Title
Chemical characterization of the resin-dentin interface by micro-raman spectroscopy Chemical characterization of the resin-dentin interface by micro-raman spectroscopy
Author
Faculty/Department
Faculty of Medicine and Health Sciences
Publication type
article
Publication
St. Louis, Mo. ,
Subject
Human medicine
Source (journal)
Journal of dental research. - St. Louis, Mo.
Volume/pages
72(1993) :10 , p. 1423-1428
ISSN
0022-0345
ISI
A1993MA59700012
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The chemical nature of the interface between dentin and adhesive resin materials was characterized by micro-Raman spectroscopy. The resulting chemical profiles were correlated with photomicrographs obtained by SEM after an argon-ion-beam etching treatment of the sample surface. Two commercially available dentin adhesive systems, of which one was also applied with a different conditioning agent, were investigated. Raman spectra, which were recorded along line scans across the interface with a step increment of 1 mum, revealed that resin effectively penetrated 4 to 6 mum deep into the superficially decalcified dentin zone. Across the interface, a gradual transition from resin to dentin over the interdiffusion zone with a mixed contribution of both substances was noticed. Finally, resin appeared to penetrate to the entire decalcification depth of dentin regardless of the aggressiveness of the conditioning procedure.
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