Anatomy & Histology · single question
How long after eruption does a PERMANENT tooth's root finish forming?
Show answer and explanation
Correct answer: A. 2–3 years
Permanent root formation completes ~2–3 years after eruption (primary teeth ~1–1.5 years).
- A. Correct (verified). Permanent root formation completes about 24–36 months (2–3 years) after eruption.
- B. Incorrect — note: the recall sheet highlighted this, but references confirm 2–3 years.
- C. Too long; root completion is ~2–3 years post-eruption.
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