[KongchangAI]
Unverified80% confidenceCautionTime unknown

6岁以下不建议使用普通旋转式电动牙刷(转速通常>7000rpm),应选振幅小、转速≤2000rpm的儿童专用声波款或坚持手动,高频振动对乳牙及未发育完全的牙龈刺激过大

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80%
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Long-term
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