#MCQ 5 - First Water Fluoridation was done in:

# First Water Fluoridation was done in:

A. Sweden
B. Canada
C. Michigan (USA)
D. California

Answer:
C. Michigan (USA)

To test the hypothesis that adding fluoride would prevent cavities, Dean and his colleagues conducted a controlled experiment by fluoridating the water in Grand Rapids, Michigan, starting 25 January 1945. The results, published in 1950, showed significant reduction of cavities.

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