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Table 2 Chephalometric dental parameters of the groups and corresponding changes ( n = 17 per group)

From: Skeletal and dental effects produced by functional regulator-2 in pre-pubertal class II patients: a controlled study

Parameter

Group

Time point

Changes

ES coefficient

T0

T1

Molar relationship (mm)

Treated

−1.3 ± 1.7

0.9 ± 1.5*

2.2 ± 2.2

1.0 (0.3-1.7)

Control

−1.8 ± 1.7

−1.4 ± 1.7

0.4 ± 1.1

Difference

 

NS

p < 0.001

p < 0.01

p < 0.01

U1/FH angle (°)

Treated

116.6 ± 5.7

112.8 ± 5.9*

−3.8 ± 3.7

1.1 (0.4-1.8)

Control

113.0 ± 9.3

114.6 ± 8.2

1.5 ± 5.3

Difference

 

NS

NS

p < 0.01

p < 0.01

L1/Mandibular plane angle (°)

Treated

98.5 ± 5.7

101.8 ± 5.1*

3.3 ± 3.5

0.7 (0.0-1.3)

Control

95.4 ± 5.7

95.9 ± 4.8

0.5 ± 4.8

Difference

 

NS

p < 0.001

NS

p < 0.05

Overjet (mm)

Treated

8.3 ± 1.5

5.3 ± 1.4**

−3.1 ± 1.3

2.1 (1.3-2.9)

Control

7.5 ± 2.1

7.3 ± 2.4

−0.2 ± 1.4

Difference

 

NS

p < 0.05

p < 0.001

p < 0.01

Overbite (mm)

Treated

2.8 ± 1.6

3.7 ± 1.5

0.9 ± 2.1

0.2 (−0.5-0.8)

Control

3.6 ± 1.9

4.2 ± 1.5

0.6 ± 1.4

Difference

 

NS

NS

NS

NS

  1. Data are presented as mean ± SD or mean (95% confidence interval). For the ES coefficient, the null hypothesis is to be equal to zero. NS, difference not statistically significant. Significant difference with the corresponding baseline value: *p < 0.01, **p < 0.001.