Endodontic treatment failure can be caused by Enterococcus faecalis. The natural resource such as ambon banana (Musa paradisiaca var. sapientum) peel can be used to inhibit the growth of Gram-positive bacteria. Ambon banana (Musa paradisiaca var. sapientum) peel has antibacterial properties because it contains active compounds, such as flavonoid, tannin, saponin, and terpenoid. This study aimed…