Permeability of human dentine in vitro interpreted from reflection coefficients

D. H. Pashley, G. M. Whitford

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


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
Issue number2
StatePublished - 1980

ASJC Scopus subject areas

  • Otorhinolaryngology
  • Dentistry(all)
  • Cell Biology


Dive into the research topics of 'Permeability of human dentine in vitro interpreted from reflection coefficients'. Together they form a unique fingerprint.

Cite this