# calculus

> form of hardened dental plaque

**Wikidata**: [Q144037](https://www.wikidata.org/wiki/Q144037)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Calculus_(dental))  
**Source**: https://4ort.xyz/entity/calculus-q144037


## References

1. [Source](https://github.com/JohnMarkOckerbloom/ftl/blob/master/data/wikimap)
2. [Nuovo soggettario](https://thes.bncf.firenze.sbn.it/termine.php?id=66301)
3. Integrated Authority File
4. YSO-Wikidata mapping project
5. BabelNet
6. UMLS 2023
7. Quora
8. [Source](https://fr.dentist/kb/tartar/)
9. National Library of Israel Names and Subjects Authority File
10. GF WordNet
11. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)