天气预报 > 其他 > 人牙齿有多少颗
人牙齿有多少颗
更新时间: 2020-11-05 00:00:00  

一般情况下,人类的牙齿颗数在28-32之间,28颗牙齿是成年人最基本的配备,另外四颗则是偶有萌出的智齿。28颗牙齿是上下对称的,每半边上下两排各有2个切牙、1个尖牙、2个双尖牙和3个磨牙,排在最后面的四颗磨牙又叫智齿,每个人长出智齿的数量不同。

关键词: 牙齿 多少

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