Table 3. Postero-anterior cephalometric measurements of the groups at T₁ (pre-treatment), T₂ (post-treatment) and T₃ (3 years post-treatment) periods.

Variables	T1	T2	T3	T2-T1	T3-T2	T3-T1
	mean±SD/ median (min-max)	mean±SD/ median (min-max)	mean±SD	pa	pa	pa	pb
UR6-ML (mm)							0,252
Group 1	27.98±1.86	29.86±2.18	26.53±1.41	0.013*	0.0001*	0.922
Group 2	30.13±1.79	31.23±2.22	27.98±2.73	0.019*	0.000*	0.301
UR6-ML (degrees)							0.164
Group 1	24.47±2.97	30.01±2.67	24.26±3.03	0.013*	0.0001*	0.922
Group 2	26.96 (16.18-30.64)	29.61 (20.57-31.77)	24.52±3.49	0.003*	0.0001*	1.000
UL6-ML (mm)							0.501
Group 1	28.57±1.22	29.61±1.23	26.33±0.99	0.074	0.0001*	0.074
Group 2	29.31±2.10	30.78±1.74	27.53±2.53	0.010*	0.0001*	0.604
UL6-ML (degrees)							0.055
Group 1	27.62±3.64	31.68±3.03	26.20±4.12	0.002*	0.0001*	1.000
Group 2	26.79±3.82	29.44±2.97	26.73±2.32	0.002*	0.006*	1.000
UR6-UL6 (mm)							0.831
Group 1	56.97±2.64	59.34±2.80	53.71±2.16	0.043*	0.0001*	0.199
Group 2	59.59±3.45	61.73±3.56	56.62±5.40	0.002*	0.0001*	1.000

*Statistically significant (p< 0,05).

a: Friedman test, comparison of pre-treatment, post-treatment and 3 years post-treatment measurements within the groups.

b: Two-way repeated ANOVA measure test, comparison of groups.