Skip to main content

Table 2 Skeletal, dental and soft tissue changes from T1 to T2

From: 3D effects of a bone-anchored intra-oral protraction in treating class III growing patient: a pilot study

Variables

T1

T2

T2-T1

Mean

SD

Mean

SD

Mean

SD

p value

Significance

Anterioposterior changes

 SNA (°)

78.37

2.49

80.24

2.92

1.87

1.06

0.000

***

 Vert. T-A (mm)

46.23

8.8

49.57

8.93

3.34

1.54

0.000

***

 SNB (°)

82.11

3.19

80.09

3.53

− 2.02

0.85

0.000

***

 Vert. T-B (mm)

39.57

14.69

36.14

12.95

− 3.43

4.47

0.013

*

 ANB (°)

− 3.75

2.89

0.2

2.77

3.95

0.57

0.000

***

 WITTS appraisal (mm)

-9.63

2.5

− 4.47

2.67

5.16

1.51

0.000

***

 Vertical changes

 Mid-facial height (N-ANS) (mm)

52.27

2.99

54.95

2.35

2.68

1.53

0.447

NS

 Lower facial height (ANS-ME) (mm)

69.44

4.76

72.63

5.34

3.19

2.21

0.000

***

 Upper facial height ratio (N-ANS/N-ME) (%)

44.3

1.88

43.13

1.91

− 1.17

1.21

0.003

**

 Lower facial height ratio (N-ME/ANS-ME) (%)

55.67

1.99

56.87

1.91

1.2

1.24

0.003

**

y-axis (°)

67.38

3.6

69.33

4.08

1.95

1.11

0.000

***

Dentoalveolar changes

 Upper incisors inclination (UI-SN) (°)

104.51

6.6

107.49

6.24

2.98

2.71

0.001

**

 Lower incisors inclination (LI-MP) (°)

84.82

4.97

81.61

3.64

− 3.21

3.4

0.004

*

 Inter-incisal angle (IIA) (°)

135.29

7.17

133.88

5.94

− 1.41

4.55

0.268

NS

 Overjet (OJ) (mm)

− 2.89

1.41

2.74

1.11

5.63

1.36

0.000

***

 Overbite (OB) (mm)

1.57

1.92

0.36

1.46

− 1.21

1.89

0.033

*

Soft tissue profile changes

 Harmony (H) angle (n-me-ls) (°)

6.36

4.47

9.12

3.97

2.76

1.8

0.0001

***