Which of the following is not an advantage of the paralleling technique?

A) It is ideal for positioning radiographs for children.
B) It minimizes superimposition of adjacent structures.
C) It produces images with minimal dimensional distortion.
D) With appropriate image receptor-holding devices, it takes less time than trying to locate the position of an imaginary bisector.

A
Explanation: A) Parallel placement of the image receptor may be difficult to achieve on certain patients: children, adults with small mouths, low palatal vaults, or the presence of tori; patients with sensitive oral mucosa or an exaggerated gag reflex, edentulous regions.
B) Parallel placement of the image receptor may be difficult to achieve on certain patients: children, adults with small mouths, low palatal vaults, or the presence of tori; patients with sensitive oral mucosa or an exaggerated gag reflex, edentulous regions.
C) Parallel placement of the image receptor may be difficult to achieve on certain patients: children, adults with small mouths, low palatal vaults, or the presence of tori; patients with sensitive oral mucosa or an exaggerated gag reflex, edentulous regions.
D) Parallel placement of the image receptor may be difficult to achieve on certain patients: children, adults with small mouths, low palatal vaults, or the presence of tori; patients with sensitive oral mucosa or an exaggerated gag reflex, edentulous regions.