- • Mix with plaque to prevent its damaging effect to teeth*;
• Help prevent tooth decay*;
• Cause dental fluorosis†;
• Cause bone cancer†;
• Cause osteoporosis†.

*My source: <http://www.fluorideinformation.com/topi ... &sub=201#3>.
†Source is <http://en.wikipedia.org/wiki/Fluoridation#Controversy>.