智齒有什麼用? - 牙齒保健
By Linda
at 2010-11-14T11:54
at 2010-11-14T11:54
Table of Contents
這問題po在這裡不知道適不適合
請問智齒有什麼用?
據說智齒不但對吃東西沒有幫助,還會給很多人造成困擾。
所以智齒算是人類進化演變中的一個錯誤嗎?
(好像跟盲腸有點類似,可是盲腸又不會生長,基本上不會讓人感到不適)
智齒到底有什麼用呢? 不知道其他動物有沒有智齒。
感謝!
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牙齒保健
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at 2010-11-17T00:17
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