Calcified Tissue Research

, Volume 18, Issue 1, pp 65–79 | Cite as

HPO42− Content in enamel and artificial carious lesions

  • J. Arends
  • C. L. Davidson
Original Papers


The HPO42− and CO32− content was determined in sound enamel and in material collected from artificially produced carious lesions. The method described shows that the HPO42− content can be determined from the 875 cm−1 infrared absorption band if correction for the CO32− contribution are made. The I. R. spectra show that the HPO42− content in sound human or bovine enamel is about 5% by weight. In artificially produced carious lesions (pH=4.0), the HPO42− content is in the order of 15 wt%. Most likely, the HPO42− ions in sound and carious enamel have a different environment.

Key words

Enamel HPO4 CO3 Caries 


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Copyright information

© Springer-Verlag 1975

Authors and Affiliations

  • J. Arends
    • 1
    • 2
  • C. L. Davidson
    • 1
    • 2
  1. 1.Laboratory for Materia TechnicaUniversity of GroningenGroningenThe Netherlands
  2. 2.Department of Dental MaterialsUniversity of AmsterdamAmsterdamHolland

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