The Effect of Fluoride and Grapefruit Juice on the Etching of Teeth Three Figures

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Abstract
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.