Endodontics · single question

Which luxation injury is non-axial and typically involves a fracture of the alveolar bone?

  1. Concussion
  2. Extrusion
  3. Lateral luxation
  4. Intrusion
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Correct answer: C. Lateral luxation

  • A. Incorrect – no displacement and no fracture.
  • B. Incorrect – axial (out-of-socket) displacement without the bony wall fracture pattern.
  • C. Correct – lateral luxation displaces the tooth sideways and characteristically fractures the labial/socket alveolar wall.
  • D. Incorrect. Intrusion is an axial (apical) displacement into the socket; lateral luxation is the non-axial injury classically accompanied by alveolar bone fracture.

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