Assertion: fluoride's effect | /r/HasProperty | established
Facets:
value: well
type: DEGREE
Source sentences:
text: The effect of water fluoridation on the natural environment has been investigated, and no adverse effects have been established.
text: The effect of water fluoridation on the natural environment has been investigated, and no adverse effects have been established.
text: The dental effects of fluoride are well established, but evidence for suggested adverse health effects is limited, with a lack of rigorous small area population studies that control for confounding.