Unverified80% confidenceDecision RuleTime unknown
认准刷毛端部磨圆处理（Rounded/End-rounded标注）比认准品牌更重要——未磨圆的刷毛切口锋利会划伤牙龈，正规品牌磨圆率普遍达标，杂牌常忽略此工艺
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80%
Confidence
Long-term
Relevance
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