Iron Containing Glass and Vitreous Ceramic Powders Used for Medical Applications

摘要

Glass sample from xFe2O3(80-x)SiO220Al2O3 systems, where x = 5, 10, 15, 20 mol% were prepared by so-gel method at different pH (1.5 and 8.5) and termally treated of 500?C and 1200?C in order to investigate their interaction with biological tissue and with population of bacteria appering at the implant place.The development of Staphylococcus aureus and Salmonella typhymurium bacterial populations in the presence of these powders has been investigated using a spectrophotometric method. The preparation pH effect is clearly evidencied only for 5?x?15. The vitreous ceramic samples have slight effect upon population increase, more obvious for first tree samples.