Superseded95% confidenceDecision RuleTime unknown
成人防蛀牙膏含氟量应在1000-1500ppm之间，低于1000ppm防龋效果不足，成人日常首选1450ppm含氟牙膏
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This knowledge claim has been superseded by newer content
成人防蛀首选含氟牙膏，氟含量应在1000-1500ppm（0.10%-0.15%），低于1000ppm防蛀效果显著减弱，超过1500ppm对成人无额外收益反增氟斑牙风险Sources
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