LEME, D.R.MORAIS, V.R.RODAS, A.C.D.HIGA, O.Z.YAMAGATA, C.2019-02-212019-02-21LEME, D.R.; MORAIS, V.R.; RODAS, A.C.D.; HIGA, O.Z.; YAMAGATA, C. Synthesis and characterization of bioactive ceramic in CaO-MgO-SiO2 system. In: INTERNATIONAL CONGRESS ON CERAMICS, 7th; CONGRESSO BRASILEIRO DE CERÂMICA, 62., June 17-21, 2018, Foz do Iguaçu, PR. <b>Proceedings...</b> p. 36-45. Disponível em: http://repositorio.ipen.br/handle/123456789/29681.http://repositorio.ipen.br/handle/123456789/29681Na2SiO3 solution and chloride solutions of calcium and magnesium were used as raw materials. HCl was added to Na2SiO3 solution resulting in gel of silica. In order to obtain a mixture of Si gel, Ca2+ and Mg2+, calcium and magnesium solutions were blended into the gel. After adding NaOH to the mixture, Ca2+ and Mg2+ ions precipitated as hydroxides. Subsequently, it was dried to attain the ceramic precursor powder, which was calcined at 900 ºC for 1h, compacted into a pellet form and sintered at 1200 ºC for 2h. The ceramic body was characterized by SEM, XRD and FTIR. In vitro test for bioactivity verification was performed in SBF. A surface deposition of hydroxyapatite on the ceramic body was observed after 3 days. The cytotoxicity test revealed that the material has cell viability above 70%, meaning that it is not toxic for the cells, according to ISO 10993-5 standard.36-45openAccessTexto completo de eventoaguardando