When do the lower central incisors usually erupt?
  1. Around 6 ½ months
  2. Around 7 ½ months
  3. Around 1 year
  4. Around 12 months
Explanation
Answer: A - The lower central incisors usually erupt around 6 ½ months. The upper central incisors erupt around 7 ½ months.
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