X-ray photoelectron spectroscopic study of composite glass fillers

Abstract

Modern dental practice has become very dependent on its materials, such that a great challenge in restorative stomatology is choosing the right combinations of materials. Dental composites consisting of a polymerisable matrix and glass filler particles attracted a large interest. In this study are investigated by X-ray Photoelectron Spectroscopy (XPS) four composite materials obtained from about 1/4 organic phase and 314 inorganic phase in form of oxide glass powder. C 1s core level spectra were analysed in order to get information on functional groups. The 0 1s core level peaks for all samples show that the environments around the oxygen atoms are similar and according to binding energy values they denote non-bridging oxygens in the investigated composites.