Danger zone is defined by Abou-Rass, Frank and Glick as the thin area in the root canal wall that is vulnerable to stripping by injudicious filling.
Danger zone is located at mandibular first molar mesial root, 1.5mm below the furcation about 1.3mm thick on the distal surface.
Both statements are true.
Both statements are false.
The first statement is true, second statement is false.
The first statement is false, second statement is true.

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