title: Chemical characterization of the resin-dentin interface by micro-Raman spectroscopy.
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 micron, revealed that resin effectively penetrated 4 to 6 microns 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.
authors.affiliation: Department of Operative Dentistry and Dental Materials, Katholieke Universiteit te Leuven, Belgium.
authors.forename: B
authors.initials: B
authors.lastname: Van Meerbeek
authors.forename: H
authors.initials: H
authors.lastname: Mohrbacher
authors.forename: J P
authors.initials: JP
authors.lastname: Celis
authors.forename: J R
authors.initials: JR
authors.lastname: Roos
authors.forename: M
authors.initials: M
authors.lastname: Braem
authors.forename: P
authors.initials: P
authors.lastname: Lambrechts
authors.forename: G
authors.initials: G
authors.lastname: Vanherle
mesh_terms: D001896:Boron Compounds; D001840:Dental Bonding; D003804:Dentin / Q000737:chemistry* / Q000648:ultrastructure; D017220:Dentin-Bonding Agents / Q000032:analysis / Q000737:chemistry*; D004058:Diffusion; D006801:Humans; D008689:Methacrylates; D008768:Methylmethacrylates; D008855:Microscopy, Electron, Scanning; D010756:Phosphoric Acids / Q000494:pharmacology; D019279:Resin Cements; D013059:Spectrum Analysis, Raman / Q000379:methods; D013499:Surface Properties
chemical_list: D001896:Boron Compounds; D017220:Dentin-Bonding Agents; D008689:Methacrylates; D008768:Methylmethacrylates; D010756:Phosphoric Acids; D019279:Resin Cements; C041330:Scotchbond; C049495:Super-bond