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12岁有多少颗牙正常吗
更新时间: 2020-11-05 00:00:00  

12岁的孩子一般有28颗牙齿,在这个年纪一般换牙已经完成了,第二磨牙(在六龄牙后面的那颗大牙)也已经萌出,这样计算的话应该是28颗。如果第二磨牙没有萌出,那么口腔里应该是24颗。

关键词: 多少 正常

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