多刷牙的作用應該是很有限。我隻刷一次，而且連電動牙刷都棄用多年；但是牙齦已經幾年不再出血了，洗牙時都不出

來源: 周老大於 2024-03-02 09:16:04 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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