About half of 5-year-old children in the US still get cavities. Most are not this bad. It has been known since 1939 that fluoride
early in life will prevent tooth decay. The guy who discovered it was H. Trendly Dean.
The "downside" of fluoride in childhood is that too much can cause too much whiteness. Your doctor will help you
get the correct dose. The experts in this area are Drs. Aasenden and Peebles.