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J Dent Res 20(4): 315-322, 1941
© 1941 International and American Associations for Dental Research
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A CONDITION SUGGESTIVE OF THRESHOLD DENTAL FLUOROSIS OBSERVED IN TRISTAN DA CUNHA

II. FLUORINE CONTENT OF THE TEETH

REIDAR F. SOGNNAES 1 and WALLACE D. ARMSTRONG 1

1 The Division of Dental Research, School of Medicine and Dentistry University of Rochester, Rochester, N. Y., and the Laboratories of Dental Research and Physiological Chemistry, University of Minnesota, Minneapolis, Minn.

The average fluorine content of deciduous and permanent teeth from the island of Tristan da Cunha was found to be 0.0140 per cent for the enamel in both dentitions, while the dentin contained 0.0196 and 0.0270 per cent fluorine in the deciduous and permanent teeth, respectively. These values are from 27 to 60 per cent higher than those of non-fluorosed sound teeth (from Minnesota), analyzed by the same method in the same laboratory (1, 2).

Submitted on January 10, 1941






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