How Did Scientists Discover That Fluoride Prevents Tooth Decay and When Was Fluoride Added To Water?
Although adding fluoride to toothpaste and drinking water is a relatively new thing, scientists have noticed fluoride’s effects since the early 1800s. The soil and water around Naples, Italy, is very high in fluoride, and as a result its residents historically have had little or no tooth decay. This was noted in 1802, and by the
