Background: The main bacteria that causes dental caries is Streptococcus mutans. Pineapple fruit has the potential as an antibacterial agent that can inhibit or even kill the growth of Streptococcus mutans and can be made as a product like jelly candy. This study aimed to determine the antibacterial activity of pineapple fruit (Ananas comosus) jelly candy on the growth of Streptococcus mutans. …