← All explanationsHyperdontia

What does having extra teeth mean?

Hyperdontia means that more teeth develop than usual for that dentition. Extra teeth may erupt or remain within the jaw. Their significance mainly depends on their position and effects on neighbouring teeth.

For training & practice ↓
SMILE meets DESIGN
Teaching model with six normal anterior teeth and one additional small midline tooth.AI-generated
Mesiodens as one example of hyperdontia. Extra teeth may also occur elsewhere.
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Number and shape

An extra tooth may resemble its neighbours or have a very different shape. Counting teeth alone does not explain the whole situation.

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Observe eruption

A supernumerary tooth can obstruct or displace a permanent tooth. Markedly uneven tooth eruption needs assessment.

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Plan rather than assume

Monitoring or removal is considered according to position, development and risk. Imaging is planned when clinically indicated.

Read the full explanation

  1. Number and shape

    An extra tooth may resemble its neighbours or have a very different shape. Counting teeth alone does not explain the whole situation.

  2. Observe eruption

    A supernumerary tooth can obstruct or displace a permanent tooth. Markedly uneven tooth eruption needs assessment.

  3. Plan rather than assume

    Monitoring or removal is considered according to position, development and risk. Imaging is planned when clinically indicated.

Notes on the teaching images
  • Mesiodens as one example of hyperdontia. Extra teeth may also occur elsewhere.

For your visit: open the communication cards

Watch the short explanation ↓

At a glance

Always visible?

No; some remain within the jaw.

Possible effect?

Obstructed or altered eruption.

Assessment?

Tooth count, development and imaging if needed.

Knowledge in motion

Explained in 36 seconds.

Three steps. No audio.
Each scene can also be selected manually.

Hyperdontia: short film

Silent educational film with German on-screen text and simplified teaching images. Not a patient case or a promised treatment outcome. The full English explanation is available as text.

Go to film text

Often confused

Hyperdontia and hypodontia

Hyperdontia means extra teeth; hypodontia means some teeth did not develop.

Quick answers
Must every extra tooth be removed?

No. Benefits and risks are considered individually.

Can this occur in primary teeth?

Yes. Any implications for the permanent successors are also assessed.

Does it prove a genetic disorder?

No. Multiple extra teeth or other findings may prompt further assessment but do not prove a disorder.

At the practice

For a personal discussion

Editorially suggested question to discuss with Dr Niusha Barahmand Pour:

Does the extra tooth affect eruption or neighbouring teeth?

If a tooth erupts unusually late or unevenly, an examination can investigate the cause.

Have eruption assessedAppointment selection at Doctolib
Meet Dr. Niusha Barahmand Pour ↗
Learning layer for training & practiceUnderstand terminology and deepen knowledge
Supernumerary tooth
An extra developing tooth.
Impacted
A tooth has not erupted normally.
Mesiodens
A supernumerary tooth near the upper central incisors.

Make the distinction

Hyperdontia means extra teeth; hypodontia means some teeth did not develop.

Knowledge questionWhat matters for planning?

For learning, not for assessing personal symptoms. Your answer is not stored or sent.

  1. Position and effects on neighbouring teeth.
  2. Automatic removal in every case.
  3. Only the tooth colour.
View answer

Position and effects on neighbouring teeth.

Extra teeth can have different consequences.

Related topics
Hypodontia Unerupted or impacted tooth Tooth replacement
Sources and context

Editorial research: . General information, not an individual diagnosis or treatment recommendation. Teaching illustrations are simplified and do not depict a patient case.