Smallest Permanent Tooth — NDEB AFK MCQ
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Correct answer: A — Mandibular central incisor
The mandibular central incisor has the smallest mesiodistal crown width of any permanent tooth (approximately 5.3 mm) and the smallest overall crown dimensions. It is also the most symmetrical tooth in the dentition. The mandibular lateral incisor is slightly larger (approximately 5.7 mm). This small size makes the mandibular incisors susceptible to crowding when arch length is deficient.
Reference: Ash – Wheeler's Dental Anatomy, Physiology, and Occlusion, 11th ed., 2020