Which dental index is NOT reversible?

Periodontal score (CPITN)
Gingival score (GI)
DMFT
OHI-S

Show answer and explanation

Correct answer: C. DMFT

DMFT (Decayed, Missing, Filled Teeth) is irreversible u2014 once a tooth is decayed, extracted, or restored, that status cannot change. OHI-S measures removable debris; gingival index measures reversible inflammation; CPITN scores can improve with treatment.

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