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儿童多少颗牙齿算正常

更新时间: 2020-11-02 00:00:00     

一般来说正常情况下,儿童乳牙全部萌出有20颗,成年人有28-32颗以人中正中为界,上下各分开,从中间往两边数,儿童的牙齿的名字分别为切牙,侧切牙,尖牙。

牙齿是人体中最坚硬的器官,分为牙冠、牙颈和牙根三部分。又分为牙釉质(珐琅质)、牙本质(象牙质)、牙髓(神经腺)等。

关键词: 儿童 多少 牙齿 正常

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