Here is a link to International Society for Fluoride Research There are numerous excellent articles here. Many scientifically define the known problems with fluoride.

Consider printing some of the articles out and mailing/handing them to your dentist or better yet, personnel that work in his/her office. The harmful effects of fluoride are as well documented as the harmful effects of mercury.

Here are just a few fine examples to ponder:

http://www.fluoride-journal.com/02-35-1/351-12.pdf

http://www.fluoride-journal.com/02-35-1/351-38.pdf

http://www.fluoride-journal.com/02-35-1/351-28.pdf

When reading these, remember that when they say "no" bad effects were noticed at low levels, that is usually for very short periods of time as compared to the amount of time children and adults are exposed in the real world.

Also be warned that they often mention animal studies.