Prognosis of a tooth

# Which of the following is the MOST critical factor determining the prognosis of a periodontally involved tooth?
A. Mobility of the tooth
B. Probing depth
C. Amount of attachment loss
D. Presence of furcation involvement

The correct answer is C. Amount of attachment loss.

The amount attachment loss determines
the prognosis of periodontally
Compromised teeth.

Teeth with severe attachment loss and
vertical mobility present a hopeless
prognosis and must be extracted to avoid
infection that may compromise other teeth.
The higher the quantity of attachment, the
better the prognosis.

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