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Table 1 Descriptive statistics and statistical comparisons of starting forms (ANOVA with Tukey’s post hoc tests)

From: Mandibular response after rapid maxillary expansion in class II growing patients: a pilot randomized controlled trial

Variables

RME bonded (1) (n = 10)

RME banded (2) (n = 10)

Controls (3) (n = 10)

P

1 vs 2

2 vs 3

1 vs 3

Mean

SD

Mean

SD

Mean

SD

Age

8.1

0.6

8.1

0.6

8.0

0.8

0.977

0.0

0.1

0.1

Sagittal skeletal

 SNA (deg)

79.2

3.5

81.3

2.6

82.2

3.7

0.147

− 2.1

− 0.9

− 3.0

 SNB (deg)

74.4

3.6

76.2

2.8

76.4

3.8

0.196

− 1.8

− 0.2

− 2.0

 ANB (deg)

4.6

1.2

5.1

1.2

5.8

1.5

0.152

− 0.5

− 0.7

− 1.2

 Pg to NPerp (mm)

− 9.1

2.7

− 7.1

2.5

− 7.9

3.8

0.356

− 2.0

0.8

− 1.2

 Co-Gn (mm)

93.8

3.5

91.3

4.2

93.5

5.8

0.442

2.5

− 2.2

0.3

Vertical skeletal

 SN to mandibular plane (deg)

33.8

4.3

33.6

5.6

30.7

5.2

0.334

0.2

2.9

3.1

 ArGoMe (deg)

129.5

3.6

128.2

6.8

127.5

2.8

0.641

1.3

0.7

2.0

 LAFH (mm)

51.6

2.9

51.6

3.0

51.3

3.1

0.972

0.0

0.3

0.3

Interdental

 Overjet (mm)

5.4

1.2

5.9

2.2

5.6

1.6

0.796

− 0.5

0.3

− 0.2

 Overbite (mm)

0.6

0.9

0.7

1.9

1.8

1.3

0.124

− 0.1

− 1.1

− 1.2

 Molar relationship (mm)

− 2.9

0.9

− 2.3

1.3

− 2.9

1.2

0.465

− 0.6

0.6

0.0

  1. deg degrees
  2. P < 0.05