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Table 5 Descriptive statistics and statistical comparisons of the T1-T3 changes

From: Mechanisms of Class II correction induced by the crown Herbst appliance as a single-phase Class II therapy: 1 year follow-up

Cephalometric measures

cHerbst group

Control group

Net change

P value

 

Mean

SD

Mean

SD

Skeletal measures

      

 Co hor (mm)

−1.5

1.5

−1.0

1.5

−0.5

0.240

 Co ver (mm)

0.6

1.5

0.9

1.7

−0.3

0.401

 A hor (mm)

1.3

1.8

1.3

2.0

0.0

0.886

 B hor (mm)

2.4

2.6

1.8

2.5

0.6

0.467

 Pg hor (mm)

2.5

2.9

2.4

3.1

0.1

0.837

 Me ver (mm)

4.9

3.0

3.8

3.4

1.1

0.221

 Co-A (mm)

3.2

2.3

2.3

2.1

0.9

0.172

 Co-Gn (mm)

5.8

2.9

4.3

3.4

1.5

0.082

 Co-Go (mm)

4.4

3.8

3.1

2.5

1.3

0.214

 Go-Me (mm)

2.4

3.4

2.1

3.0

0.3

0.752

 SNA (°)

0.1

1.2

−0.1

1.6

0.2

0.549

 SNB (°)

1.1

1.1

0.2

1.3

0.9

0.014

 SNPog (°)

1.0

1.1

0.4

1.3

0.6

0.104

 ANB (°)

−1.0

1.2

−0.4

0.7

−0.6

0.035

 pp to T-FMN (°)

0.7

1.1

−0.4

1.8

1.1

0.005

 ml to T-FMN (°)

−0.4

2.1

−0.7

1.7

0.3

0.488

 Co-Go-Me (°)

0.0

2.7

0.1

2.5

−0.1

0.923

Dental measures

      

 Overjet (mm)

−2.0

1.6

−0.6

1.6

−1.4

0.003

 Overbite (mm)

−1.4

1.0

−0.4

1.0

−1.0

0.000

 ms hor (mm)

0.6

2.7

2.0

2.5

−1.4

0.065

 ms ver (mm)

3.0

1.9

2.5

2.3

0.5

0.332

 Upper molar tipping (°)

−1.2

4.8

3.1

5.1

−4.3

0.003

 mi hor (mm)

4.1

2.3

2.0

2.4

2.1

0.003

 mi ver (mm)

3.6

2.1

2.3

2.3

1.3

0.078

 is hor (mm)

0.8

2.4

1.2

2.1

−0.4

0.527

 is ver (mm)

2. 8

1.9

1.6

2.0

1.2

0.041

 ii hor (mm)

2.8

2.1

1.7

2.1

1.1

0.058

 ii ver (mm)

4.2

2.1

2.0

2.3

2.2

0.001

 Upper incisor inclination (°)

−2.9

4.9

−0.6

2.9

−2.3

0.081

 Lower incisor inclination (°)

1.4

4.6

−1.4

4.0

2.8

0.026