Concussion and subluxation
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Concussion is an injury to the tooth-supporting structures without displacement of the tooth, but causes marked sensitivity to percussion. Subluxation is an injury with abnormal loosening of the tooth but no displacement. In concussion, bleeding and swelling occur, causing sensitivity, while subluxation damages ligament fibers, causing mobility. Clinically, concussion shows sensitivity to percussion with no mobility, while subluxation has horizontal mobility and bleeding from gingival sulcus with sensitivity. Radiographs typically show no changes, though subluxation may show slight widening of the periodontal ligament space in severe cases. Treatment involves relieving occlusal forces, splinting if loose, and a soft diet for two
Concussion and subluxation
- 2. CONCUSSION AND SUBLUXATION Concussion: An injury to the tooth –supporting structure without abnormal loosening or displacement of the tooth, but with marked reaction to percussion.
- 3. CONCUSSION AND SUBLUXATION Sub luxation (loosening): An injury to the tooth –supporting structure with abnormal loosening, but without displacement.
- 4. CONCUSSION AND SUBLUXATION Healing and pathology: In luxation injuries only minor damage has occurred in the periodontium. In the case of concussion the impact has resulted in bleedingand edema which makes the tooth sensitive to occlusal forces and to a percussion test. Abnormal mobility is not present.
- 5. CONCUSSION AND SUBLUXATION Healing and pathology: In case of sub luxation some damage to ligament fibers has occurred which makes the tooth mobile in horizontal direction and sometimes also with a small component in vertical direction
- 6. CONCUSSION AND SUBLUXATION Clinical examination: Concussion: Reveals a marked reaction to percussion in horizontal or vertical direction. The tooth shows no abnormal mobility. No bleeding from gingival sulcus. Positively to sensibility tests.
- 8. CONCUSSION AND SUBLUXATION Clinical examination: Subluxation: The tooth is mobile in horizontal direction. Sensitive to percussion and occlusal forces. Present of bleeding from gingival sulcus. Positively to sensibility tests.
- 10. CONCUSSION AND SUBLUXATION Radiographic findings: No change can be seen in the periodontal ligament space. In cases with grade 3 vertical mobility may be seen slight widening of the PDL space.
- 11. CONCUSSION AND SUBLUXATION Treatment: Relief of occlusal interferences by selective grinding of opposing teeth. Splinting if severe loosening. Soft diet for 14days.
- 13. CONCUSSION AND SUBLUXATION Follow-up : Follow-up schedule use 4 to 6 weeks. If clinical findings (including sensibility) test and radiographic examination show no abnormal findings controls can be terminated at this time.
- 14. CONCUSSION AND SUBLUXATION complication : Pulp necrosis Pulp resoption
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