Backgroud: Mahkota dewa (Phaleria macrocarpa (Scheff.) Boerl) is a traditional plant which conlains flavonoid, saphonin, alkaloid, and pholifenol. Based on previous studies had been known that Jlavonoid was able to dissolve kidney stone calcium. Dentin contains many inorganic materials present in C03 (PO4)2. Flavonoid contained in mahkota dewa fruit suspected capable dissolving calcium of tooth…