title: In vivo adhesive interface between resin and dentin.
abstract: V-shaped cervical cavities prepared in monkey teeth were restored with several dentin bonding systems, and the in vivo resin-dentin interfacial structures were observed under the scanning electron microscope using an argon-ion etching technique. The hybrid layer could be clearly observed; its depth was dependent on the conditioner/primer used and tended to be thinner at the deep part of the cavity. Resin tags were also clearly observed, and their structure at the inner part was noted to be rougher than that closer to the tubule orifices. When 37% phosphoric acid gel was used, the tags in the deeper parts of the cavity were much rougher. Hemispherical and spherical roughened structures were observed directly above the tubule orifices, which were thought to be a mixture of dentinal fluid and bonding resin that had flowed out from the tubules. The acidic primer containing maleic acid and HEMA could not remove the smear plugs, and undissolved smear particles were observed in the tubules.
authors.affiliation: Faculty of Dentistry, Department of Operative Dentistry, Tokyo Medical and Dental University, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Shimada
authors.forename: C
authors.initials: C
authors.lastname: Harnirattisai
authors.forename: S
authors.initials: S
authors.lastname: Inokoshi
authors.forename: M F
authors.initials: MF
authors.lastname: Burrow
authors.forename: T
authors.initials: T
authors.lastname: Takatsu
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods*; D000704:Analysis of Variance; D000818:Animals; D001128:Argon; D002951:Citrates; D019343:Citric Acid; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding; D003804:Dentin / Q000648:ultrastructure*; D003806:Dentin Permeability; D004492:Edetic Acid; D005782:Gels; D000882:Haplorhini; D007477:Ions; D008298:Maleates; D008689:Methacrylates; D008855:Microscopy, Electron, Scanning; D010756:Phosphoric Acids; D019279:Resin Cements; D016369:Smear Layer; D018709:Statistics, Nonparametric; D013499:Surface Properties
chemical_list: D002951:Citrates; D003188:Composite Resins; D005782:Gels; D007477:Ions; D008298:Maleates; D008689:Methacrylates; D010756:Phosphoric Acids; D019279:Resin Cements; C074669:Clearfil Photo Bond; C072569:Scotchprep; D019343:Citric Acid; D001128:Argon; D004492:Edetic Acid; C030242:phosphoric acid