Authors of section


J Andreasen, CP Cornelius, N Gellrich, S Hillerup, K Kusumoto, W Schubert

Executive Editors

Edward Ellis III, Kazuo Shimozato

General Editor

Daniel Buchbinder

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Tooth luxation, without displacement - Concussion

Definition and clinical appearance

Concussion is defined as a physical injury to the tooth-supporting structures, without fracture, abnormal loosening, or displacement of the tooth. The only sign and symptom is a marked tenderness to percussion and “a sore tooth”.

Response to pulp testing may be temporarily absent during the acute phase. No immediate action should be taken related to endodontic treatment.


Clinical photograph showing central incisors after trauma. There are no visible signs of trauma to the teeth (eg, no bleeding from periodontal pockets, and no change of tooth position).

This photograph shows a patient whose lateral incisors have not yet reached their final position.

Lateral incisors have not yet reached their final position

Radiographic findings

Intraoral films demonstrate that the incisors are in their normal position in the socket.

Incisors are in their normal position in the socket
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