Question 532 · LDEK · Pulp chamber and root canal anatomy

In the first upper molar, the orifice of MB2 canal is usually located:

  1. A. in central point of the crown.
  2. B. near the line linking buccal canals.
  3. C. near the line linking the mesiobuccal and palatal canal.
  4. D. near the line linking distobuccal and palatal canal.
  5. E. location of MB2 canal is irregular.
Hint

Picture the rhomboidal access outline of an upper first molar and where the extra canal hides under the mesial dentin shelf.

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