Assertion: fluoride | /r/AtLocation | dental products
Facets:
value: commonly
type: TEMPORAL
value: by the late 20th century
type: TEMPORAL
value: for healthy teeth
type: PURPOSE
Source sentences:
text: For healthy teeth, fluoride is added to some dental products and drinking water.
text: By the late 20th century, fluoride was commonly added to most toothpaste and various other dental products, while numerous foods were fumigated with fluoride chemicals.