[KongchangAI]
Unverified83% confidenceFactTime unknown

刷毛磨圆率是关键安全指标:合格儿童牙刷刷毛端部应经磨圆处理,磨圆率应≥60%(优质品牌达80%以上),未磨圆的尖锐毛端会划伤牙龈,可用手指轻触刷毛判断是否扎手

1
Sources
83%
Confidence
Long-term
Relevance
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