Endodontics · single question

X-ray of premolar #5 showing a horizontal fracture at the middle third (very clear). Diagnosis and best treatment?

  1. Root fracture — Extraction
  2. Root fracture — Splinting and observation
  3. Periapical cyst — RCT
  4. Vertical root fracture — RCT
Show answer and explanation

Correct answer: A. Root fracture — Extraction

  • A. Correct. A clearly visualized horizontal root fracture at the middle third generally has a poor prognosis for retention, and extraction is the indicated treatment in this scenario.
  • B. Splinting/observation is more appropriate for fractures near the apex with better prognosis (or very recent injuries with mobile but viable segments), not the standard answer for a clear, established mid-root horizontal fracture as described here.
  • C. This finding describes a fracture, not a periapical cyst.
  • D. This is described as a horizontal (not vertical) fracture, and a vertical root fracture would generally also have a poor prognosis warranting extraction, not RCT.

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