paralleling technique angulation

Mosby's Dental Dictionary:

paralleling technique angulation

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n

The proper angle for taking a periapical x-ray using the paralleling technique. The central ray should be directed through the interproximal area roughly at the center of the film while the vertical angle should be at a precise right angle to the film. This technique is sometimes preferable because, unlike the bisecting angle technique, no x-rays are directed at the thyroid.

Vertical angulation. (Haring/Jansen, 2000)

Vertical angulation. (Haring/Jansen, 2000)

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