Pathology · single question
In which developmental anomaly do you count ONE LESS tooth than expected in the arch?
Show answer and explanation
Correct answer: A. Fusion
- A. Correct. Fusion is the union of two tooth germs, so the count is reduced by one (two teeth become one).
- B. Incorrect. Gemination is a single tooth that tries to split into two — the count stays NORMAL.
- C. Incorrect. Concrescence is the union of two formed teeth at the cementum (roots) only; both teeth are still counted.
- D. Incorrect. Dilaceration is a sharp root/crown bend; tooth count is unaffected.