| Description |
Displacement of the tooth into the alveolar bone. This injury is accompanied by comminution or fracture of the alveolar socket. |
| Visual signs |
The tooth is displaced axially into the alveolar bone. |
| Percussion test |
Usually gives a high metallic (ankylotic) sound. |
| Mobility test |
The tooth is immobile. |
| Sensibility test |
Lack of response except in rare cases, for teeth with minor displacements.
The test is important in assessing risk of healing complications. If the result is positive at the initial examination the tooth will have a significantly reduced risk of pulp necrosis.
In immature, not fully developed teeth, pulpal revascularization may occur. |
| Radiographic findings |
The periodontal ligament space may be absent from all or part of the root. |
| Radiographs recommended |
As a routine: Occlusal, periapical exposure and lateral view from the mesial or distal aspect of the tooth in question. If the tooth is totally intruded a lateral exposure is indicated to make sure the tooth has not penetrated the nasal cavity. |