Determining the vertical angulation for exposure of a cross-sectional occlusal radiograph is assisted by positioning the open end of the PID parallel to the external aiming device of the image receptor holder.

Question

Quizplus · Accepted Answer

For a cross-sectional occlusal radiograph, the vertical angulation is determined by directing the central ray perpendicular (at a 90-degree angle) to the film, not by positioning the PID parallel to the external aiming device of the image receptor holder.

Determining the Vertical Angulation for Exposure of a Cross-Sectional Occlusal