Dental intrusion
From Wikipedia, the free encyclopedia
| Dental intrusion | |
|---|---|
| Other names | Intrusive luxation |
| Specialty | Dentistry, Oral and maxillofacial surgery |
| Symptoms | Shortened appearance of tooth, lack of mobility, metallic sound on percussion |
| Complications | Pulp necrosis, Root resorption, Ankylosis (dentistry) |
| Treatment | Spontaneous re-eruption, orthodontic repositioning, surgical repositioning |
| Prognosis | Variable; high risk of pulp and periodontal damage |
Dental intrusion is an apical displacement of the tooth into the alveolar bone.[1] This injury is accompanied by extensive damage to periodontal ligament, cementum, disruption of the neurovascular supply to the pulp, and communication or fracture of the alveolar socket.[2]
Intrusive traumas have been found to comprise 0.3-1.9% of the traumas affecting permanent dentition.
Clinical and radiographical presentation
In most cases of intrusion with fully erupted permanent dentition, diagnosis can be made by comparing incisal height of teeth next to the injured one. In cases with mixed dentition, a percussion test must be performed as an intruded tooth can mimic an erupting tooth.
Clinical findings show shortened crown length to various degree and up to no visible crown in severe cases. Tooth is immobile, and percussion gives high, metallic sound. Bleeding around crown margins can be observed.[3]
Radiographical findings shows dislocation of root in an apical direction, and periodontal ligament space is not continuous or can disappear completely.[3]
