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从胎儿6周到7岁,为小儿牙齿生长发育的营养期。一般来说,胎儿6周乳牙胚已开始形成,牙釉质钙化完成是在生后一年内,恒牙胚开始形成亦是在胎儿时期.牙釉质的钙化完成是在7岁左右。如果营养缺乏,孩子就会发育不良,牙齿的发育同样如此。胎儿时期的营养主要来源于母体,此时母亲要注意摄取富有营养
6 weeks from the fetus to 7 years old, the development of children's teeth nutrition period. In general, 6-week-old fetal tooth germ has begun to form, enamel calcification is completed within a year after birth, permanent tooth germ formation is also in the fetal period .Enamel calcification completed at about 7 years old. If nutrition is poor, the child will develop dysplasia, the same development of teeth. Fetal nutrition mainly comes from the mother, this time the mother should pay attention to the intake of nutritious