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Root canal of maxillary first molar difficult for instrumentation

# Root canal of maxillary first molar difficult for instrumentation is:
A. Mesiobuccal
B. Distobuccal
C. Distolingual
D. Mesiolingual


The correct answer is A. Mesiobuccal.

Mesiobuccal root has greatest distal curvature and is narrowest of all the three roots. It is flattened in mesiodistal direction. Sometimes, it contains a fourth canal. 


1 comment:

  1. I regularly hear patients state, "My neighbor says to not get a root trench, since he's had three of them and every one of those teeth have been pulled. root canal instrument

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