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Table 6 Comparison of changes in the treatment group (T2 − T1) vs. control group (t2 − t1) in the pooled subjects

From: Treatment effects of a fixed intermaxillary device to correct class II malocclusions in growing patients

 

Pooled (males and females)

Variable

Control (t2 − t1)

Treated (T2 − T1)

pvalue

 

Significance

Mean

SD

Mean

SD

Difference

Sagittal

       

 OLp-Apt

5.1

2.5

3.9

2.4

0.1148

−1.2

NS

 OLp-Pg

6.6

3.1

7.3

3.9

0.5216

0.7

NS

 OLp-Co

1.0

1.7

1.5

2.0

0.4038

0.5

NS

 Co-Apt

6.2

3.3

5.4

3.2

0.4360

−0.8

NS

 Co-Gn

9.3

3.7

10.4

4.1

0.3453

1.1

NS

 Co-Gn minus Co-Apt

3.1

2.2

5.0

2.3

0.0086

1.9

*

 Wits

0.5

1.5

−2.2

1.9

0.0001

−2.7

*

 Is-OLp

5.6

2.7

2.9

4.6

0.0218

−2.6

*

 Ii-OLp

5.5

2.5

7.5

3.0

0.0212

2.0

*

 Overjet

0.1

1.3

−4.5

2.9

0.0001

−4.6

*

 Ms-OLp

6.4

2.8

4.8

3.5

0.0928

−1.6

NS

 Mi-OLp

7.0

2.9

8.9

3.6

0.0495

2.0

*

 Molar relationship

−0.5

1.2

−4.1

1.9

0.0001

−3.6

*

Vertical

       

 Ols-Apt

3.2

1.7

2.8

1.9

0.5570

−0.3

NS

 ANS-Me

4.8

2.5

5.1

3.6

0.7537

0.3

NS

 Is-NL

1.6

1.6

1.2

1.9

0.4031

−0.4

NS

 Ii-ML

3.2

1.6

1.8

3.0

0.0680

−1.4

NS

 Overbite

0.2

1.4

−1.8

1.1

0.0001

−2.0

*

 Msc-NL

3.0

1.5

2.6

1.8

0.4641

−0.4

NS

 Mic-ML

2.6

1.6

4.0

2.0

0.0126

1.4

*

Angular

       

 SNA

1.6

1.8

0.1

1.2

0.0013

−1.5

*

 SNB

1.4

1.3

1.7

1.3

0.5147

0.3

NS

 ANB

0.2

1.2

−1.5

1.2

0.0001

−1.8

*

 SNL-NL

0.2

1.8

−0.4

1.9

0.2456

−0.6

NS

 SNL-ML

−0.7

1.4

−1.6

2.6

0.1634

−0.9

NS

 SNL-Olf

−2.0

3.1

−0.8

2.2

0.1382

1.2

NS

 Is/NL

−0.1

3.1

2.8

22.0

0.5489

2.9

NS

 Ii/ML

−0.6

3.4

3.9

4.6

0.0005

4.5

*

 Inter-incisal angle

1.7

5.8

−1.3

11.5

0.2744

−3.0

NS