Simplified Positioning for Dental Radiography

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Three Simple Rules

All positioning errors involve the three parameters of tube angulation, tube position and film position. Three simple rules serve to identify and correct any errors.

  1. If the image is foreshortened or elongated, adjust the tube angle. To make the roots longer, move the tube head more laterally.
  2. If you cut the target off at the edge of the beam (cone cut), simply move the beam over toward the area of cone cut.
  3. If you cut the target off at the edge of the film, move the film over toward the area you cut off.