Part one of term paper
In 1931 at the University of Arizona Agricultural Experiment Station M. C. Smith, E. M. Lantz, and H. V. Smith discovered that when given drinking water supplied with fluorine, rats would develop tooth defects. Further testing by H. T. Dean and E. Elove of the United States Public Health Service confirmed this report, and stated that what is ...

Part two of term paper
... wanted all fluorine out of their water. But later tests concluded that communities with high levels of fluorine in their drinking water suffered less dental cavities. Further testing concluded that at least 1.0 parts per million of fluorine could help to prevent cavities, but more than 1.5 PPM would cause mottled tooth, so basically a little fluorine would be okay but a lot of fluorine would be bad (Behrman 182). In 1938, with this information, Dr. Gerald Cox of the Mellon Institute began to pro ...