Dental Indices (DMFT, OHI-S, CPI) — NEET MDS | CrackMDS

Permanent teeth. DMFT is for permanent teeth; deft/dmft for primary.

Greene & Vermillion. Greene & Vermillion developed the Simplified OHI.

WHO probe. The Community Periodontal Index uses the WHO probe.

⭐ High-Yield Facts for Exam

DMFT/DMFS — caries experience in permanent teeth (Decayed, Missing, Filled); deft/dmft for primary teeth.
OHI-S (Greene & Vermillion) — Simplified Oral Hygiene Index = Debris Index-S + Calculus Index-S (6 surfaces).
CPI (Community Periodontal Index) — periodontal status using the WHO probe (bleeding, calculus, pockets).
Gingival Index (Löe & Silness) and Plaque Index (Silness & Löe).

Indices standardise measurement for surveys, individual monitoring and program evaluation.

DMFT = permanent caries; deft = primary; OHI-S = Greene & Vermillion; CPI uses WHO probe.

Q1. DMFT index measures caries experience in:

A. Primary teeth

B. Permanent teeth

C. Both equally

D. Gingiva

Show Answer

✅ Answer: B

DMFT is for permanent teeth; deft/dmft for primary.

Q2. OHI-S was developed by:

A. Löe & Silness

B. Greene & Vermillion

C. Russell

D. Dean

Show Answer

✅ Answer: B

Greene & Vermillion developed the Simplified OHI.

Q3. The CPI uses which instrument?

A. Nabers probe

B. WHO probe

C. UNC-15

D. Explorer

Show Answer

✅ Answer: B

The Community Periodontal Index uses the WHO probe.

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