If you look at these CDC pages: https://www.cdc.gov/fluoridation/index.html https://www.cdc.gov/fluoridation/index.html https://www.cdc.gov/fluoridation/basic

If you look at these CDC pages: https://www.cdc.gov/fluoridation/index.html https://www.cdc.gov/fluoridation/index.html https://www.cdc.gov/fluoridation/basics/cost.htm https://www.cdc.gov/fluoridation/basics/cost.htm You'll notice one key thing is missing: Side by side comparison with communities that don't have fluoride in their water. That could be other countries. Or better, rural US communities that for the most part use well water. Those controls exist. Note: Better diet also has an impact on oral health, and diet over the last 75 years has also improved. I'm not saying not including that comparison is wrong, but as "the science" goes, it does feel odd that something so obvious is not included.