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Table 4 Post-treatment comparison (T2) of the mean values of cephalometric analysis between the RME-RTB, RME-FM, and control groups

From: Effectiveness of reverse twin block with lip pads-RME and face mask with RME in the early treatment of class III malocclusion

Parameters

RME-RTB (n = 13), X ± SD

RME-FM (n = 13), X ± SD

Control (n = 13), X ± SD

p value

p value

RME-RTB, RME-FM

RME-RTB control

RME-FM control

Measurements for assessment of cranial base angulations

 < Ba-T-Vert T

30.76 ± 2.80

32.38 ± 4.55

31.30 ± 4.19

0.567

0.552

0.936

0.768

 < Ar-T-Vert T

26.69 ± 3.06

27.61 ± 3.92

26 ± 3.71

0.524

0.791

0.872

0.499

Antero-posterior skeletal measurements

 < SNA

81.15 ± 2.79

80.23 ± 3.46

79.26 ± 2.04

0.243

0.684

0.217

0.669

 < SNB

81.15 ± 3.31

80.73 ± 2.99

82.88 ± 2.27

0.142

0.923

0.299

0.152

 < ANB

0.00 ± 1.08

− 0.50 ± 1.93

− 3.61 ± 1.34

0.008**

0.674

0.006**

0.005**

Wits (mm)

− 3.92 ± 3.56

− 4.84 ± 2.19

− 8.53 ± 2.40

0.009**

0.678

0.005**

0.006**

 A-Vert T (mm)

66.80 ± 5.92

62.88 ± 5.80

65.15 ± 4.50

0.192

0.179

0.724

0.547

 Ptm-Vert T (mm)

18.80 ± 3.05

16.30 ± 2.68

18.76 ± 2.42

0.038*

0.063

0.992

0.063

 Co-A (mm)

87.73 ± 4.80

85.84 ± 7.53

82.46 ± 5.75

0.096

0.712

0.085

0.344

 Pr-Vert T (mm)

69.76 ± 7.03

65.30 ± 6.48

67.07 ± 4.44

0.182

0.169

0.506

0.748

 B-Vert T (mm)

67.15 ± 9.29

61.30 ± 8.41

69.30 ± 6.48

0.048*

0.172

0.783

0.045

 Id-Vert T (mm)

69.15 ± 9.29

63.46 ± 7.86

70.76 ± 6.40

0.064

0.177

0.862

0.066

 Co-Gn (mm)

119.07 ± 9.16

115.92 ± 10.34

113.61 ± 8.08

0.333

0.662

0.367

0.804

 Co-Go (mm)

56.30 ± 4.78

56.76 ± 7.66

52.23 ± 5.70

0.136

0.986

0.225

0.163

 Go-Gn (mm)

78 ± 6.63

75.61 ± 8.06

74.15 ± 5.25

0.358

0.647

0.325

0.846

 Co-Vert T (mm)

16.73 ± 2.42

17.84 ± 2.79

14.03 ± 2.76

0.008**

0.546

0.035*

0.004**

Vertical skeletal measurements

 < ML-SBL

27.69 ± 5.46

27.53 ± 6.29

25.92 ± 6.38

0.714

0.991

0.734

0.771

 < NL-SBL

− 0.69 ± 2.17

1.23 ± 3.58

0.30 ± 1.60

0.185

0.153

0.598

0.634

 < NL-ML

28.46 ± 4.42

26.30 ± 4.21

25.61 ± 5.53

0.292

0.488

0.295

0.927

 < Ar-Go-Me

132.46 ± 4.46

128.92 ± 5.79

134.69 ± 4.81

0.027*

0.185

0.508

0.016*

 ANS-Me (mm)

67.38 ± 6.07

63.30 ± 4.69

60.69 ± 4.40

0.006**

0.114

0.004**

0.408

Dentoalveolar measurements

 < UI-SN

113.61 ± 5.51

112.30 ± 7.83

107.76 ± 10

0.164

0.902

0.168

0.322

 < IMPA

85.46 ± 6.33

84.76 ± 8.91

81.92 ± 9.07

0.519

0.971

0.529

0.657

Measurements for assessment of condyle inclination

 < CondAx-Vert T

22.15 ± 3.69

19.30 ± 6.35

24.23 ± 4.08

0.045*

0.304

0.528

0.033*

 < CondAx-SBL

69.30 ± 4.97

72.92 ± 7.34

66.92 ± 3.40

0.028*

0.221

0.512

0.022*

 < CondAx-ML

139.30 ± 6.87

135.38 ± 8.18

139.69 ± 4.80

0.219

0.319

0.988

0.249

 < Ar-Go-Vert T

14.84 ± 5.45

12.61 ± 4.35

20.46 ± 2.43

0.008**

0.383

0.009**

0.003**

  1. *Significant
  2. **Highly significant