| Description |
Displacement of the tooth other than axially. Displacement is accompanied by comminution or fracture of either the labial or the palatal/lingual alveolar bone.
Lateral luxation injuries, similar to extrusion injuries, are characterized by partial or total separation of the periodontal ligament. However, lateral luxations are complicated by fracture of either the labial or the palatal/lingual alveolar bone and a compression zone in the cervical and sometimes the apical area. If both sides of the alveolar socket have been fractured, the injury should be classified as an alveolar fracture (alveolar fractures rarely affect only a single tooth). In most cases of lateral luxation the apex of the tooth has been forced into the bone by the displacement, and the tooth is frequently non-mobile. |
| Visual signs |
Displaced, usually in a palatal/lingual or labial direction. |
| Percussion test |
Usually gives a high metallic (ankylotic) sound. |
| Mobility test |
Usually immobile. |
| Sensibility test |
Sensibility tests will likely give a lack of response except for teeth with minor displacements.
The test is important in assessing risk of healing complications. A positive result at the initial examination indicates a reduced risk of future pulp necrosis. |
| Radiographic findings |
Widened periapical ligament space best seen on occlusal or eccentric exposures. |
| Radiographs recommended |
As a routine: Occlusal, periapical exposure and lateral view from the mesial or distal aspect of the tooth in question. |