Figure 1.

Concentration-response curves for treatment with mangosteen peel extract over different incubation times (1, 3, 6, and 24 h). The vertical axis indicates the Streptococcus mutans biofilm mass in optical density. The horizontal axis indicates the concentration of mangosteen peel extract (100%, 50%, 25%, 12.5%, and 6.25%). Chlorhexidine 0.2% was used as positive control and biofilm well without treatment was used as negative control