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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