Endodontics · single question

Which dental trauma has the WORST prognosis?

  1. Intrusion
  2. Extrusion
  3. Subluxation
  4. Concussion
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Correct answer: A. Intrusion

  • A. Correct. Intrusive luxation (tooth driven into bone) most severely damages the pulp and PDL → highest risk of necrosis, ankylosis and resorption.
  • B. Extrusion has a better prognosis than intrusion.
  • C. Subluxation (loosening without displacement) generally heals well.
  • D. Concussion (no displacement/mobility) has the best prognosis.

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