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Radiology · single question

A periapical radiograph shows FORESHORTENING of the teeth. Cause?

  1. Too much (excessive) vertical angulation
  2. Too little vertical angulation
  3. Incorrect horizontal angulation
Show answer and explanation

Correct answer: A. Too much (excessive) vertical angulation

  • A. Correct. Excessive vertical angulation of the beam causes foreshortened (too short) images. (Remember: too much angle = too short.)
  • B. Incorrect. Insufficient vertical angulation causes ELONGATION, not foreshortening.
  • C. Incorrect. Horizontal angulation errors cause overlapping of contacts, not foreshortening.

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