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Mag. int. coll. dent ; 7(1): 16-22, jan. 2000. graf
Article in Spanish | LILACS | ID: lil-290351

ABSTRACT

The purpose of this epidemiological study was to find correlation among dental caries and S. mutans in schoolchildren from a Protection Center. Quantitative and semiquantitative methods were employed to determine salivary concentration of mutans streptococci. The results showed that 44 percent of children had 1-3 dental caries, while 23 percent had 4-7. A direct relationship was found with the concentration of mutans streptococci in saliva. Both methods employed showed that the caries risk level, can be stabilized approximately in 5 x 105 UFCf S. mutans/mL saliva. Biochemical and serological characterisation of the isolated streptococci mutans group revealed that 95 percent was of biotype I, serotype c (c, e, f) belonged to S. mutans specie, and of 5 percent was S. sobrinus biotype IV, serotype (d, g, h). A direct correlation between decalcified areas and the quantity of salivary S. mutans was also found. Based in these results, a prediction about people in risk of develop dental caries, can be made, and so adequate prevention programs, can be established


Subject(s)
Humans , Male , Female , Adolescent , Cariogenic Agents/chemistry , Dental Caries/microbiology , Streptococcus mutans/pathogenicity , Dental Caries , Dental Caries/epidemiology , Saliva/microbiology
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