Abstract
The incorporation of a bioactive glass in the structure of hybrid polymers used in dentistry for the construction of fixed prosthetic restorations could induce the expression of bioactivity, leading to the possibility of periodontal tissues reattachment. Hybrid polymer specimens and polymer specimens modified by bioactive glass were prepared and used as control for the surface morphology examination by Scanning Electron Microscopy with associated Dispersive Spectroscopy Analysis (SEM-EDS) and for surface characterization with Fourier Transform Infrared Spectroscopy (FTIR). Furthermore, hybrid polymer specimens modified by bioactive glass were immersed in simulated body fluid (SBF) at 37 °C for different time intervals and were examined by SEM-EDS and FTIR. After 4 days immersion time a dense and continuous apatite layer covered almost the entire modified surface of the specimens. The molar Ca/P ratio reached the value of 1.79. The apatite layer showed a thickness of 1?m and was attached to the substrate, while bioactive glass particles were still present in polymer mass. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
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