动物们的牙齿很奇特,人类的牙齿也不简单,你对自己的牙齿知道多少?牙齿是我们的身体器官中唯一一个在出生后才“长出”的器官,这个过程叫作“萌出”。牙齿们早在你出生的时候就埋伏在你的嘴里了。人的牙齿一般是28颗～32颗,只是由于遗传等原因,有人会先天缺少一两颗(多半是左右对称),最容易缺失的是第三磨牙,即智齿。这4颗的活动数,就是为智齿准备的名额。 Animals are very strange teeth, human teeth are not simple, how much do you know about your own teeth? The tooth is the only organ in our body that “grew up” after birth, a process called “ Eruption ”. Teeth are lurking in your mouth long before you are born. People’s teeth are generally 28 to 32, just because of genetic and other reasons, some people will be inherently missing one or two (mostly symmetrical), the most easily missing is the third molars, that is, wisdom teeth. The number of activities of these four, that is prepared for the wisdom of the quota.