fluoridate.
In wider use: to treat or combine with fluorine or fluoride; to convert into a fluoride.
Today’s NYT Connections Answers Apr 25, #319 - Daily Updates & Hints
Today’s Wordle Answer Apr 25 #1041- NYT Wordle Hints & Updates
NYT Mini Crossword Answers Today - The Mini for Apr 25 Solved
NYT Strands Today - Hints, Spangram & Answers for April 25