Effect of Fluoride Varnish on Streptococcus mutans Count in Saliva of Caries Free Children Using Dentocult SM Strip Mutans Test: A Randomized Controlled Triple Blind Study

摘要

Aims: The aim of this study was to estimate the count of Streptococcus mutans in saliva of caries free children using Dentocult SM strip mutans and to evaluate the effect of fluoride varnish on the Streptococcus mutans count in saliva of these caries free children.Methods and material: Thirty caries free children were selected for the study based on the information obtained from a questionnaire prepared. They were randomly assigned into the control group and the study group consisting of ten and twenty children respectively. Samples of saliva were collected using the saliva strips from the Dentocult SM kit and after incubation the presence of the Streptococcus mutans was evaluated using the manufacturers’ chart. The study group was subjected to Fluor Protector fluoride varnish application after 24 hours following which the samples were collected again.Results: The average Streptococcus mutans count in primary dentition of caries free children was in the range of 10⁴ to 10⁵ colony forming units/ml. The average Streptococcus mutans count in primary dentition of caries free children after Fluor Protector fluoride varnish application was below 10⁴ colony forming units/ml.Conclusion: Fluor Protector fluoride varnish application showed a statistically significant reduction in the Streptococcus mutans count in saliva of the caries free children in the study group.