DURING the first 2 treatment series of the Richmond (Ind.)dental care study proj- ect, an average of 4,600 school children, 5 through 16 years of age, received complete den- tal care (1).The study was designed to give dental care services to all school children en- rolled in kindergarten through the 9th grade.The project was started in December 1946, and 4 consecutive treatment series were completed 5 years later.A treatment series consisted of examination and treatment of dental defects of all eligible children whose parents requested treatment.Prophylaxis and topical fluoride treatments were included in each series.
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Waterman et al. (1954) studied this question.