There is a very high frequency of MB2 canals, but a frequent question is how aggressively do you chase out a mesiolingual groove with a bur or ultrasonic instrument looking for them?
Terry Pannkuk, DDS, MScD – Clinical Endodontic Technique Instruction, Cleaning and Shaping
There is a very high frequency of MB2 canals, but a frequent question is how aggressively do you chase out a mesiolingual groove with a bur or ultrasonic instrument looking for them?
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