RADIO-OPAQUE MATERIALS BASED ON HYDROXYAPATITE AND BISMUTH

Abstract

This study relates to a new biocement prepared from mixtures of Bi-substituted hydroxyapatite and calcium sulphate dihydrate using deionized water as liquid phase. The Bi-substituted hydroxyapatite nanopowder was produced by the co-precipitation method using Ca(OH)2, H3PO4 and Bi(NO3)3·5H2O raw materials as calcium, phosphorous and bismuth sources. The XRD diffractograms of the cement powders indicate only hydroxyapatite and CaSO4 phases. This biocement exhibits radio-opacity, thus enhancing its utility in the dental and medical fields.