Ptt 大爆卦 | 乳齒恆齒 - 前往 https://www.tagmum.com/article/578/%E4%B9%B3%E9%BD%92%E6%9C%AA%E8%84%AB%E6%81%86%E9%BD%92%E5%B0%B1%E6%90%B6%E8%91%97%E5%87%BA%E9%96%98%E9%9B%99%E6%8E%92%E7%89%99%E6%84%88%E4%BE%86%E6%84%88%E6%99%AE%E9%81%8D%E5%8E%9F%E4%BE%86%E6%98%AF%E9%97%9C%E7%88%B8%E5%AA%BD%E7%9A%84%E5%A3%9E%E7%BF%92%E6%85%A3%E4%BA%8B

你即將離開本站

並前往https://www.tagmum.com/article/578/%E4%B9%B3%E9%BD%92%E6%9C%AA%E8%84%AB%E6%81%86%E9%BD%92%E5%B0%B1%E6%90%B6%E8%91%97%E5%87%BA%E9%96%98%E9%9B%99%E6%8E%92%E7%89%99%E6%84%88%E4%BE%86%E6%84%88%E6%99%AE%E9%81%8D%E5%8E%9F%E4%BE%86%E6%98%AF%E9%97%9C%E7%88%B8%E5%AA%BD%E7%9A%84%E5%A3%9E%E7%BF%92%E6%85%A3%E4%BA%8B

乳齒未脫恆齒就搶著出閘！雙排牙愈來愈普遍

人一生有兩套牙齒，一套叫乳齒，而另一套叫恆齒，在小朋友5-6歲開始，乳齒就會慢慢脫落，恆齒交接換成堅韌的牙齒。正常的步驟應該是乳齒脫落，恆齒才 ...

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