Table 4.

Skeletal and dental changes in molar relationship and overjet

Variable(mm)	Vanbeek	Herbst	Twin-Block	Ma	Control	P
	Median/IQR	Median/IQR	Median/IQR	Median/IQR	Median/IQR
ABCH†	2.05/0.90a	3.60/1.40a	2.65/2.20a	2.59/3.20a	0.20/1.40b	0.000*
Maxillary Osseous base†	− 0.50/1.30	− 0.80/2.00	− 0.40/1.00	− 0.98/3.00	− 1.75/1.30	0.059
Upper Molar†	0.75/1.20ab	1.30/1.00a	0.00/1.60bc	− 1.58/2.80c	− 0.50/1.00c	0.000*
Lower Molar†	0.60/0.90b	2.80/2.40a	1.30/1.20ab	0.37/2.90b	0.40/1.50b	0.008*
Upper Incisor†	1.25/2.20a	0.90/0.80ab	0.90/1.70ab	2.35/2.50a	0.00/1.30b	0.011*
Lower Incisor†	0.00/0.90b	1.20/1.60a	1.25/1.20a	0.10/3.50b	− 0.20/1.80b	0.002*

^†Non parametric test. Groups with the same letter indicated no statistically significant difference. *P < 0.05