Children have 20 milk teeth, 10 in each jaw. This set of teeth is important for chewing and speaking, and helps to keep space open for the subsequent set of 32 permanent teeth. Milk teeth begin to develop in the womb around the sixth week of gestation, and gradually come out (“erupt”) between six months and three years after birth. However, there is considerable variation in this timing, due to genetics, geography, and an infant’s overall health and nutritional status.
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