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婴儿一岁长多少牙齿
更新时间: 2020-11-04 00:00:00  

婴儿一岁长2~5颗牙齿,大多数情况下,宝宝的第一颗牙齿出现在6个月左右。

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: 婴儿 多少 牙齿

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