Effect of different chlorhexidine varnish regimens on mutans streptococci levels in interdental plaque and saliva

Caries Research
S Twetman, L G Petersson

Abstract

The aim of the present study was to evaluate and compare the effects of an intensive and a monthly mode of antibacterial varnish application on the levels of mutans streptococci (MS) in interdental plaque and whole saliva. Eighty-eight healthy schoolchildren (11-13 years) with high scores of salivary MS were selected by a screening procedure and randomised into two groups, MS were enumerated at all mesial interdental sites of the first permanent molars with the aid of a modified chair-side technique, disclosing a total of 161 sites with moderate or high colonisation levels. The subjects were treated with a 1% chlorhexidine-thymol-containing varnish (Cervitec) either in an intensive mode (IM) with 3 applications within a 2-week period or in a monthly mode (MM) during a 3-month period. The varnish was applied with a miniball burnisher after the teeth had been cleaned interdentally with dental floss and dried with air. Follow-up samples of saliva and plaque from the interdental areas were collected after 1, 3 and 6 months. Both groups exhibited a statistically significant (p > 0.05) reduction of interdental MS after 1 month when compared with baseline. An eliminated MS growth appeared more frequently following the IM compared with...Continue Reading

Citations

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