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Should a 3-year-old have more than six teeth?
Q: My son is almost 3 and only has about six teeth. I read somewhere that by age 2½ a child should have 20 primary teeth—10 on top and 10 on the bottom. Is this true?
A: You're correct—the average child has 20 teeth by the time he's 3. But remember, this is an average. There are big variances among children. Still, I would recommend you bring your son to a dentist for an evaluation. He may have a congenital absence of teeth or there may be something preventing his teeth from erupting.