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Protecting All Children's Teeth (PACT): A Pediatric Oral Health Training Program
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Dental Trauma, continued

4. Intrusion
With intrusion injuries, the tooth is pushed into the socket and the alveolar bone. It may appear shortened or barely visible.

Intrusion has a poor prognosis and high risk for complications, including root resorption, pulp necrosis, and infection. May require a root canal.

Pulp: The highly vascular sensitive tissue occupying the central cavity of a tooth.

Intrusion injuries may also damage underlying permanent dentition, especially if an infection develops.

With intrusion injuries, teeth may re-erupt. If a primary tooth does NOT re-erupt, it will require extraction to not interfere with permanent tooth eruption. 

Recommended treatment:

Do not attempt to remove intruded tooth. Instead, focus on pain control and consider antibiotic prophylaxis.
For a primary tooth, seek dental evaluation within 1 week (or earlier, for significant symptoms).
For a permanent tooth, refer to a dentist immediately for repositioning and splinting.

5. Extrusion
With an extrusion injury, the tooth is partially displaced from its socket. 

This type of injury requires re-positioning and stabilization.

Refer to a dentist promptly to evaluate the extent of injury, as well as any associated injury (e.g. fracture).

Fast Facts
All permanent tooth injuries should be examined by a dentist, with the timeline dictated by the type of injury.
Repositioning and splinting are often required for tooth injuries.
90% of intruded primary teeth re-erupt within 6 months.

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