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Endodontics · single question

A radiograph shows combined lateral and apical rarefaction. What is the most likely diagnosis?

  1. Vertical root fracture
  2. Horizontal root fracture
  3. Chronic apical periodontitis
  4. Internal resorption
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Correct answer: A. Vertical root fracture

  • A. CORRECT. A vertical root fracture classically produces a combined lateral and apical (J-shaped or halo) radiolucency along the root.
  • B. INCORRECT. A horizontal fracture shows a transverse line, not this combined pattern.
  • C. INCORRECT. Chronic apical periodontitis is confined to the apex.
  • D. INCORRECT. Internal resorption shows a ballooned radiolucency within the canal.

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