For a mandibular molar disto-oblique radiograph, the horizontal angulation is shifted so that the x-ray beam intersects the image receptor obliquely:
a. 5 degrees from the mesial.
b. 10 degrees from the mesial.
c. 5 degrees from the distal.
d. 10 degrees from the distal.
d. Disto-oblique periapical radiographs use a tube shift to help image posterior objects such as impacted third molars. Disto-oblique periapical radiographs of both the maxilla and the mandible require that the horizontal angulation be shifted 10 degrees from the distal.
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