Objective: of this study to evaluat the effects of fluoride varnish, propolis based chitosan varnish and salvadorapersica varnish on streptococcus mutans and lactobacilli count.Subjects & Methods: The sample size wsa estimated to be 48 randomly selected Egyptian children were divided into 4 equal groups: Group A: Fluor protector (F varnish) (n = 12).Group B: Propolis-based chitosan varnish (n = 12...