Prevalence of malocclusions, oral habits and orthodontic treatment need in a 7- to 15-year-old schoolchildren population in Tirana

Progress in Orthodontics

Table 3 Prevalence of malocclusions in the total sample ( n = 2,617)

Malocclusions	Number	Percentage	Confidence interval inferior (%)	Confidence interval superior (%)
Class 1	1,058	40.4	37.4	43.4
Class 2	764	29.2	26.0	32.4
Class 3	85	3.2	−0.5	6.9
Asymmetries	710	27.1	23.8	30.4
Total	2,617	100.0	100.0	100.0