Some dental ceramics were coated with a bioactive glass and resulted the formation of a stable and well bonded
with the ceramic substrate thin layer. After immersion in a solution with ion concentrations similar to those of
human blood plasma the development of hydroxy carbonate apatite layer on the surface of bioactive glass may be
observed. The objective of this study was to investigate structural surface changes of bioactive glass, after
exposure in a simulated body fluid for a different number of days. The roughness and topography of the
hydroxyapatite surface were investigated by Confocal Scanning Laser Microscopy. The chemical composition
was analyzed by Energy Dispersive Spectroscopy measurements.