Superseded92% confidenceDecision RuleTime unknown
3岁以下儿童用氟含量应≤500ppm且用量仅米粒大小，3-6岁用量豌豆大小，因儿童易吞咽导致氟斑牙
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This knowledge claim has been superseded by newer content
3岁以下幼儿选含氟量500-1000ppm的牙膏，每次用量米粒大小（约0.1g）；3-6岁用量豌豆大小（约0.25g），含氟量可到1000ppm，这是WHO和中华口腔医学会共识Sources
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