Health Dictionary Find a Doctor

Root canal


Overview

Overview

File:Root Canal Illustration Molar.svg
Root canal procedure: unhealthy tooth, drilling, filing with endofile, rubber filling and crown

Root canals is the commonly used term for the main canals within the dentin of the tooth. These are part of the natural cavity within a tooth that consists of the dental pulp chamber, the main canals, and sometimes more intricate anatomical branches that may connect the root canals to each other or to the root surface of the tooth. Root canals are filled with a highly vascularized, loose connective tissue, the dental pulp. This sometimes becomes infected and inflamed, generally due to caries or tooth fractures that allow microorganisms, mostly bacteria from the oral flora or their byproducts, access to the pulp chamber or the root canals; the infected tissue is removed by a surgical intervention known as endodontic therapy and commonly called ‘a root canal’.

Tooth structure

Tooth structure

File:Root Canal After 2.jpg
An X-Ray of a recently performed Root canal procedure. The root was forming an abscess (infection), and as a result a bulb of some of the canal filling ‘leaked’ into the abscess

At the center of a tooth is a hollow area that houses soft tissue, known as pulp. This hollow area contains a relatively wide space towards the chewing surface of the tooth called the pulp chamber. This chamber is connected to the tip of the root of the tooth via thin hollow pipe-like canals—hence, the term “root canal”. Human teeth normally have one to four canals, with teeth toward the back of the mouth having the most. These canals run through the center of the roots like pencil lead runs through the length of a pencil. The tooth receives nutrition through the blood vessels and nerves traversing these canals.

See also

See also

References

References

External links


Template:Endodontology

zh-min-nan:Kin-kńg tī-liâu de:Wurzelkanalbehandlung he:טיפול שורש nl:Wortelkanaalbehandeling hu:Gyökérkezelés no:Rotfylling sk:Ošetrenie koreňového kanálika fi:Juurihoito sv:Rotfyllning

Template:WH Template:WS

Looking for the patient version?

Back to the patient-friendly article

© 2026 MyEClinic – IFTM Institut für Telematik in der Medizin GmbH