What is the time limit for repositioning?
Dental trauma questions test protocol-level decisions — splint type, duration, follow-up timing — where one wrong detail means a wrong answer. This exam-level vignette tests your ability to work through clinical details and arrive at the correct management.
A 15-year-old boy's upper central incisor (closed apex) was replanted by his coach at the sports field within 5 minutes of avulsion. He presents to the dental clinic 30 minutes later with the tooth in situ but slightly rotated. The tooth was replanted in a slightly rotated position. What is the time limit for repositioning?
- A. Repositioning should occur immediately — any delay beyond the first hour risks ankylosis
- B. Repositioning is contraindicated once a tooth has been replanted at the accident scene
- C. Repositioning can be considered for up to 48 hours after the original traumatic incident
- D. Repositioning is only appropriate if radiographs confirm no root fracture has occurred
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Show the answer and cited explanation
IADT closed apex, replanted at site: 'If the tooth or teeth were replanted in the wrong socket or rotated, consider repositioning the tooth/teeth into the proper location up to 48 hours after the traumatic incident.' SOURCE — Fouad AF et al. IADT Avulsion Guidelines, Dent Traumatol 2020;36:331-342, Section 3.1.1, item 5
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