A radiograph of an AP open-mouth projection reveals that the base of the skull is superimposed over the dens.What positioning error led to this radiographic outcome?

Question

Quizplus · Accepted Answer

Excessive extension of the skull led to the base of the skull being superimposed over the dens. This is because the extension causes the skull to move backward, making the base of the skull appear larger and superimpose over the dens, which is located anteriorly.

A Radiograph of an AP Open-Mouth Projection Reveals That the Base