106.46 ± 7.79

106.36 ± 8.65

0.901

Pog’-G’(mm)

11.74 ± 6.97

9.39 ± 6.12

0.001*

Sn-G’ (mm)

3.70 ± 3.10

3.98 ± 3.07

0.073

L1-MP

98.62 ± 7.66

100.03 ± 7.17

0.072

U1-L1 (°)

113.02 ± 10.97

113.38 ± 10.46

0.672

  1. Abbreviated: OSu, open suturing; POS, postoperative splint. *P < 0.05