Anatomy & Histology · single question
What is the size of the maxillary central incisor relative to the maxillary LATERAL incisor (in terms of mesiodistal width)?
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Correct answer: B. 70%
The maxillary lateral incisor is approximately 70% the mesiodistal width of the maxillary central incisor (or equivalently, the central is ~143% the width of the lateral). Average widths: Central incisor ~8.5 mm, Lateral incisor ~6.5 mm. The lateral is approximately 6.5/8.5 ≈ 76% of the central — closest to 70% among the options. This is relevant for esthetic dentistry and dental anatomy knowledge.
- A. Incorrect. 40% would make the lateral only 3.4mm wide — far too narrow. The lateral incisor is not that much smaller.
- B. Incorrect. 50% would make the lateral about half the central's width — not accurate; the lateral is closer to 65-75% of the central.
- C. Incorrect. 60% is closer but still underestimates the lateral incisor's width relative to the central.
- D. CORRECT. The lateral incisor is approximately 70% the width of the central incisor — this is the most accurate answer among the options given.
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