Radiology · single question

An edentulous patient has one remaining lower incisor root and no other teeth. What is the most appropriate radiographic survey?

  1. Full-mouth periapical series only
  2. Panoramic radiograph (OPG) plus a periapical of the retained root
  3. Bitewing radiographs only
  4. CBCT only
Show answer and explanation

Correct answer: B. Panoramic radiograph (OPG) plus a periapical of the retained root

For an edentulous or nearly edentulous patient, a panoramic radiograph (OPG) provides a comprehensive overview of the jaws, TMJ, and any remaining dental structures, residual ridge, and pathology. A supplemental periapical radiograph of the retained root provides detailed information about root morphology, periapical status, and relationship to surrounding structures needed for treatment planning (extraction vs. leave in place). This combination is both efficient and diagnostically comprehensive, avoiding the need for a full-mouth periapical series in an edentulous patient.

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