HUSBAND, FREDERICK C.: Toronto, Canada (Oct. 14, 1938).

Repeated ingestion of carbohydrates beyond the individual’s needs (i.e., his ability to use them directly, or to store them in the liver and muscles) re­sults in caries. When the supply of carbohydrate does not exceed the need, there is immunity to caries. Degree of caries is the measure of over-ingestion of carbohydrates. The needs of individuals for carbohydrate to supply their heat and energy requirements vary with temperament and environment. The placid, phlegmatic subject requires much less than the active, enthusiastic one. Addition of calcium, cod-liver oil, etc., to the diet of a caries susceptible, does not reduce the disease. A deficient diet, if it does not contain excess of carbohydrates, does not cause caries. Age itself is not a factor. Preg­nancy does not cause caries. In infants artificial feeding does not, per se, develop caries more readily than breast feeding, after teeth erupt. Some breast-fed infants, with prematurely developed incisors, develop caries of these teeth while feeding exclusively on mother’s milk. Caries having begun will not progress, though left uncuretted, when excessive ingestion of carbohydrate is discontinued.

References: Oral Health, 1933; J. Can. Den. Assoc., 1939.

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