Which of the following would be the least valuable radiographic assessment for the patient with periodontal disease?
A) A vertical bitewing series
B) Periapical radiographs exposed using the paralleling technique
C) A horizontal bitewing series
D) Periapical radiographs exposed using the bisecting technique
D
Explanation: A) Bitewing radiographs, especially when positioned vertically, are most useful for examining the periodontium. The precise parallelism established between the tooth and the film plane when taking bitewing radiographs makes it possible to image the alveolar crestal bone accurately. To achieve this same degree of accuracy when using periapical radiographs, the paralleling technique must be used. The bisecting technique does not achieve the same precise film packet placement and accurate vertical angulation required for imaging the alveolar bone crest.
B) Bitewing radiographs, especially when positioned vertically, are most useful for examining the periodontium. The precise parallelism established between the tooth and the film plane when taking bitewing radiographs makes it possible to image the alveolar crestal bone accurately. To achieve this same degree of accuracy when using periapical radiographs, the paralleling technique must be used. The bisecting technique does not achieve the same precise film packet placement and accurate vertical angulation required for imaging the alveolar bone crest.
C) Bitewing radiographs, especially when positioned vertically, are most useful for examining the periodontium. The precise parallelism established between the tooth and the film plane when taking bitewing radiographs makes it possible to image the alveolar crestal bone accurately. To achieve this same degree of accuracy when using periapical radiographs, the paralleling technique must be used. The bisecting technique does not achieve the same precise film packet placement and accurate vertical angulation required for imaging the alveolar bone crest.
D) Bitewing radiographs, especially when positioned vertically, are most useful for examining the periodontium. The precise parallelism established between the tooth and the film plane when taking bitewing radiographs makes it possible to image the alveolar crestal bone accurately. To achieve this same degree of accuracy when using periapical radiographs, the paralleling technique must be used. The bisecting technique does not achieve the same precise film packet placement and accurate vertical angulation required for imaging the alveolar bone crest.
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