Do you have other citations? How is this different from fluoridated toothpaste or topical application at the dentist?

The fortification properties afforded by fluoride are entirely topical, meaning that fluoride-containing toothpaste can be considered beneficial. You use it and then spit it out. Drinking fluoridated water can hardly be considered helpful. Most of the fluoride content of water goes directly into the stomach where its effects are strictly not studied, and if you know anything about the fluoride ion, the effects are most likely detrimental, and possibly horrendous.

Fun fact: America fluoridates its water supply because notorious propagandist Edward Bernays convinced them to, for money https://en.wikipedia.org/wiki/Public_relations_campaigns_of_... .