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J Dent Res 41(3): 596-602, 1962
© 1962 International and American Associations for Dental Research
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Analysis of Inorganic Constituents in Dental Calculus by Means of Neutron Activation and Gamma-Ray Spectrometry

RUNE SÖREMARK 1 and KNUT SAMSAHL 1

1 Clinical Laboratory and Department of Prosthetics of the Royal School of Dentistry and AB Atomenergi, Stockholm, Sweden

The concentrations of the elements Ca, P, C1, Na, Sr, Zn, Br, Mn, W, Cu, and Au were studied in supragingival dental calculus. The calculus samples were taken from 8 humans, forty-eight to fifty years old. A new rapid analytical method was used. The samples were neutron-irradiated for 20 hours in a flux of 1.7 x 1012 neutrons x cm.–2 x sec.–1. After chemical group separation of activated elements in the calculus samples by means of short ion exchange columns coupled in series, gamma-ray spectrometric analysis was made.

Submitted on July 24, 1961






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