[KongchangAI]
Unverified78% confidenceFactTime unknown

洁牙玩具表面的凸起颗粒或沟槽深度需≥2mm才能有效嵌入牙缝清除牙菌斑,纯光滑表面的球状玩具几乎无洁牙功能,只能算普通逗玩玩具

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