[KongchangAI]
Unverified90% confidenceDecision RuleTime unknown

声波式(磁悬浮马达)振动频率31000-42000次/分钟,清洁靠高频摆动带动液体流动,对牙龈刺激小;旋转式(机械马达)清除牙菌斑效率高但对牙龈磨损大,牙龈萎缩或敏感人群优先选声波式

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90%
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Long-term
Relevance
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