Longest Root — NDEB AFK MCQ
Instant feedback + full explanation. One question, done properly.
Educational content. Not a substitute for clinical judgement or local policy.
Reveal the answer and explanation
Correct answer: E — Maxillary canine
The maxillary canine has the longest root of any tooth in the human dentition, averaging approximately 26.5 mm in total tooth length. Its long root provides excellent anchorage and makes it resistant to periodontal disease and tooth loss. The mandibular canine has the second longest root. This robust root anatomy also makes the maxillary canine the last tooth typically lost in the ageing dentition.
Reference: Ash – Wheeler's Dental Anatomy, Physiology, and Occlusion, 11th ed., 2020