Forty children with ages of 7 and 8 years were selected for this investigation. They were classified in two groups according to wether the DMF-S and dmf-s indexes were equal or greater than zero. Samples of total stimulated saliva were obtained for the quantification of salivary IgA through the single radial immunodifusion technique, and of the salivary levels of mutans streptococci and lactobacilli. The results revealed that the concentrations of immunoglobulin were not different between the two groups, although they presented a positive correlation statistically significant at the 5% level with the salivary levels of lactobacilli for children with DMF-S and dmf-s indexes equal to zero.
Immunoglobulins; Mutans streptococci; Lactobacilli; Dental caries