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Endodontics · single question

For a replanted avulsed permanent tooth with a CLOSED apex, when is root canal treatment typically initiated?

  1. About 7–10 days after replantation (before splint removal)
  2. Immediately at replantation
  3. Only if pain develops months later
  4. Never
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Correct answer: A. About 7–10 days after replantation (before splint removal)

  • A. Correct. For a mature (closed-apex) tooth, RCT is begun roughly 7–10 days after replantation (around 1–2 weeks), before/at splint removal, to prevent inflammatory resorption.
  • B. Immediate RCT at the chair-side replantation is not standard; stabilize first.
  • C. Delaying until symptomatic months later allows inflammatory root resorption.
  • D. A closed-apex avulsed tooth requires RCT (revascularization is attempted only for open apices).

Note: Open-apex teeth may be monitored for revascularization; closed-apex teeth need RCT ~7–10 days post-replantation.

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