Concussion - Diagnostic signs


Description An injury to the tooth-supporting structures without increased mobility or displacement of the tooth, but with pain to percussion.
Visual signs Not displaced.
Percussion test Tender to touch or tapping.
Mobility test No increased mobility.
Pulp sensibility test Usually a positive result.
The test is important in assessing future risk of healing complications. A lack of response to the test indicates an increased risk of later pulp necrosis.
Radiographic findings No radiographic abnormalities, the tooth is in-situ in its socket.
Radiographs recommended As a routine: Occlusal, periapical exposure and lateral view from mesial or distal aspect of the tooth in question. This should be done in order to exclude displacement.

Percussion test


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Mobility test


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Sensitivity test


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Radiography


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Dental Trauma Guide 2010 - produced in cooperation with the Resource Centre for Rare Oral Diseases and Department of Oral and Maxillo-Facial Surgery
at the University Hospital of Copenhagen - Last edited the 07-01-2014.