Several different liquid diets have been proposed to use in tests to determine the cariogenic potential of foods fed to rats. A rat model has been developed to determine the cariogenic potential of foods. This entails feeding animals their essential nutrition in liquid form by means of gastric intubation and the test food on a programmed feeder. Several liquid diets of different nutritional density have been proposed for use in this test. Animals fed either of two of the four diets alone failed to survive the experimental period. It was further observed that the cariogenicity of a cookie fed through a programmed feeder was not affected by the liquid diets administered to the animals. The liquid diets were also without affect on the cariogenicity of diet 2000 fed ad libitum.
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