牙根個數 - 口腔醫學資訊,議題討論
By Cara
at 2009-11-05T12:06
at 2009-11-05T12:06
Table of Contents
上顎:
123(前牙): 1牙根
4(第一小臼齒): 1牙根或 2牙根(57%)
5( 二 ): 1牙根或 2牙根(11%)
6(第一大臼齒): 3牙根
7( 二 ): 2牙根(25%)或 3牙根
8( 三 ): 變異很大
下顎:
123(前牙): 1牙根
4(第一小臼齒): 1牙根
5( 二 ): 1牙根
6(第一大臼齒): 2牙根,3牙根(黃種人15%)
7( 二 ): 2牙根,C型牙根(32%)
8( 三 ): 變異很大
請參考,基本上牙根變異很大,什麼情況都有機會發生
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Tags:
口腔醫學
All Comments
By Edwina
at 2009-11-08T22:47
at 2009-11-08T22:47
By Jake
at 2009-11-12T09:27
at 2009-11-12T09:27
By Daniel
at 2009-11-15T20:08
at 2009-11-15T20:08
By Irma
at 2009-11-19T06:49
at 2009-11-19T06:49
By Linda
at 2009-11-22T17:29
at 2009-11-22T17:29
By Ivy
at 2009-11-26T04:10
at 2009-11-26T04:10
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