Intrusive Luxation Definition — ORE Part 1 MCQ

Instant feedback + full explanation. One question, done properly.

EasyOral SurgeryIntrusive Luxation DefinitionORE Part 1

What is the classification of a permanent tooth injury where the tooth has been pushed bodily into the alveolar bone?

Educational content. Not a substitute for clinical judgement or local policy.

Reveal the answer and explanation

Correct answer: D — Intrusive luxation

Explanation lettering: B = shown as A · E = shown as B · D = shown as C · A = shown as D · C = shown as E

The correct answer is A: Intrusive luxation. This injury is defined as apical (inward) displacement of a tooth into its socket following an axial impact force that drives the tooth bodily deeper into the alveolus. Extrusive luxation (B) involves the opposite—partial or total displacement outward. Lateral luxation (C) involves bucco-lingual or mesio-distal displacement, not apical. Subluxation (D) describes increased mobility without actual displacement. Avulsion (E) is complete separation from the socket. Intrusive luxation represents one of the most severe dental trauma types because of extensive damage to the periodontal ligament, pulp, and alveolar bone.

Reference: Andreasen JO, Andreasen FM (WHO ICD Dental Trauma Classification). Intrusive luxation defined as apical displacement into socket; applied in international consensus and UK SDCEP trauma management protocols. See The Lancet Global Health 2018 (Index 5-2) and peer-reviewed case reports (PMC8166499, PMC4352940, PubMed 26208064). https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8166499/