From a basic web search on other uses for Fluoride...
"Beyond dental health, fluoride is utilized in industrial and chemical processes, including the production of aluminum (via cryolite), steel-making (using fluorite), and the manufacturing of fluorocarbons for refrigerants and aerosols. It is also employed as a phosphatase inhibitor in biological assays and in the purification of uranium isotopes (via uranium hexafluoride) for nuclear fuel."
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