SKKD No. 117/UN25.5.1/TU.3/2019 "SKKD No. 116/UN25.5.1/TU.3/2019 "Perbandingan Daya Tembus Pewarna antara Disclosing Solution dengan Ekstrak Daging Buah Naga Merah (Comparison of Color Penetration between Disclosing Solution and Red Dragon Fruit Extract)" (1)