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Irene Barrios de Arenas,Karem Noris-Suárez,Maritza Vasquez,Yotselys López,Thalia San Antonio 한양대학교 세라믹연구소 2010 Journal of Ceramic Processing Research Vol.11 No.2
A treatment study evaluates glass and glass-ceramics of the Na2O·CaO·K2O·MgO·SiO2·P2O5 system, modified with B2O3, Al2O3or B2O3/Al2O3 up to 0.66. Both, bioactivity using simulated body fluid (SBF) immersion and mineral nodule formation using calvaria derived osteoblasts, were tested. The surface structure changes were examined by SEM-EDX line scan X-ray microanalysis and calcium deposition by the alizarin-red test. It was found that all compositions of glasses as well as glassceramics reacted with the SBF, allowing the development of a SiO2 rich layer. In some cases the presence of a rich calcium and phosphorous layer was observed, that according to other studies, corresponds to the apatite layer identified in previous studies. This result suggests a bioactivity behavior, with the exception of the glass containing B2O3/Al2O3 = 0.66 and the glassceramic of the same composition with a 2nd heat treatment. The composition containing B2O3/Al2O3 = 0.66 showed the best biocompatibility with hydroxyapatite nodule formation on its surface, especially on the glass-ceramics.