[KongchangAI]
Unverified90% confidenceFactTime unknown

活性炭/竹炭类洁牙粉的美白原理是物理吸附和摩擦去除表面色素,只能去除外源性着色(茶渍、烟渍、咖啡渍),对四环素牙、氟斑牙等内源性变色无效

1
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90%
Confidence
Long-term
Relevance
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