[Incidence of maxillary orthopaedic anomalies in adolescents]

Within the framework of an epidemiological survey of the state of dentition the authors examined some 4% of adolescents in the East Slovakian region (aged 15-18 years). The authors recorded the following values according to Angle's classification: A II/1-14.3% A II/2-7.5% A III-3.1%. Abnormal position of the frontal teeth: retrusion-8.2% protrusion-12.2% cramming-19.7%. Incidence of malocclusion: deep occlusion-23.8% labial occlusion-4.4% open occlusion-5.8% crossed occlusion-7.3%. Diastema with normal position of the frontal teeth-7.9%. The authors evaluate the total incidence of maxillary orthopaedic defects-70.2%-as very high.