[KongchangAI]
Unverified78% confidenceTradeoffTime unknown

振动频率越高清洁力越强但对牙龈刺激也越大且噪音更明显,初次使用电动牙刷者建议从每分钟3万次左右起步并使用低档,而非直接追求4万+高频

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78%
Confidence
Long-term
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