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J Dent Res 29(4): 498-505, 1950
© 1950 International and American Associations for Dental Research
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THE CITRIC ACID CONTENT OF HUMAN TEETH

I. ZIPKIN 1 and K. A. PIEZ 1

1 National Institutes of Health, National Institute of Dental Research, Bethesda, Md.

1. Sixty-five samples of sound dentin had an average citric acid content of 888 ± 103 mg. per cent, 129 samples of carious dentin had 872 ± 105 mg. per cent, 39 samples of sound enamel had an average citric acid content of 100.5 ± 22.9 mg. per cent, and 83 samples of carious enamel had 98.7 ± 26.3 mg. per cent.

2. The citric acid content of dentin and enamel of human teeth does not appear to be related to either caries or to tooth type.

Submitted on October 13, 1949






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