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What lies beneath the visible tooth crown?

The tooth root is the part of a natural tooth anchored within its socket. It consists mainly of dentine and is covered by cementum. Root canals run inside it; supporting fibres connect the root to the surrounding bone.

For dental trainees & teams
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Medical teaching illustration: Anchorage below the crownAI-generated
Simplified educational illustration · not a patient case
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Anchorage below the crown

A tooth may have one or more roots. They lie in the socket and are supported by the periodontium.

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Hard outside, a canal inside

Dentine forms most of the root. Cementum covers its outside, while canals contain pulp tissue in an untreated vital tooth.

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The root is not just a nerve

Root canal treatment treats the canal system. The natural root itself usually remains and continues to anchor the tooth.

At a glance

Where is the root?

Below the natural crown, within the bony tooth socket.

What does it do?

Together with the surrounding supporting tissues, it anchors the tooth.

Why does the distinction matter?

Treating the root canal does not automatically mean removing the tooth root.

Knowledge in motion

Explained in 36 seconds.

Three steps. Straight to the point.
Explanations are also shown on screen.

Short film (German): What lies beneath the visible tooth crown?

Silent film in German · English explanations in the three views above

Often confused

Tooth root or root canal?

The root is an anatomical part of a tooth. A root canal is a space within that root.

Quick answers
Does every tooth have just one root?

No. The number and shape depend on the tooth and individual anatomy.

Is the root removed during root canal treatment?

Usually not. The canal system inside the retained root is cleaned and filled.

Is the outside of the root covered by enamel?

No. Its surface is typically covered by cementum; enamel covers the natural crown.

At the practice

For your consultation

A question to discuss with Dr. med. dent. Niusha Barahmand Pour:

Which parts of my tooth are affected, and what can be preserved?

At the practice, the findings, personal wishes and possible next steps are discussed through a consultation and examination.

Questions about the structure of an affected tooth can be explained using your findings.

Discuss your tooth findingsChoose an appointment on Doctolib
Meet Dr. med. dent. Niusha Barahmand Pour
Learning for dental trainees & teamsUnderstand clinical terms and build your knowledge

Build on the simple explanation with clinical terms, key distinctions and a knowledge question.

Radix
The Latin word for root.
Apex
The tip of the tooth root.
Root canal
The space within a root containing pulp tissue or, after treatment, a root filling.

Know the difference

The canal system lies within the tooth root; the two terms do not mean the same thing.

Knowledge questionWhich structure lies inside the root?

This question supports learning. It does not assess personal symptoms.

  1. The root canal.
  2. The enamel covering the entire crown.
  3. The maxillary sinus.
Show answer and explanation

The root canal.

The root canal runs within the dentine of the root.

Sources for further learning
Sources and context

Editorial research: 23 October 2026. This explanation covers general principles and does not replace a personal examination. Suitable treatment is discussed following individual assessment.