Oral Health Assessment Tool (OHAT)
Oral Health Assessment Tool: eight items rated healthy, changes or unhealthy, totaled out of 16, with the unhealthy items named.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Lips
- 0: healthy
- Tongue
- 1: changes
- Gums and tissues
- 2: unhealthy
- Saliva
- 0: healthy
- Natural teeth
- 1: changes
- Dentures
- 0: healthy
- Oral cleanliness
- 2: unhealthy
- Dental pain
- 0: healthy
Result: OHAT 6 of 16. Unhealthy: gums and tissues, oral cleanliness. Changes: tongue, natural teeth.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Lips
- Tongue
- Gums and tissues
- Saliva
- Natural teeth
- Dentures
- Oral cleanliness
- Dental pain
How this is calculated
Citation
Chalmers JM, King PL, Spencer AJ, Wright FA, Carter KD. The oral health assessment tool: validity and reliability. Aust Dent J. 2005;50(3):191-199. Read the sources: Chalmers 2005 ↗, J Nutr Health Aging 2021 ↗, BMC Oral Health 2026 ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.