Highest failure risk in endodontic perforation

# Which of the following locations would a
perforation present the HIGHEST failure risk?
A. Furcation
B. Apical 1/3 of the root
C. Crown
D. Middle 1/3 of the root
E. Apex

The correct answer is A. Furcation.

The HIGHEST risk for endodontic failure is
the perforation through the furcation because it is most difficult to seal.
Perforations of the crown may be sealed
with the final restoration.
Perforations near the root apex can be
sealed during obturation.
Teeth with endodontic perforations may still be successful. Perforations are NOT a
guarantee of endodontic failure.

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