The facial exposure from a panoramic radiograph is roughly equivalent to two bitewings.

Question

Quizplus · Accepted Answer

The facial exposure from a panoramic radiograph is significantly less than that from a full-mouth series of intraoral radiographs, but it is more than the exposure from just two bitewings. A panoramic radiograph covers a much larger area, including both jaws and surrounding structures, whereas bitewings are limited to showing the crowns of the upper and lower teeth and the height of the alveolar bone.

The Facial Exposure from a Panoramic Radiograph Is Roughly Equivalent