Skip to main content

Table 2 Intragroup comparison of skeletal, dental, soft tissue, pharyngeal airway, cervical posture, hyoid bone position, and soft palate changes

From: Dentoalveolar, skeletal, pharyngeal airway, cervical posture, hyoid bone position, and soft palate changes with Myobrace and Twin-block: a retrospective study

 

Myobrace T0–T1

Twin block T0–T1

Parameters

Mean ± SD (T0)

Mean ± SD (T1)

p

Mean ± SD (T0)

Mean ± SD (T1)

p

SNA (°)

82.16 ± 2.66

82.36 ± 2.73

0.415

79.21 ± 3.03

78.77 ± 3.45

0.001*

SNB (°)

75.73 ± 2.67

76.34 ± 2.47

0.004*

73.95 ± 3.19

75.26 ± 3.56

0.001*

ANB (°)

6.40 ± 1.57

6.02 ± 1.81

0.178

5.26 ± 1.50

3.51 ± 1.61

0.001*

U1–NA (mm)

5.01 ± 1.49

3.83 ± 2.25

0.020*

5.03 ± 1.70

4.37 ± 5.97

0.050a*

U1/NA (°)

24.16 ± 8.14

19.17 ± 7.33

0.020*

23.36 ± 7.31

21.03 ± 5.43

0.003a*

L1–NB (mm)

5.51 ± 1.52

6.05 ± 1.53

0.026*

4.30 ± 1.88

5.90 ± 2.09

0.001*

L1/NB (°)

27.40 ± 5.64

30.47 ± 5.79

0.003*

23.77 ± 6.05

27.56 ± 4.46

0.001*

Pg–NB (mm)

2.48 ± 1.59

3.02 ± 2.54

0.146

2.29 ± 1.13

2.23 ± 1.19

0.001*

SN/GoGn (°)

29.95 ± 6.42

30.61 ± 6.58

0.429

31.48 ± 5.65

32.42 ± 6.14

0.001*

Interincisal Angle

122.03 ± 10.08

120.33 ± 9.33

0.279

127.59 ± 12.06

122.88 ± 7.47

0.010*

FMA (°)

22.59 ± 5.79

23.25 ± 7.14

0.360

24.26 ± 4.33

25.91 ± 5.02

0.001*

FMIA (°)

59.32 ± 5.30

55.82 ± 5.90

0.006*

60.61 ± 7.84

58.45 ± 6.09

0.005*

IMPA (°)

98.08 ± 7.81

100.92 ± 7.99

0.005a*

95.11 ± 6.79

97.64 ± 6.65

0.001*

Cd–Gn (mm)

103.33 ± 6.48

105.64 ± 10.98

0.248

100.23 ± 5.68

105.00 ± 7.13

0.003*

Go–Pg (mm)

65.00 ± 5.99

66.61 ± 7.57

0.188

63.47 ± 4.64

66.15 ± 4.13

0.010a*

Cd–Go (mm)

52.07 ± 5.16

53.50 ± 8.81

0.280

50.08 ± 5.27

53.01 ± 5.86

0.001*

U1/SN (°)

106.31 ± 8.04

101.43 ± 7.83

0.021*

102.58 ± 7.56

100.81 ± 6.39

0.005*

U1/PP (°)

114.48 ± 8.07

110.36 ± 7.36

0.059

111.48 ± 8.00

108.11 ± 6.50

0.157

FH/MP (°)

22.59 ± 5.79

23.25 ± 7.14

0.360

24.26 ± 4.33

23.91 ± 5.02

0.001*

Overbite

0.48 ± 0.46

0.38 ± 0.49

0.407a

0.72 ± 0.59

0.51 ± 0.56

0255a

Overjet

7.47 ± 1.46

4.55 ± 2.23

0.001*

6.94 ± 2.55

3.95 ± 1.75

0.216

NAPg (°)

169.26 ± 4.58

171.01 ± 6.32

0.042*

171.30 ± 4.12

175.01 ± 4.41

0.001*

SNPg (°)

77.15 ± 2.89

78.08 ± 3.24

0.003*

75.26 ± 3.21

76.51 ± 3.67

0.001*

MeGoArticulare

128.26 ± 6.19

127.60 ± 7.27

0.248

127.39 ± 5.84

126.18 ± 5.60

0.001*

Gla-Sub-Pg (°)

