Table 3 Comparison of quality of life scores at before treatment (T1); 1 month after surgery (T2); 6 months after treatment (T3); 12 months after treatment (T4); and 18 month after treatment (T5); the finished treatment(T6) with T1 (before treatment) in two group

functional limitation

Surgery-first group

8.42

5.22

0.034*

2.39

0.000***

1.99

0.000***

1.98

0.000***

1.89

0.000***

(2.79)

(1.88)

(1.24)

(1.76)

(1.68)

(1.26)

Orthodontic-first group

8.45

8.30

0.867

8.79

0.758

5.42

0.000***

1.98

0.000***

1.92

0.000***

(2.99)

(2.56)

(1.23)

(1.98)

(1.68)

(1.56)

physical pain

Surgery-first group

5.26

3.22

0.045*

2.34

0.009**

1.59

0.000***

1.56

0.000***

1.34

0.000***

(1.85)

(1.55)

(1.24)

(0.67)

(0.51)

(0.89)

Orthodontic-first group

5.46

5.30

0.920

6.02

0.052

3.51

0.000***

1.89

0.000***

1.75

0.000***

(1.61)

(1.69)

(2.36)

(1.72)

(1.28)

(1.22)

psychological discomfort

Surgery-first group

6.12

4.29

0.048*

2.22

0.000***

0.56

0.000***

0.52

0.000***

0.45

0.000***

(2.12)

(1.22)

(1.12)

(1.10)

(0.18)

(0.13)

Orthodontic-first group

6.25

6.52

0.685

6.56

0.658

4.82

0.000***

2.82

0.000***

0.92

0.000***

(2.09)

(2.23)

(2.85)

(2.29)

(1.31)

(1.26)

physical disability

Surgery-first group

6.29

4.15

0.045*

1.64

0.000***

1.34

0.000***

0.12

0.000***

0.10

0.000***

(2.64)

(1.72)

(1.08)

(1.22)

(0.11)

(0.03)

Orthodontic-first group

6.39

6.56

0.687

6.85

0.785

4.42

0.000***

2.41

0.000***

1.49

(0.91)

0.000***

(2.72)

(2.67)

(2.75)

(1.75)

(1.13)

psychological disability

Surgery-first group

6.54

3.28

0.007**

1.64

0.000**

*

0.42

0.000***

0.20

0.000***

0.15

0.000***

(2.52)

(1.76)

(1.08)

(0.21)

(0.12)

(0.12)

Orthodontic-first group

6.72

6.79

0.920

6.76

0.925

3.72

0.000***

1.83

0.000***

0.88

0.000***

(2.42)

(3.41)

(3.06)

(1.58)

(1.15)

(1.13)

social disability

Surgery-first group

6.03

4.26

0.042

1.24

0.000***

0.62

0.000***

0.19

0.000***

0.15

0.000***

(2.32)

(1.98)

(1.08)

(0.35)

(0.22)

(0.15)

Orthodontic-first group

6.12

6.86

0.865

6.89

0.675

4.52

0.000***

1.64

0.000***

0.98

0.000***

(2.68)

(2.88)

(2.29)

(2.56)

(1.18)

(1.12)

handicaps

Surgery-first group

3.24

2.18

0.035

1.52

0.004**

0.38

0.000***

0.16

0.000***

0.12

0.000***

(1.18)

(1.81)

(1.75)

(0.26)

(0.12)

(0.12)

Orthodontic-first group

5.66

6.34

0.901

6.61

0.921

2.42

0.000***

1.94

0.000***

0.78

0.000***

(2.81)

(1.85)

(2.72)

(2.12)

(1.36)

(1.12)

Total scores

Surgery-first group

38.68

27.72

0.031*

13.94

0.000***

6.90

0.000***

4.11

0.000***

3.89

0.000***

(4.35)

(3.26)

(2.13)

(1.39)

(0.49)

(1.02)

Orthodontic-first group

39.55

41.67

0.654

48.48

0.124

28.86

0.000***

15.61

0.000***

8.68

0.000***

(4.15)

(4.14)

(3.91)

(3.83)

(2.49)

(1.65)