For a maxillary molar disto-oblique periapical radiograph, the vertical angulation is

that used for the standard paralleling technique.

a. increased by 5 degrees over
b. increased by 10 degrees over
c. decreased by 5 degrees from
d. decreased by 10 degrees from

a. Most impactions, or foreign objects in the posterior region of the maxilla, will be located farther superior than the erupted teeth, making it necessary to increase the vertical angulation by 5 degrees over the standard setting.