Concentration of rare earths in dentine and enamel: A pilot study

E. Steinnes Institute for Atomic Energy, Isotope Laboratories, Kjeller, Department of Physiology and Biochemistry, and Department of Anatomy, Dental Faculty, University of Oslo, Norway

S. Dahm Institute for Atomic Energy, Isotope Laboratories, Kjeller, Department of Physiology and Biochemistry, and Department of Anatomy, Dental Faculty, University of Oslo, Norway

R. Furseth Institute for Atomic Energy, Isotope Laboratories, Kjeller, Department of Physiology and Biochemistry, and Department of Anatomy, Dental Faculty, University of Oslo, Norway

Abstract

A neutron activation method for the determination of rare earths in hard tissues was developed and the concentrations of some of these elements in human dentine and enamel were determined. The results obtained for La, Sm, Tb and Yb are very low, indicating a total rare-earth content of the order of 0.1 ppm or less in the samples investigated. The observed La/Sm ratios seem to indicate a slight enrichment of the lighter rare earths relative to the heavier, as compared to average geological abundances.

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Concentration of rare earths in dentine and enamel: A pilot study

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Concentration of rare earths in dentine and enamel: A pilot study

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