Influence of ionizing radiation on biogel bone implants observed by luminescence measurements

摘要

The preparation of sol-gel-derived bioactive glass thin films coated on glass is described. Biogel is one of the important modem materials, which are applied in medicine to reduce disability and thus to improve the level of human life. A patient with implanted biogel (i.e. bone, tooth) may be subjected to ionizing radiation during X-ray examination or treatment of cancer. Such an irradiation can generate electron and hole traps in the insulator surface layer. Changes in the microstructure of the biogel surface resulting from irradiation were observed using luminescence methods. Results from luminescence measurements after irradiation of a set of biogel samples are discussed in terms of point defects in the glass structure. (C) 2003 Published by Elsevier Ltd.