The aim of the work was the definition of informativeness of European indicators in a comprehensive assessment of the state of periodontal tissues in children of school age and identification possible relationships with behavioral risk factors for periodontal disease. Analytical dental epidemiology was employed, using the EGOHID-2005 system. Oral hygiene and dental caries were assessed in 12- 15-year-old children in Poltava city. The main determinants of periodontal tissue diseases were non-observance of children a recommended regime of brushing teeth and unhealthy habits. Systematic monitoring of major dental diseases allows to determine their tendencies and, using European system of indicators of dental health, allows to identify the risk factors to be eliminated in order to prevent periodontal tissue diseases.