Abstract
Salivary amylase activity can be measured in serially diluted saliva by the quantitative estimation of total reducing sugar by the Folin-Wu method. Amylase activity is directly proportional to concn. when pH, temp., and time are kept constant. Salivary amylase activity in the same individual does not vary significantly from day to day. There was no significant difference between the salivary amylase activity of a series of 20 noncarious individuals and a series of 36 individuals with caries of varying degrees.

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