不是，人的自然老化，當然有早晚輕重的不同。到了七八十，牙齦會更萎縮，牙根露出，會顯牙大。

來源: newnewid888 於 2016-12-04 09:02:57 [舊帖] [給我悄悄話] 本文已被閱讀：次

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