Summary

The data regarding the harm fluorine does to teeth and human biology is unequivocal, denied by nobody in the debate. What the proponents argue is that a substance well known to cause adverse health effects at two PPM, is not only safe but good for people at one PPM.

In health science history there may be no instance with such a small window of health promotion/health destruction for a "health" additive. Even one of fluoridation's greatest proponents, Harold Hodge, stated that a margin of 100-fold should be the minimum-sized window for beneficial/toxic food additives when he was not being a fluoridation propagandist.

There is a great deal of suppressed evidence of the harm that 1 PPM fluoridated water causes, and even harm at concentrations of far less than 1 PPM. Scientists and doctors who have either witnessed the adverse health effects of artificial fluoridation or campaigned against it have been silenced.

Often they are simply ignored or denied access to the mainstream media to make their cases, which is common for anybody who challenges mainstream dogma. There is also a clear pattern of active attack, such as what happened to John Yiamouyiannis, Phyllis Mullenix, William Marcus and many others.

Scientific and medical inquisitions are standard behaviour where wealth and power are affected.

Note: Much of this information above came from the blogs made by other people:

Source: http://nucnews.net/nucnews/2001nn/0106nn/010616nn.htm#530
Source: http://users.rcn.com/mgfree/Medical/Fluorine/FluorineApathy.html
Source: http://www.thehealthvine.net/index.php?option=com_content&view=article&id=36&Itemid=58