Pediatrics · Growth and Development (Milestones, Developmental Disorders)

At what age should the FIRST tooth normally erupt in an infant?

A 3 to 4 months
B 6 to 7 months ✓
C 9 to 10 months
D 12 months

Correct answer: B. 6 to 7 months

Explanation

The first tooth, typically the lower central incisor, erupts at 6 to 7 months. Delayed dentition is defined as no teeth by 13 months. Eruption at 3 to 4 months is premature and may indicate hormonal disturbance. By 12 months, most infants have at least one tooth.

Reference: Nelson Textbook of Pediatrics, 21st ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

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