[Effect of fluoride prophylaxis on oral hygiene and condition of gingivae in school-children].

The purpose of the study was assessment of exogenous organic and inorganic preparations of fluorides and their effects on the oral hygiene and condition of the gingivae in children living in an area with fluoridated drinking water and in another area without water fluoridation. The preparations were applied locally by brushing during 5 procedures at two-week intervals in the first and second years of the experiment. The oral hygiene was assessed by means of the plaque index and the condition of the gingivae by means of the gingival index. In the light of the obtained results it is regarded that these procedures had a favourable effect on the determined indices, and these effects were similar for both types of preparations.