Sintesis dan karakterisasi Hidroksiapatit dari Limbah Dental GypsumTipe 2 sebagai Bahan Baku Bone Graft

Abstract

Hydroxyapatite [Ca10(PO4)6(OH)2] has been widely used as bone substitute material because it has similar crystal structure with bone. Hydroxyapatite can be synthesized from many sources including Gypsum (calcium sulphate hemihydrate). In dentistry, gypsum has been used as temporary casts or models and then become wasted. This research aims to process dental gypsum waste as an alternative resource of hydroxyapatite. Dental gypsum waste were meshed into 250 mesh size powder form and then synthesized with diammonium hydrogen phosphate [(NH4)2 HPO4] in microwave. Hydroxyapatite powder were then characterized using FTIR (Fourier Transform-Infra Red spectroscopy), XRD (X-Ray Diffraction) dan SEM (Scanning Electro Microscope). The results showed that synthesized hydroxyapatite has similar characteristics with commercial hydroxyapatite and JCPDS standard.