Answer: fluorides

AnswerCrossword Clue
fluoridesSodium fluoride or another fluorine-containing salt added to water supplies or toothpaste in order to reduce tooth decay
fluoridesFLUORIDE, a compound of fluorine, also FLUORID
fluoridesA compound of fluorine with another element or group, esp. a salt of the anion F? or an organic compound with fluorine bonded to an alkyl group