Eichner Index (Occlusal Support)
Eichner index of occlusal support, A1 to C3, from the posterior support zones in contact.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Posterior support zones in contact
- 2 zones
Result: Eichner B2: two posterior support zones. Class B: occlusal support partly lost.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Posterior support zones in contact
- With four zones: teeth missing in none, one or both arches
- With no zones: anterior teeth in contact
- With no contact: teeth in both arches, one arch or none
How this is calculated
Citation
Eichner K. Über eine Gruppeneinteilung der Lückengebisse für die Prothetik. Dtsch Zahnärztl Z. 1955;10:1831-1834. Read the sources: J Nutr Health Aging 2018 ↗, J Oral Rehabil 2026 ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.