From: A retrospective comparison of two protocols for correction of skeletal Class III malocclusion in prepubertal children: hybrid hyrax expander with mandibular miniplates and rapid maxillary expansion with face mask
HE-MP
RME–FM
p
Mean
SD
Age at T1
10.24
1.31
10.56
1.41
0.34
Tx duration
15.5
2.80
11.85
3.41
0.001