[KongchangAI]
Unverified85% confidenceTradeoffTime unknown

美白牙膏的美白靠摩擦剂(如水合硅石)物理去除表面色渍,RDA摩擦值应控制在70-100之间;RDA过高(>150)长期用会磨损牙釉质,且美白牙膏无法改变牙齿本身内源性颜色

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85%
Confidence
Long-term
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