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Endodontics · single question

In a maxillary first molar (#14), which root most often contains two canals (the second canal frequently being missed)?

  1. Mesiobuccal root
  2. Distobuccal root
  3. Palatal root
  4. Distolingual root
Show answer and explanation

Correct answer: A. Mesiobuccal root

  • A. Correct. The mesiobuccal root of maxillary first molars frequently has a second canal (MB2), the most commonly missed canal in endodontics.
  • B. The distobuccal root usually has a single canal.
  • C. The palatal root is typically a single, large canal.
  • D. A distolingual root is not a standard root of the maxillary first molar.

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