Nah, the wealthy will be able to pay dentists to provide regular flouride treatments, especially to their children's teeth. (google Flouride dental treatment). And someone will make a mint selling bottled "flouridated water." Only the children of the poor will suffer more cavities.
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https://www.dentistryiq.com/dentistry/research-and-news/article/55248093/why-calgary-reversed-its-decision-on-fluoride-after-10-years