Avulsion Prognosis Factor — ORE Part 1 MCQ
Instant feedback + full explanation. One question, done properly.
Educational content. Not a substitute for clinical judgement or local policy.
Reveal the answer and explanation
Correct answer: C — The duration of extra-alveolar dry time
The correct answer is C. Extra-alveolar dry time is the key prognostic factor because desiccation rapidly compromises periodontal ligament cell viability. UK SDCEP guidance therefore prioritises immediate reimplantation of an avulsed permanent tooth where feasible and, if this cannot be done, immediate moist storage; prolonged delay increases resorption and reduces tooth longevity. Patient age and root maturity can affect healing and the pattern of complications, but do not outweigh preservation of periodontal ligament viability. Tooth type is not the principal determinant. Flexible splinting is important after replantation, but cannot reverse damage caused by drying. Antibiotics may be considered in selected clinical circumstances, but they do not determine the fundamental periodontal prognosis.
Reference: Scottish Dental Clinical Effectiveness Programme (SDCEP), Management of Acute Dental Problems: Injuries to the mouth, face and jaws, accessed July 2026, https://www.acutedentalproblems.sdcep.org.uk/guidance/management-of-oral-conditions/less-common-oral-conditions/injuries-to-the-mouth-face-and-jaws/