Pengaruh Senyawa Flavonoid Buah Naga Merah (Hylocereus polyrhizus) Hasil Destilasi Terhadap Perubahan Warna Basis Gigi Tiruan Resin Akrilik Heat-Cured

Heat-cured acrylic resin is the most widely used denture base material in dentistry. In use, heat-cured acrylic resin can change color. The color changes that occur can be caused by the nature of the acrylic resin, namely porosity and easy absorption of water. Exposure of heat-cured acrylic resin to acidic flavonoid compounds can affect color stability and reduce user aesthetics. The purpose of this study was to determine the effect of the flavonoid active compounds contained in red dragon fruit from distillation on the color change of heat-cured acrylic resin. This research is a kind of experimental laboratory with pre and post test group design research. Extraction of flavonoid compounds in this study used a distillation process to remove dye and obtain pure flavonoid compounds. Measure the color change using a Minolta cr-10 color reader. The results showed that there was a significant color change between the control group and the treatment group. The conclusion of the study is that there are differences in color changes in heat-cured acrylic resins that are soaked for different lengths of time, so the longer the immersion time, the greater the color changes that occur.