The x-ray beam must be perpendicular to the tooth and film in order to minimize:

Question

Quizplus · Accepted Answer

Dimensional distortion occurs when the x-ray beam is not perpendicular to the tooth and film, which results in elongation or foreshortening of the image. By making sure that the beam is perpendicular, these distortions can be minimized. Choices A, B, and C are related to image quality, but are not directly affected by the angle of the x-ray beam.

The X-Ray Beam Must Be Perpendicular to the Tooth and Film