Green–Vermillion

Green–Vermillion OHI-S: debris, calculus, and hygiene level

The Simplified Oral Hygiene Index combines a debris component (DI-S) and a calculus component (CI-S), producing a total score from 0 to 6.

Classical method

Six specified index-tooth surfaces are examined. DI-S and CI-S are each scored from 0 to 3 per surface, averaged separately, and then added.

Interpretation

0–1.2: good
1.3–3.0: satisfactory
3.1–6.0: unsatisfactory

Green–Vermillion OHI-S calculator

Enter the examined surfaces, the total DI-S score, and the total CI-S score.

OHI-S = (DI-S total ÷ surfaces) + (CI-S total ÷ surfaces)

Educational calculator. The result is not a diagnosis and must be interpreted with the clinical examination.

How Odonta Index AI uses it

A photo can provide a preliminary debris estimate. Calculus cannot be reliably inferred from a disclosed-plaque mask, so the clinician enters CI-S separately. Without clinical CI-S, the result remains preliminary.

Original publication

Greene & Vermillion, 1964 — The Simplified Oral Hygiene Index

Try a preliminary analysis

Create an account and review the result before sharing it with a patient.

Try it free