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1 Department of Chemical Hygiene, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, Md.
1. A quantitative method to express permeability differences in teeth is presented.
2. With this method central incisor crowns from pigs on deficient diets gave smaller Co.P values than those from control animals.
3. Comparison of the Co.P values indicates that the crowns from animals on deficient diets were more permeable than those from control pigs.
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