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Table 3 Intergroup comparison at the pretreatment stage (t tests)

From: Dentoskeletal and soft tissue changes in class II subdivision treatment with asymmetric extraction protocols

 

Group 1—3 extractions (n = 31)

Group 2—1 extraction (n = 32)

 

Variables

Mean

S.D.

Mean

S.D.

P

Maxillary component

 SNA (°)

84.10

4.10

83.28

4.04

0.429

 Co-A (mm)

82.65

3.81

83.41

3.53

0.415

Mandibular component

 SNB (°)

79.32

3.98

79.26

3.06

0.946

 Co-Gn (mm)

110.95

4.59

111.96

5.89

0.451

Maxillomandibular relationship

 ANB (°)

4.77

1.75

4.02

2.19

0.137

 NAP (°)

171.65

4.39

172.88

4.11

0.254

Growth pattern

 SN.GoGn (°)

29.19

3.96

27.86

4.36

0.210

 LAFH (mm)

63.43

4.33

62.32

4.41

0.316

Maxillary dentoalveolar component

 Mx1.NA (°)

24.45

5.49

25.75

7.16

0.423

 Mx1-NA (mm)

5.53

2.44

5.50

3.86

0.971

 Mx1-PP (mm)

28.40

2.23

26.81

2.95

0.018a

 Mx6-PP (mm)

20.35

2.36

19.43

1.98

0.098

 Mx Molar asymmetry (mm)

1.99

0.33

2.19

0.39

0.025a

Mandibular dentoalveolar component

 Md1.NB (°)

28.82

5.01

27.85

6.02

0.489

 Md1-NB (mm)

5.87

1.41

5.94

2.10

0.872

 IMPA (°)

97.56

5.83

99.22

7.93

0.350

 Md1-GoGn (mm)

35.97

2.29

35.46

2.86

0.442

 Md6-GoGn (mm)

26.83

2.19

27.32

2.33

0.387

 Md Molar asymmetry (mm)

2.09

0.46

1.79

0.57

0.025a

Dental relationship

 Overjet (mm)

4.88

1.80

4.96

1.78

0.856

 Overbite (mm)

1.89

2.31

1.97

1.10

0.863

Upper lip

 UL-S line (mm)

2.41

2.42

1.41

1.98

0.077

 Prn-H (mm)

0.91

4.56

3.31

4.00

0.030a

Lower lip

 LL-S line (mm)

3.50

3.04

1.95

2.46

0.029a

Facial convexity and nasolabial angle

 Z Angle (°)

75.85

5.51

73.92

6.61

0.214

 N’.Sn.Pog’(°)

156.08

5.13

157.63

6.07

0.276

 Cm.Sn.UL (°)

105.07

8.93

101.23

8.26

0.081

  1. aStatistically significant at P < 0.05