Adhesion of a two-step etch-and-rinse adhesive on collagen-depleted dentin. (Articolo in rivista)

Type
Label
  • Adhesion of a two-step etch-and-rinse adhesive on collagen-depleted dentin. (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Alternative label
  • Saboia VP, Nato F, Mazzoni A, Orsini G, Putignano A, Giannini M, Breschi L. (2008)
    Adhesion of a two-step etch-and-rinse adhesive on collagen-depleted dentin.
    in Journal of adhesive dentistry
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Saboia VP, Nato F, Mazzoni A, Orsini G, Putignano A, Giannini M, Breschi L. (literal)
Pagina inizio
  • 419 (literal)
Pagina fine
  • 422 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 10 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Department of Restorative Dentistry, Federal University of Ceará, Fortaleza, Brazil; Department of SAU & FAL, University of Bologna, Bologna, Italy; Department of SUNT, University of Urbino, Urbino, Italy; Department of Restorative Dentistry, Institute of Stomatology, Polytechnic, University of Marche, Ancona, Italy; Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Piracicaba, SP, Brazil; Division of Dental Sciences and Biomaterials, Department of Biomedicine, University of Trieste, Trieste Italy; IGM-CNR, Unit of Bologna, c/o IOR, Bologna, Italy. (literal)
Titolo
  • Adhesion of a two-step etch-and-rinse adhesive on collagen-depleted dentin. (literal)
Abstract
  • PURPOSE: To evaluate microtensile bond strength and interfacial nanoleakage expression of adhesive interfaces created by XP-Bond on human deproteinized dentin immediately after bonding and after 6 months of artificial aging. MATERIALS AND METHODS: Noncarious human molars were selected, middle/deep dentin substrates were exposed, and either assigned to group 1 (XP-Bond applied on collagen-depleted dentin) or to group 2 (XP-Bond applied in accordance with manufacturers' instructions). In group 1, the etched dentin surface was treated with 10% NaOCl for 60 s to remove the exposed demineralized organic matrix before XP-Bond application. Composite/dentin beams were obtained in accordance with the microtensile nontrimming technique and either pulled to failure after 24 h or after 6 months' artificial aging. Data were analyzed with two-way ANOVA and Tukey's post-hoc test (p < 0.05). Interfacial nanoleakage evaluation was performed on additional adhesive interfaces to quantify the amount of silver tracer along the interface. RESULTS: The use of NaOCI before XP-Bond application (group 1: 18.9 +/- 5.8 MPa) reduced immediate bond strength by 62% compared to controls (group 2: 49.9 +/- 10.3 MPa; p < 0.5). After 6 months of artificial aging, the bond strength of groups 1 and 2 significantly decreased to 10.1 +/- 2.7 MPa and 35.2 +/- 8.7 MPa, resp (p < 0.05). Interfacial nanoleakage expression along XP-Bond adhesive interfaces was increased either by sodium hypochlorite or by artificial aging. CONCLUSION: The role of collagen fibrils is pivotal for the bonding of XP-Bond to dentin, as decreased immediate bond strength and reduced bond stability over time was found on collagen-depleted dentin. (literal)
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