157.10 ± 6.69

159.76 ± 5.14

0.011a*

158.51 ± 5.40

162.85 ± 5.83

0.002*

Nasiolabial angle

113.67 ± 27.97

114.21 ± 9.22

0.717a

108.13 ± 10.48

110.61 ± 10.54

0.001*

Mentolabial angle

104.94 ± 15.35

113.30 ± 19.13

0.005*

111.07 ± 23.50

123.41 ± 19.43

0.003a*

Upper lip—E line

1.72 ± 2.15

1.89 ± 1.25

0.407a

1.98 ± 1.54

2.23 ± 1.78

0.731

Lower lip—E line

2.69 ± 2.59

1.90 ± 1.42

0.260a

1.74 ± 1.24

0.23 ± 1.60

0.382

PNS–AD2 (mm)

17.03 ± 44.13

21.54 ± 48.45

0.157a

20.09 ± 48.27

63.39 ± 146.92

0.485a

PNS–AD1 (mm)

22.48 ± 5.04

22.71 ± 4.66

0.671

22.51 ± 2.48

22.80 ± 3.01

0.776a

AD1–Ba

18.05 ± 3.32

18.65 ± 4.08

0.912

18.38 ± 2.32

17.73 ± 3.20

0.678

AD2–H (mm)

27.23 ± 4.39

27.80 ± 3.93

0.334a

26.23 ± 5.52

36.05 ± 27.65

0.069a

PNS–Ba (mm)

40.68 ± 5.19

40.80 ± 5.56

0.930

40.58 ± 3.44

40.78 ± 2.91

0.196a

Ptm–Ba (mm)

43.20 ± 4.49

42.88 ± 5.84

0.758

43.14 ± 3.18

41.83 ± 4.10

0.148a

PNS–H (mm)

44.16 ± 44.87

49.33 ± 50.48

0.872a

46.32 ± 51.84

99.45 ± 173.51

0.509

SP thickness (mm)

8.84 ± 1.33

9.14 ± 1.51

0.443

8.83 ± 1.31

9.63 ± 1.60

0.070a

SP length (mm)

28.77 ± 3.99

29.67 ± 4.71

0.122a

29.93 ± 3.16

29.35 ± 3.45

0.001*

SP angle (°)

131.90 ± 7.63

129.59 ± 7.48

0.153

133.30 ± 4.42

129.03 ± 5.77

0.006*

SN/OPT (°)

97.56 ± 11.15

100.81 ± 12.39

0.032*

102.45 ± 9.83

104.76 ± 9.98

0.001*

SN/CVT (°)

104.04 ± 10.73

107.73 ± 11.32

0.012*

106.78 ± 8.94

110.33 ± 8.92

0.001*

OPT/HR (°)

89.47 ± 7.27

86.03 ± 20.87

0.409a

93.62 ± 9.08

93.31 ± 9.18

0.986

CVT/HR (°)

95.95 ± 7.17

98.23 ± 9.94

0.192

97.981 ± 8.05

98.90 ± 8.56

0.001*

OPT/CVT (°)

6.48 ± 2.88

6.42 ± 3.31

0.317

15.60 ± 43.92

15.47 ± 3.27

0.036a*

Hi–VR (mm)

11.31 ± 7.06

14.54 ± 10.63

0.324a

8.05 ± 5.32

11.13 ± 7.18

0.105

Hi–HR (mm)

95.68 ± 7.22

97.62 ± 12.53

0.080a

93.12 ± 6.72

95.35 ± 8.20

0.001*

  1. aWilcoxon signed-rank test, *Statistically significant changes (p < 0.05)
  2. SD: Standard deviation, Linear and angular cephalometric points measured: SNA, sella–nasion-point A angle; SNB, sella–nasion-point B angle; ANB, point A–nasion–point B angle; A/OLp, linear position of the maxillary base; Pg/OLp, linear position of the mandibular base; N-A-Pg, angle between points of nasion, A, and pogonion; SN/GoGn, the angle between Sella–nasion and gonion–gnathion planes; Co–A, maxillary length; Co–Gn, mandibular real length; L1–NB, lower incisor-nasion/point B line (mm and angle); IMPA, angle between lower incisor long axis and mandibular plane. 1/NA, upper incisor–nasion/point A line (angle and mm); U1/SN, angle between upper incisor long axis and sella–nasion plane; U1/L1, interincisal angle; Is/OLp, position of the maxillary central incisor; Ii/OLp, position of the mandibular central; Mi/OLp, position of the lower first molar; Ms/OLp, position of the upper first molar; Z angle, porion point/orbital point (Frankfort plane)—line E (Ricketts line profile) angle