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In all, children have 20 baby teeth - 10 on the top and 10 on the bottom. These teeth act as placeholders for the adult teeth that grow in after the baby teeth fall out.
Making their Arrival. The first baby teeth appear between the ages of 6 months and 1 year. The full set of 20 teeth is typically present by 2 1/2 to 3 years of age. Your child will have 10 teeth on both the upper and lower jaw.