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Progress in Orthodontics

Table 4 Descriptive statistics and statistical comparisons of the T2-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)

−0.6

1.1

−0.5

1.2

0.1

0.876

 Co ver (mm)

0.3

1.1

0.0

1.3

0.3

0.489

 A hor (mm)

0.8

1.5

0.3

1.8

0.5

0.276

 B hor (mm)

0.7

1.8

0.9

1.8

−0.2

0.752

 Pg hor (mm)

0.7

2.1

1.0

2.1

−0.3

0.598

 Me ver (mm)

1.4

2.3

1.2

1.0

0.2

0.681

 Co-A (mm)

1.5

1.7

1.0

1.3

0.5

0.228

 Co-Gn (mm)

1.8

2.2

1.6

1.6

0.2

0.737

 Co-Go (mm)

1.6

2.7

2.0

2.5

−0.4

0.556

 Go-Me (mm)

1.0

2.7

0.8

2.0

0.2

0.868

 SNA (°)

0.4

1.0

−0.3

1.0

0.7

0.042

 SNB (°)

0.3

0.9

0.1

0.8

0.2

0.504

 SNPog (°)

0.7

0.9

0.1

0.9

0.6

0.482

 ANB (°)

0.1

0.9

−0.4

0.8

0.5

0.118

 pp to T-FMN (°)

0.0

1.0

0.1

1.8

−0.1

0.880

 ml to T-FMN (°)

−0.7

1.5

−0.8

1.7

0.1

0.740

 Co-Go-Me (°)

−0.5

1.9

−0.6

1.6

0.1

0.875

Dental measures

      

 Overjet (mm)

0.7

1.0

−0.5

1.2

1.2

0.000

 Overbite (mm)

1.4

1.2

0.0

0.7

1.4

0.000

 ms hor (mm)

2.1

2.5

0.8

1.7

1.3

0.055

 ms ver (mm)

1.5

1.6

0.9

1.0

0.6

0.077

 Upper molar tipping (°)

4.4

4.5

1.7

3.6

2.7

0.028

 mi hor (mm)

0.4

1.7

0.9

1.6

−0.5

0.342

 mi ver (mm)

0.8

1.8

0.6

1.0

0.2

0.774

 is hor (mm)

0.6

1.8

0.2

1.6

0.4

0.418

 is ver (mm)

1.2

1.6

0.5

1.0

0.7

0.110

 ii hor (mm)

−0.1

1.5

0.7

1.4

−0.8

0.075

 ii ver (mm)

−0.2

1.9

0.5

0.8

−0.7

0.192

 Upper incisor inclination (°)

−0.6

3.3

−1.0

2.6

0.4

0.666

 Lower incisor inclination (°)

−3.2

3.9

−0.6

2.5

−2.6

0.013

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