Comparison of Activator-Headgear and Twin Block Treatment Approaches in Class II Division 1 Malocclusion

Table 2

Gender, age, and treatment duration of the Twin Block (TB), Activator headgear (AH) and untreated, control (CTRL) group.

	Treatment group
	TB	AH	CTRL
Female gender (; percentage)	15 (60)	13 (52)	28 (56)	0.850
Age before treatment (years)
Median (interquartile range)	11 (10–12)	10 (9–11)	11 (10-11)	0.336
Min–max	9–13	8–12	8–13
Mean observation period (months)
Mean ± std. deviation	14.2 ± 4.8	15.4 ± 5.5	14.9 ± 5.2	0.745
Min–max	8–24	12–24	10–24

test. Kruskal-Wallis test. ANOVA.