Ran out of characters so I will continue...

Dr. Arvid Carlsson, the 2000 recipient of the Nobel Prize in Medicine/Physiology, upon learning that fluoride works topically (locally): “In pharmacology, if the effect is local (e.g., topical), it’s of course absolutely awkward to use it in any other way than as a local treatment. I mean this is obvious. You have the teeth there, they’re available for you, why drink the stuff?… I see no reason at all for giving it in any other way than locally.”

Dr. James Sumner, a Nobel Laureate biochemist at Cornell University: “We ought to go slowly [with water fluoridation]. Everybody knows fluorine and fluorides are very poisonous substances…We use them in enzyme chemistry to poison enzymes, those vital agents in the body. That is the reason things are poisoned; because the enzymes are poisoned and that is why animals and plants die.”

These are just some of the things I found using a simple Google search. I believe these scientists and doctors.