[Relations between sodium fluoride sensitivity and cariogenic potential in Streptococcus mutans].

Supragingival plaque samples of a group of 59 schoolchildren were taken. The samples were cultivated on a selective medium for Streptococcus mutans and the isolated wild strains were tested for resistance to sodium fluoride (NaF). The results show the existence of a positive statistic correlation between the degree of resistance to NaF caries experience, obtained by DMFS of the experimental group.