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Root Canal Anatomy — NDEB AFK MCQ

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EasyEndodonticsRoot Canal AnatomyNDEB AFK

During root canal treatment of a mandibular first molar, the clinician should expect to find which root canal configuration most commonly?

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Correct answer: E — Two canals in the mesial root and one canal in the distal root

The mandibular first molar typically has two roots (mesial and distal). The mesial root most commonly has two canals (mesiobuccal and mesiolingual, often with a Type II or IV Vertucci configuration). The distal root usually has one wide canal (may be ribbon-shaped or C-shaped). A second distal canal is found in approximately 30% of cases. Identification of all canals is essential for successful endodontic treatment.

Reference: Torabinejad – Endodontics: Principles and Practice, 6th ed., 2021