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Table 5 Prevalence of malocclusions by age (7 to 15 years)

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

Malocclusions by age (years) Class 1 Class 2 Class 3 Asymmetries Total
  n(%) n(%) n(%) n(%) n(%)
7 161 (15.2) 50 (6.5) 6 (7.0) 52 (7.3) 269 (10.3)
8 112 (10.6) 61 (8.0) 10 (11.8) 58 (8.2) 241 (9.2)
9 132 (12.5) 71 (9.3) 10 (11.8) 75 (10.6) 288 (11.0)
10 112 (10.6) 76 (9.9) 11 (12.9) 72 (10.1) 271 (10.3)
11 95 (9.0) 105 (13.7) 11 (12.9) 76 (10.7) 287 (11.0)
12 112 (10.6) 86 (11.2) 5 (5.9) 90 (12.7) 293 (11.2)
13 108 (10.2) 103 (13.4) 8 (9.4) 87 (12.2) 306 (11.7)
14 125 (11.8) 112 (14.6) 10 (11.8) 99 (13.9) 346 (13.2)
15 101 (9.5) 100 (13.0) 13 (15.3) 101 (14.2) 315 (12.0)
Total 1,058 (100.0) 764 (100.0) 85 (100.0) 710 (100.0) 2,617 (100.0)