Dental Trauma and Regenerative Endodontics
Dental Trauma and Regenerative Endodontics tests triage of luxation and avulsion injuries and the management of immature teeth with necrotic pulps.
Core rules
- Avulsed permanent teeth are handled by the crown, stored in milk or saline, and replanted as soon as possible; extraoral dry time strongly affects prognosis.
- Splint avulsed or luxated teeth flexibly for about two weeks; longer rigid splinting increases ankylosis risk.
- Check tetanus status and consider systemic antibiotics according to local protocol; do not curette the socket.
- Immature necrotic teeth may be treated with regenerative endodontic procedures: minimal instrumentation, disinfection with NaOCl and EDTA, blood clot induction, and a bioceramic coronal seal.
- Follow up clinically and radiographically because revascularisation, root development, and resorption are time-dependent.
Worked example
A 10-year-old avulses a maxillary central incisor; dry time is 30 minutes. The tooth is replanted, splinted flexibly, and reviewed. If the pulp becomes necrotic and the apex is open, a regenerative procedure is preferred over immediate full canal obturation to permit continued root development.
Traps that cost marks
Scraping the root or socket; using a rigid long-term splint; starting conventional obturation in an immature tooth before considering regeneration; and missing follow-up for inflammatory resorption.