[Plaque flora and dental caries. I. Occurrence of Streptococcus sanguis types in caries-free and caries susceptible school children].

The reported results suggest that changes in dental plaque flora and its importance for cariesinitiation in man can only be learned about by 1) investigation into different pre- and early caries phases, 2) by still more differentiation of potentially cariogenic microorganisms, according to their biochemical behavior, and 3) by considering other factors influencing the dental plaque flora like toothbrushing habits. The data presented suggest that Strep. sanguis type I and IIW might cause cariesinitiation with daily toothbrushing individuals.