Permeability of human dentine in vitro interpreted from reflection coefficients

D. H. Pashley, G. M. Whitford

Research output: Contribution to journalArticle

17 Scopus citations

Abstract

A method for measuring the effective osmotic pressures of solutions across dentine is described. The ratio between the effective and theoretical osmotic pressures is termed the reflection coefficient. This value ranges from 0, indicating lack of discrimination between solute and water, to 1.0, indicating complete solute impermeability. In dentine, the reflection coefficients of urea, various salts and sugars were about 0.0001. Thus, the effective osmotic pressures of these solutions are only about 10-4 of their theoretical osmotic pressures. The reflection coefficient formalizes the degree of semipermeability of dentine.

Original languageEnglish (US)
Pages (from-to)141-144
Number of pages4
JournalArchives of Oral Biology
Volume25
Issue number2
DOIs
StatePublished - 1980

ASJC Scopus subject areas

  • Otorhinolaryngology
  • Dentistry(all)
  • Cell Biology

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