Pengaruh Senyawa Flavonoid Buah Naga Merah (Hylocereus polyrhizus) Hasil Destilasi Terhadap Perubahan Warna Basis Gigi Tiruan Resin Akrilik Heat-Cured
(Effect of Distillation Result of Flavonoid Compounds of Red Dragon Fruit On Color Changes in Heat-Cured Acrylic Resin Dentures)