Lateral Luxation — ORE Part 1 MCQ
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Correct answer: B — 4 weeks
Explanation lettering: C = shown as A · A = shown as B · D = shown as C · E = shown as D · B = shown as E
Lateral luxation of permanent teeth with closed apices requires stabilisation with a flexible splint for 4 weeks. This duration allows adequate periodontal ligament healing and reattachment whilst avoiding prolonged immobilisation, which increases the risk of ankylosis and inflammatory root resorption. Option B (2 weeks) is insufficient for complete periodontal reattachment in lateral injuries. Options D and E (6–8 weeks) are indicated for open apex teeth where continued root development and revascularisation is possible; closed apex teeth lack this regenerative potential and do not require extended splinting. Option C (1 week) is too short for any significant periodontal healing. Current evidence from case series and IADT consensus guidelines supports 4 weeks as the standard for this injury type.
Reference: International Association of Dental Traumatology (IADT) Guidelines for the Management of Traumatic Dental Injuries: Fractures and Luxations of Permanent Teeth (2017); supported by clinical evidence including Diangelis et al. (2012) and case series demonstrating 4-week splinting outcomes in laterally luxated permanent teeth with closed apices. https://pubmed.ncbi.nlm.nih.gov/19021659/