By what maximum age should the first teeth erupt?

 # Normally, by what maximum age should the first teeth erupt?

A. 10 to 11 months

B. 6 to 8 months

C. 14 to 16 months

D. None of the above

The correct answer is A. 10 to 11 months.

In primary dentition, the variation of eruption has a range of 4-5 months. Since the first tooth erupts at an age of six months, a variation of 4-5 months can be considered normal. 

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