INBDE (Integrated National Board Dental Examination) Practice Exam 2025 - Free Practice Questions and Study Guide

Question: 1 / 1180

When do mandibular central incisors begin to calcify?

8-10 months after birth

3-4 months after birth

Mandibular central incisors are the first teeth to erupt in infants, typically around 6-10 months after birth. However, calcification, or the hardening of the tooth structure, begins earlier than the eruption. Mandibular central incisors begin to calcify around 3-4 months after birth. This makes option B the correct answer as it is the earliest time frame mentioned out of the given options. Options A, C, and D are incorrect because they either mention a later or earlier time frame for calcification to begin.

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At birth

6 months after birth

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