Why Is Fluoride Good for Teeth?

If our teeth are made mostly of calcium, why do we use fluoride to keep them healthy? Quick Questions explains why, and how we finally figured it out.

Hosted by: Michael Aranda
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Sources:
http://www.nidcr.nih.gov/oralhealth/T...
http://deepblue.lib.umich.edu/bitstre...
http://www.smithsonianmag.com/smart-n...
http://www.dentalcare.com/en-US/denta...