Assertion: fluoride's amount | /r/ObjectUse | used by young children
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Source sentences:
text: In fact, since the anticaries effect of fluoride is concentration-dependent (the concentration of free fluoride in the mouth), and the fluorosis risk is dose-dependent (the dose of fluoride circulating in the blood according to the child's weight), a reduction in the amount of toothpaste used by young children would reduce the risk of dental fluorosis without significantly affecting its anticaries