Simplified Oral Hygiene Index (OHI-S)
Simplified Oral Hygiene Index (Greene and Vermillion): debris plus calculus scores over six index teeth, read as good, fair or poor oral hygiene.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Debris score, tooth 16
- 1
- Debris score, tooth 11
- 0
- Debris score, tooth 26
- 2
- Debris score, tooth 36
- 1
- Debris score, tooth 31
- 0
- Debris score, tooth 46
- 2
- Calculus score, tooth 16
- 1
- Calculus score, tooth 11
- 0
- Calculus score, tooth 26
- 1
- Calculus score, tooth 36
- 2
The other 2 values
- Calculus score, tooth 31
- 1
- Calculus score, tooth 46
- 1
Result: OHI-S 2.0: fair oral hygiene (debris index 1.0, calculus index 1.0).
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Debris score, tooth 16
- Debris score, tooth 11
- Debris score, tooth 26
- Debris score, tooth 36
- Debris score, tooth 31
- Debris score, tooth 46
- Calculus score, tooth 16
- Calculus score, tooth 11
- Calculus score, tooth 26
- Calculus score, tooth 36
The other 2 fields
- Calculus score, tooth 31
- Calculus score, tooth 46
How this is calculated
Citation
Greene JC, Vermillion JR. The simplified oral hygiene index. J Am Dent Assoc. 1964;68:7-13. As applied in Pathogens 2026 (PMC13304723). Read the sources: Greene 1964 ↗, Pathogens 2026 ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.