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Journal of Nutrition Vol. 42 No. 1 September 1950, pp. 107-115
Copyright © 1950 by American Society for Nutrition
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The Effect of Fluoride and Grapefruit Juice on the Etching of Teeth

Three Figures

Arthur J. Spencer, Jr. and Lillian N. Ellis

Chemistry Department, Adelphi College, Garden City, New York

The lower molars of young male rats were found to be strongly etched after the animals drank commercially canned grapefruit juice as the sole beverage during an 11-week period. The erosion was due to the acidity and not to the sugar content or any other factors, since no erosive action was found when sucrose-water or neutralized grapefruit juice became the fluid intake. There was about 60% protection when 50 p.p.m. of the fluoride, as sodium fluoride, were added to the grapefruit juice.

Manuscript received 24 May 1950.




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