Table 6 Comparison of the TMJ measurement values before and after treatment in the Twin-Block functional appliance group (x ± s, mm)

AJS

2.72 ± 0.25

2.70 ± 0.21

0.652

SJS

2.88 ± 0.24

2.88 ± 0.20

0.954

PJS

2.57 ± 0.24

2.63 ± 0.18

0.069

MJS

2.87 ± 0.19

2.88 ± 0.28

0.695

LJS

2.68 ± 0.19

2.66 ± 0.23

0.664

WGF

28.94 ± 0.94

29.41 ± 1.41

0.075

DGF

13.36 ± 0.73

14.77 ± 1.12

0.001*

HC

9.00 ± 0.56

10.97 ± 1.02

0.001*

SCA (°)

73.27 ± 2.03

73.08 ± 2.54

0.640

HCA (°)

73.26 ± 2.57

73.89 ± 2.04

0.068

IEDC

16.43 ± 1.36

17.82 ± 1.32

0.001*

APDC

8.41 ± 0.40

10.20 ± 1.10

0.001*

VC (mm³)

1186.50 ± 150.30

1270.48 ± 91.37

0.001*

SC (mm²)

1500.24 ± 107.39

1618.27 ± 104.29

0.001*

LMR

59.80 ± 3.23

64.54 ± 3.35

0.001*

LMB

78.94 ± 1.94

82.07 ± 1.22

0.001*

WMR

31.55 ± 2.16

32.56 ± 1.84

0.001*

ML

112.29 ± 2.60

117.49 ± 4.10

0.001*