The effect of chlorhexidine-thymol and fluoride varnishes on the levels of in saliva in children aged 6-8 years.

Background: Streptococcus mutans is considered as the main pathogenic factor for initiation and progression of dental caries. Fluoride is one of the most effective agents used to control caries. Chlorhexidine (CHX) is the most antimicrobial agent against S.