PENGARUH PENAMBAHAN SERAT KACA DAN SERAT POLIPROPILEN TERHADAP KEKUATAN IMPAK DAN TRANSVERSAL PADA BAHAN BASIS GIGI TIRUAN RESIN AKRILIK POLIMERISASI PANAS: EFFECT OF GLASS FIBERS AND POLYPROPYLENE FIBERS ON IMPACT AND TRANSVERSE STRENGTH OF HEAT POLYMERIZED POLYMETHYL METHACRYLATE DENTURE BASE RESIN - Dwi Tjahyaning Putranti (TALENTA, 2014)