Degeneration of the optic nerve and papillomacular bundle with resulting loss of central vision and blindness, which is progressive for several weeks, then usually becomes stationary with permanent central scotoma; the age of onset is variable, most often in the third decade; more males than females are affected.
Fluoridation Chemicals. The fluoride chemicals used to fluoridate drinking water are: hydrofluorosilicic acid, sodium fluorosilicate, and sodium fluoride. Unlike the fluoride compounds found in toothpaste or supplements, fluoridation chemicals are not pharmaceutical grade quality.They are, instead, unpurified industrial by-products that are collected in the air pollution control systems of certain industries.he fluoride chemicals used to fluoridate drinking water are: hydrofluorosilicic acid, sodium fluorosilicate, and sodium fluoride.
Knowledge center. Fluoride, the 13th most abundant element on the earth's crust, is a chemical ion of the element fluorine-fluoride has one extra electron that gives it a negative charge. Fluoride is found naturally in soil, water, foods, and several minerals, such as fluorapatite and fluorite.ynthesized fluoride is commonly added to drinking water, toothpaste, mouthwashes and various chemical products. Water authorities add fluoride to tap-water because they say it reduces the prevalence of tooth decay in the local population.