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With a view to elucidate the mechanism of the pellicle formation, X-ray photoelectron spectroscopy (ESCA) was used in this paper to investigate the adsorption of the salivary proteins by the enamel. To determine the time-dependent change of the elements adsorbed on to the enamel surface, the photoelectron lines of Ca<SUB>2p</SUB>, P<SUB>2p</SUB>, C<SUB>1s</SUB>, N<SUB>1s</SUB>, and O<SUB>1s</SUB>, were measured by ESCA. <BR>Conclusions obtained were as described below: <BR>1) The peak intensities of the Ca<SUB>2p</SUB>, and P<SUB>2p</SUB>, spectra of the sample surface decreased with time, especially after the exposure to saliva for 30 minutes. Conversely, the N<SUB>1s</SUB> and C<SUB>1s</SUB> intensities increased with time. <BR>2) The C<SUB>1s</SUB> spectrum 2was further separated mainly into 3 peaks, CH, -COO and _??_C=O, by scanning of higher resolusion. The peak intensities of -COO and_??_C=0 considerably increased compared with the CH intensity after the exposure to saliva.
- 口腔病学会の論文
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