[KongchangAI]
Unverified85% confidenceTradeoffTime unknown

美白效果与温和度是核心矛盾:过氧化物美白快但易引起牙敏感和牙龈刺激,物理摩擦型温和但只能维持表面清洁,追求快速见效必然牺牲部分安全性

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85%
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Long-term
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