[Oral hygiene of handicapped subjects in Flanders]. 
As part of an epidemiology survey within the population of handicapped 12-year old in Flanders this article describes several parameters related to oral health.  On the average, it became obvious that oral hygiene had to be seriously increased.  The presence of plaque and calculus is very typical for types 1, 2, 4 and 8.  In addition, it is most striking to conclude that groups where a maximum of self-handiness is expected, do not score any better.  The application of chemical controlling agents and the use of fluoride supplements is found extremely low.  Finally, a lack was found, with respect to adequate oral hygiene instructions.  There is a real need for in-service training programs for educators as well as for parents.