Subsurface demineralization in porous apatite-gel suspensions

J. D.B. Featherstone, E. L. Cusslerh

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Suspensions of hydroxyapatite or carbonated apatite stabilized in gelatin gels were exposed to hydrochloric acid solutions containing calcium and/or phosphate and/or fluoride. Initial apatite dissolution occurred at and near the surface of the gel and partial dissolution took place below the surface. A remineralization band subsequently appeared just below the surface when either Ca or PO4 was present in excess. A mathematical theory of demineralization of porous solids predicts this behavior for the apatite case.

Original languageEnglish (US)
Pages (from-to)494-501
Number of pages8
JournalCaries research
Issue number6
StatePublished - 1987


  • Apatite
  • Caries
  • Subsurface demineralization

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