Mouth-rinsing with chlorhexidine causes a delayed, temporary increase in the levels of oral viridans streptococci

The indigenous oral flora of 27 volunteers was monitored longitudinally over a 4-week period. Bacteria attached on buccal epithelial cells were counted by microscopy. Salivary bacterial colonies and the presence of alpha-hemolysis were examined after aerobic culturing on blood agar plates. The bucca...

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