The graphs in this pamphlet illustrate the decline of the incidence of tooth decay in the nation's schoolchildren. The report, based on a study of more than 40,000 children, found that students have 36 percent less tooth decay than they did in the beginning of 1980. Appended to the graphs is a National Institutes of Health press release which describes the findings of the nationwide survey and gives some background to the graphs. (JD)