Most proponents also say that fluorine makes the tooth harder. Any dentist who has taken care of cavities in people from high fluorine areas, as I did in Texas during the war, know that they are much easier to cut with the dental drill. The mottling disfigurement of the teeth that occurs in one out of ten is something the victims abhor and would give anything to correct. When the teeth of fluorine-treated individuals are examined chemically, they are found to be composed of calcium fluoride instead of their usual calcium carbonate composition. A tooth composed of calcium fluoride, even though softer, doesn't decay us readily because calcium fluoride is less soluble to acids than is calcium carbonate.
Decay takes place in an acid environment created by sweets and refined carbohydrates.
The investigators who first reported lesser decay rates in towns having naturally higher fluorine content in their waters were short-sighted in their research, as they failed to check the water and soil for other mineral values. Lo and behold, when this was done they found calcium, magnesium and a host of other elements were also present in greater amounts. On top of that, they also discovered foods and animals grown in these areas had higher mineral values and were more nutritious and healthier than those growing in other communities. Somehow, the fluorine lovers could not see that these higher mineral food values were dual reasons for immunity to tooth decay. Fluorine is an enzyme poison.