Membrane permeability properties of dental adhesive films

Marcela R. Carrilho, Franklin Chi Meng Tay, Adam M. Donnelly, Kelli A. Agee, Ricardo M. Carvalho, Keiichi Hosaka, Alessandra Reis, Alessandro D. Loguercio, David Henry Pashley

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18 Scopus citations

Abstract

This study evaluated the permeability properties of five experimental resin membranes that ranged from relatively hydrophobic to relatively hydrophilic to seal acid-etched dentin saturated with water or ethanol. The experimental resins (R1, R2, R3, R4, and R5) were evaluated as neat bonding agents or as solutions solvated with ethanol (70% resin/ 30% ethanol). The quality of dentin sealing by these experimental resins was expressed in terms of reflection coefficients calculated as the ratio of the effective osmotic pressure to the theoretical osmotic pressure of test solutions. The effective osmotic pressure produced across resin-bonded dentin was induced in hypertonic solutions (CaCl 2 or albumin) at zero hydrostatic pressure. The outward fluid flow induced by these solutions was brought to zero by applying an opposing negative hydrostatic pressure. The least hydrophilic resins blends, R1 and R2, exhibited significantly (p < 0.05) higher reflection coefficients than the most hydrophilic resins (R4 and R5) in both conditions of dentin saturation (water and ethanol). The reflection coefficients of neat resins were, in general, significantly higher when compared with their corresponding solvated versions in both conditions of dentin saturation. In dentin saturated with ethanol, bonding with neat or solvated resins, resulted in reflection coefficients that were significantly higher when compared with the results obtained in dentin saturated with water. Reflection coefficients of CaCl 2 (ca. 1 × 10 -4) were significantly lower (p < 0.05) than for albumin (ca. 3 × 10 -2). Application of hydrophobic resins may provide better sealing of acid-etched dentin if the substrate is saturated with ethanol, instead of water.

Original languageEnglish (US)
Pages (from-to)312-320
Number of pages9
JournalJournal of Biomedical Materials Research - Part B Applied Biomaterials
Volume88
Issue number2
DOIs
Publication statusPublished - Feb 1 2009

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Keywords

  • Collagen
  • Composite/hard tissue
  • Hydrophobic
  • Molecular weight
  • Permeability

ASJC Scopus subject areas

  • Biomaterials
  • Biomedical Engineering

Cite this

Carrilho, M. R., Tay, F. C. M., Donnelly, A. M., Agee, K. A., Carvalho, R. M., Hosaka, K., ... Pashley, D. H. (2009). Membrane permeability properties of dental adhesive films. Journal of Biomedical Materials Research - Part B Applied Biomaterials, 88(2), 312-320. https://doi.org/10.1002/jbm.b.30968