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WorksheetsRAD Chapter 19
Total questions: 10
Worksheet time: 5mins
Identify this image; it is mounted using the labial view.
Maxillary left molar
Mandibular left molar
Identify this image; it is mounted using the labial view.
Maxillary right incisor
Maxillary left incisor
Identify the major placement error in this periapical molar image.
Placed too far mesially
Placed too far distally
According to the basic principles of the paralleling technique, the receptor is placed in the mouth _________ to the long axis of the tooth being x-rayed, and the central ray of the x-ray beam is directed ____________ to the receptor and long axis of the tooth.
parallel; perpendicular
parallel; parallel
To achieve parallelism between the receptor and the tooth, the ____________ distance must be increased to keep the receptor parallel with the long axis of the tooth.
object-receptor
target-receptor
Image magnification occurs with the paralleling technique when the ______________ distance is increased.
target-object
object-receptor
Image magnification with the paralleling technique is decreased when the _______________ distance is increased.
object-receptor
target-receptor
Reusable receptor holders must be _________________ after each use.
placed in an immersion disinfectant
sterilized
How many exposures of the posterior teeth will you need to take when using the paralleling technique?
Seven
Eight
Parallel is defined as
moving or lying in the same plane, always separated by the same distance and not intersecting.
an angle of 90 degrees formed by two lines perpendicular to each other.
