Skip to main content

Advertisement

Table 1 Chephalometric skeletal 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
Maxillary      
SNA angle (°) Treated 80.6 ± 2.4 80.2 ± 2.5 −0.4 ± 1.3 0.1 (−0.6-0.7)
Control 79.8 ± 2.7 79.5 ± 2.8 −0.3 ± 1.5
Difference   NS NS NS NS
A to N perp (mm) Treated 1.8 ± 2.5 1.1 ± 2.9 −0.7 ± 1.6 0.2 (−0.5-0.8)
Control 2.2 ± 2.5 1.8 ± 2.9 −0.4 ± 1.6
Difference   NS NS NS NS
Co-A (mm) Treated 85.1 ± 3.8 87.6 ± 4.3* 2.5 ± 1.9 0.2 (−0.4-0.9)
Control 82.7 ± 3.2 84.7 ± 3.8* 2.0 ± 2.1
Difference   NS p < 0.05 NS NS
Mandibular      
SNB angle (°) Treated 74.2 ± 2.0 74.7 ± 2.3** 0.5 ± 1.0 0.1 (−0.6-0.7)
Control 73.6 ± 2.2 74.0 ± 2.5 0.4 ± 1.2
Difference   NS NS NS NS
Pg to N perp (mm) Treated −6.9 ± 3.9 −7.3 ± 4.5 −0.4 ± 2.0 0.3 (−0.4-0.9)
Control −5.0 ± 3.4 −4.8 ± 4.8 0.2 ± 2.1
Difference   NS NS NS NS
Co-Gn (mm) Treated 103.6 ± 4.6 107.7 ± 5.3*** 4.1 ± 2.2 0.0 (−0.6-0.7)
Control 101.9 ± 4.4 105.9 ± 6.2*** 4.0 ± 3.0
Difference   NS NS NS NS
Maxillo-mandibular      
ANB angle (°) Treated 6.5 ± 1.5 4.8 ± 0.9*** −1.7 ± 1.2 0.8 (−0.1-1.5)
Control 6.2 ± 1.2 5.5 ± 1.1 −0.7 ± 1.3
Difference   NS NS p < 0.05 p < 0.05
Wits (mm) Treated 3.8 ± 1.2 2.4 ± 1.3* −1.4 ± 1.1 0.1 (−0.6-0.8)
Control 3.1 ± 0.8 2.0 ± 2.6 −1.2 ± 2.5
Difference   NS NS NS NS
Max-Mand difference (mm) Treated 18.4 ± 3.3 20.0 ± 2.9*** 1.6 ± 1.4 0.3 (−0.4-0.9)
Control 19.2 ± 2.7 21.3 ± 4.3* 2.1 ± 2.1
Difference   NS NS NS NS
Vertical      
FH-palatal plane angle (°) Treated −2.9 ± 3.4 −2.3 ± 3.8 0.6 ± 1.2 0.4 (−0.3-1.1)
Control −4.6 ± 3.1 −4.5 ± 2.8 0.1 ± 1.3
Difference   NS NS NS NS
FH-mandibular plane angle (°) Treated 22.5 ± 4.9 22.2 ± 5.1 −0.3 ± 1.1 0.4 (−0.3-1.1)
Control 22.2 ± 4.9 22.5 ± 4.6 0.2 ± 1.3
Difference   NS NS NS NS
Palatal plane-mandibular plane (°) Treated 25.4 ± 3.1 24.4 ± 3.0** −0.9 ± 1.3 0.6 (−0.0-1.3)
Control 26.8 ± 5.3 26.9 ± 4.9 0.1 ± 1.7
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 differences with the corresponding baseline value: *p < 0.01, **p < 0.05, ***p < 0.001.