Table 4 Comparison of TMJ measurements among groups(mm/°, mean ± standard deviation)

Condylar length

17.30

±1.92

19.49

±2.13

17.16

±2.43

19.58

±2.50

17.32

±2.78

18.27

±3.11

17.39

±1.77

18.38

±2.38

C1 v C2

L1 v L2,

H1 v H2

L2 v N2

Condylar height

16.48

±1.76

18.74

±2.01

16.39

±2.42

18.85

±2.39

16.55

±2.73

17.52

±2.99

16.63

±1.76

17.66

±2.29

C1 v C2

L1 v L2,

H1 v H2

C2, L2 v N2

Condylar long axis diameter

16.99

±2.61

18.15

±1.96

17.37

±1.76

19.12

±2.49

16.94

±2.00

18.00

±2.16

15.54

±2.51

16.67

±2.14

L1 v L2

N1 v N2,

H1 v H2

C1, L1 v H1

L2 v H2

Condylar short axis diameter

7.73

±1.01

8.11

±0.97

7.85

±1.14

8.91

±1.26

7.77

±0.95

8.23

±1.39

7.55

±1.00

8.36

±0.98

L1 v L2

H1 v H2

C2, N2 v L2

Glenoid fossa width

17.35

±2.08

17.41

±1.15

17.41

±1.52

16.78

±2.13

17.50

±2.25

16.49

±1.72

17.07

±1.78

16.67

±2.56

N1 v N2

Glenoid fossa depth

6.62

±1.33

6.69

±1.39

7.37

±1.03

6.86

±1.04

6.96

±1.01

6.83

±1.21

6.50

±1.15

6.08

±1.03

L1 v L2

C1, H1 v L1

L2, N2 v H2

Condylar neck inclination

73.48

±6.07

74.24

±4.38

73.23

±6.01

75.50

±4.86

73.35

±5.08

75.35

±5.52

73.99

±6.47

76.04

±4.98

C1 v C2

Condylar head angle

151.56

±7.96

160.40

±6.74

154.12

±13.95

160.93

±5.76

152.44

±10.15

161.39

±8.91

154.26

±10.15

161.47

±8.31

L1 v L2

N1 v N2,

H1 v H2

Articular eminence inclination

49.62

±11.76

41.94

±9.47

53.24

±9.09

47.50

±8.00

50.42

±8.77

46.75

±8.32

49.43

±11.34

42.12

±8.06

C1 v C2

L1 v L2

H1 v H2

C2, H2 v L2

Condylar long axis angle

68.24

±8.43

69.32

±8.55

68.15

±5.38

66.84

±7.19

68.02

±7.69

69.88

±8.42

65.79

±9.03

67.19

±11.86

Mandibular arc

31.41

±4.47

33.27

±4.20

35.71

±3.54

39.26

±4.97

31.60

±4.03

34.94

±4.85

24.30

±3.22

28.11

±3.91

L1 v L2

N1 v N2

H1 v H2

C1, L1, N1 v H1

C2, L2, N2 v H2

Anterior joint space

1.55

±0.56

1.63

±0.63

1.71

±0.40

1.91

±0.82

1.70

±0.55

1.81

±0.60

1.82

±0.60

1.74

±0.62

Superior joint space

2.23

±0.63

2.34

±0.57

2.91

±0.77

2.74

±0.50

2.42

±0.58

2.77

±0.76

2.07

±0.74

2.37

±0.73

N1 v N2

C1, N1, H1 v L1

C2 v L2, N2

Posterior joint space

1.65

±0.48

1.40

±0.36

1.68

±0.48

1.64

±0.43

1.58

±0.39

1.63

±0.48

1.49

±0.46

1.59

±0.55

C1 v C2

Mesial joint space

2.11

±0.62

2.31

±0.69

2.50

±0.74

2.49

±0.70

2.19

±0.53

2.50

±0.70

1.91

±0.62

2.03

±0.65

N1 v N2

L1 v H1

L2, N2 v H2

Lateral joint space

2.09

±0.61

1.68

±0.57

2.34

±0.52

2.17

±0.69

2.05

±0.71

2.15

±0.66

1.88

±0.66

1.84

±0.85

C1 v C2

L1 v H1

C2 v L2, N2

Glenoid fossa vertical distance

−2.63

±1.42

−2.10

±1.52

−1.53

±1.36

−1.54

±1.35

−2.01

±1.29

−1.95

±1.36

−2.90

±1.32

−2.64

±1.78

L1 v C1, H1

H1 v L1, N1

L2 v H2

Glenoid fossa transverse distance

49.02

±2.44

49.07

±1.96

48.56

±1.87

49.48

±2.70

49.12

±2.34

49.08

±2.42

48.59

±2.40

50.19

±1.84

H1 v H2

Glenoid fossa anteroposterior distance

9.65

±3.12

9.75

±2.21

9.60

±3.11

8.95

±2.21

10.38

±2.13

8.90

±2.09

9.67

±2.76

8.84

±2.77

N1 v N2