Failing to record the apical region of the teeth on a periapical radiograph most likely results from an error made in which of the following steps?
A) Placement of the image receptor
B) Horizontal angulation
C) Vertical angulation
D) Centering the x-ray beam
C
Explanation: A) Inadequate (not steep enough) vertical angulation will result in less of the apical region being recorded onto the radiograph.
B) Inadequate (not steep enough) vertical angulation will result in less of the apical region being recorded onto the radiograph.
C) Inadequate (not steep enough) vertical angulation will result in less of the apical region being recorded onto the radiograph.
D) Inadequate (not steep enough) vertical angulation will result in less of the apical region being recorded onto the radiograph.
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