To clearly image the proximal surfaces of malaligned or crowded teeth, which of the following may be necessary?

A) A smaller image receptor positioned lower in the oral cavity
B) A smaller image receptor positioned higher in the oral cavity
C) Additional radiographs varying the horizontal angulation
D) Additional radiographs varying the vertical angulation

C
Explanation: A) When teeth are malaligned or crowded, it may be necessary to take additional radiographs at various horizontal angles to image every interproximal area clearly, with no overlap. The image receptor should be positioned perpendicularly to the embrasures of each tooth as necessary.
B) When teeth are malaligned or crowded, it may be necessary to take additional radiographs at various horizontal angles to image every interproximal area clearly, with no overlap. The image receptor should be positioned perpendicularly to the embrasures of each tooth as necessary.
C) When teeth are malaligned or crowded, it may be necessary to take additional radiographs at various horizontal angles to image every interproximal area clearly, with no overlap. The image receptor should be positioned perpendicularly to the embrasures of each tooth as necessary.
D) When teeth are malaligned or crowded, it may be necessary to take additional radiographs at various horizontal angles to image every interproximal area clearly, with no overlap. The image receptor should be positioned perpendicularly to the embrasures of each tooth as necessary.