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This book is constructed on the basis of a series of lectures delivered to American audiences in 1926 and 1927, including the material found in the seventy-six page first edition. The opinions may be summed up in one quotation: "It is evident, therefore, that mastication of fibrous food is conducive to dental hygiene." This may be elaborated by a second quotation: "As regards the prevention of tartar, pyorrhea and the irregularities of the teeth which predispose to oral sepsis, the main point to be attended to is the providing of food which will stimulate the self-cleansing processes, rub or scour the teeth and ensure the normal pressure strains during mastication." In Wallace's opinion, the effect of vitamins has been greatly overestimated, the use of milk after the second year is unwise, the overuse of cane sugar predisposes to dental disease, and enamel once fully formed remains constant in composition. These
The Physiology of Oral Hygiene and Recent Research with Special Reference to Accessory Food Factors and the Incidence of Dental Caries.. JAMA. 1930;95(11):819. doi:10.1001/jama.1930.02720110055033