Unverified82% confidenceDecision RuleTime unknown
刷毛软硬度选软毛(soft)，磨圆率(end-rounding)应≥60%，磨圆率低的刷毛在放大镜下毛尖呈锯齿状会磨损牙釉质和牙龈；可降解牙刷因工艺限制磨圆率普遍偏低，需重点确认
1
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82%
Confidence
Long-term
Relevance
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Unverified刷毛磨圆率是关键指标，国标要求磨圆率≥60%，优质刷头达70-80%，磨圆率低的刷毛末端锋利会划伤牙龈搪瓷层88% similarUnverified牙刷刷毛硬度选软毛（soft，直径≤0.18mm）适合90%人群，中毛以上仅适合刷毛习惯极轻且牙菌斑重者，硬毛会加速牙龈退缩87% similarUnverified0-3岁应选刷头长度≤1.5cm、刷毛数量少于20束的超细软毛牙刷（刷毛硬度对应Soft/Extra Soft），刷毛磨圆率应达到70%以上以避免损伤稚嫩牙龈87% similarUnverified刷毛磨圆率≥60%才能有效避免刷毛尖端划伤牙龈和牙釉质，优质牙刷磨圆率可达80%以上，购买时可看包装是否标注'磨圆处理'或'end-rounded'85% similarUnverified0-3岁选刷毛0.01mm软硬度极软款且刷头长度≤1.5cm（覆盖不超过2颗牙宽度），杜邦软毛磨圆率≥80%避免划伤娇嫩牙龈84% similar
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