M. Jokinen et al., INFLUENCE OF SOL AND SURFACE-PROPERTIES ON IN-VITRO BIOACTIVITY OF SOL-GEL-DERIVED TIO2 AND TIO2-SIO2 FILMS DEPOSITED BY DIP-COATING METHOD, Journal of biomedical materials research, 42(2), 1998, pp. 295-302
Different sol-gel-derived titania and titania-silica films were prepar
ed and their properties related to in vitro bioactivity. The films wer
e prepared by depositing the sols on the substrate surface using a dip
-coating method. The sols were monitored carefully as a function of ti
me, using theological techniques and dynamic light scattering. The top
ography of the films was characterized using atomic force microscopy,
and thicknesses and refractive indexes of the films were evaluated by
fitting: transmittance spectra measured in a wave length region of 370
-1100 nm with a spectrophotometer. The in vitro bioactivity tests were
performed in simulated body fluid. Surface topography was found to be
of great importance with respect to the bioactivity of the studied fi
lms. (C) 1998 John Wiley & Sons, Inc.