[Results of youth dentistry. Oral health and oral hygiene habits of children participating in regional institutions].

In order to evaluate the results of Regional Institutions (RI's) for Youth Dentistry, an epidemiological study was performed on caries experience and oral hygiene habits of 5-, 8- and 11-year-olds, getting dental treatment in these institutions. In the big cities participants of the RI's appeared to be mostly from the lower social levels of society and ethnic minority groups. Caries experience and oral hygiene habits of these children were relatively unfavourable. A significant statistical correlation exists between oral hygiene habits and caries experience. Differences between the results of the RI's with respect to the oral health and the oral hygiene habits of the participants can be explained to a large extent by the mentioned social and ethnic differences.