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Endodontics · single question

For that same retreatment case, the underlying cause of the persistent pain/lesion is:

  1. Bacterial (re)infection of the root canal system
  2. Occlusal trauma alone
  3. A normal healing response
  4. Allergy to the sealer
Show answer and explanation

Correct answer: A. Bacterial (re)infection of the root canal system

  • A. Correct. Persistent periapical pathology after inadequate treatment is driven by bacteria remaining in/reinfecting the canal system (residual or leakage-related microbial infection).
  • B. Occlusal trauma alone does not explain an under-filled, infected canal with periapical pathology.
  • C. Persistent pain is not normal healing.
  • D. Sealer allergy is rare and not the typical cause of persistent periapical infection.

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