Start practicing

Endodontics · single question

The same patient reports trauma to teeth #24, 25, 26 with color changes. If internal bleaching is done without proper sealing, what could be the problem?

  1. The bleaching becomes too white
  2. External root resorption
  3. Internal root resorption
  4. The bleaching becomes less white
Show answer and explanation

Correct answer: B. External root resorption

  • A. Over-whitening is not the hazard associated with inadequate sealing.
  • B. Correct. Without a protective cervical seal/barrier, bleaching agent can diffuse through the dentinal tubules to the external cervical area and trigger external (cervical) root resorption — the classic complication of internal bleaching.
  • C. The recognized resorptive complication of unsealed internal bleaching is EXTERNAL (cervical) resorption, not internal.
  • D. Loss of whitening is unrelated to the sealing step.

Practice Endodontics questions Endodontics study notes

More Endodontics practice questions