Phaleria macrocarpa Scheff. Boerl. is used as traditional medicine in Indonesia. The leaf extract in ethanol of this species had been reported as inhibit the growth of Streptococcus mutans. In this experiment the leaf extract was prepare by maceration of the P. macrocarpa foliage, then the extract was fractionate to obtain the ethanol fraction.. The antibacterial activity test who carried out b…