Subluxation - Diagnostic signs


Description An injury to the tooth supporting structures resulting in increased mobility, but without displacement of the tooth. Bleeding from the gingival sulcus confirms the diagnosis
Visual signs Not displaced.
Percussion test Tender to touch or tapping.
Mobility test Increased mobility.
Pulp sensibility test Sensibility testing may be negative initially indicating transient pulpal damage. Monitor pulpal response until a definitive pulpal diagnosis can be made.

There will be a positive sensibility test result in about half the cases. The test is important in assessing future risk of healing complications. A lack of response at the initial test indicates an increased risk of later pulp necrosis.
Radiographic findings Usually no radiographic abnormalities.
Radiographs recommended As a routine: Occlusal, periapical exposure and lateral view from the mesial or distal aspect of the tooth.

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.