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Dental Radiography: Exam 2 Review Questions And Answers.
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Dental Radiography: Exam 2 Review Questions And Answers.
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Dental Radiography: Exam 2 Review Questions And Answers.________ 1 Which of the following describes a use of a panoramic image?
a diagnosis of caries
b evaluation of periodontal disease
c evaluation of impacted molars
d evaluation of periapical disease Answer - c
________ 2 The zone in which structures are clearly demonstrated on a panoramic image is termed:
a the focal trough
b the rotation center
c the ghost image
d the midsagittal plane Answer - a
________ 3 Rare earth intensifying screens are recommended in panoramic imaging
because:
a rare earth screens emit a blue light
b rare earth screens provide a more diagnostic image
c rare earth screens require less x-ray exposure for the patient
d the images convert faster in automatic processors Answer - c
________ 4 A thyroid collar is not recommended in panoramic imaging because:
a it blocks the x-ray beam and obscures information
b there is a relatively low dose of radiation to the thyroid gland in panoramic imaging
c it is impossible to sterilize the thyroid collar
d all of the above Answer - a
________ 5 The imaginary line that passes from the bottom of the eye socket through the top of the ear canal is termed:
a the midsagittal plane
b the Frankfort plane
c the vertebral plane
d the orbital plane Answer - b
________ 1 Calibration of dental x-ray equipment can be performed by a dentist, dental hygienist, or dental assistant.
a true
b false Answer - b
________ 2 Annual tests for dental x-ray machines can be performed by a dentist, dental hygienist, or dental assistant.
a true
b false Answer - a ________ 3 For quality control purposes, each new box of unopened film should be tested for film freshness and fogging before it is used.
a true
b false Answer - a
________ 4 After processing, fresh film that has been properly stored and protected will appear ________.
a fogged
b clear with a slight blue tint
c clouded with a blue tint
d dark blue
e totally black Answer - b
________ 5 After performing the film-screen contact test, a wire mesh image of uniform density appears. These results indicate ________.
a adequate film-screen contact
b inadequate film-screen contact Answer - a
________ 6 When functioning properly, a viewbox should emit a uniform and brilliant
light.
a true
b false Answer - b
________ 7 One of the most critical areas of quality control that requires daily monitoring is ________.
a examination of the fluorescent bulbs inside the viewbox
b cleaning the extraoral intensifying screens
c examination of the darkroom for light-tightness
d processing of films
e all of the above Answer - d
________ 8 The coin test is used to check ________.
a proper safelighting
b strength of the processing solution
c film density
d film-to-screen contact
e beam collimation Answer - a
________ 9 The following must be closely monitored with manual processing techniques:
a temperature of the water bath
b levels of the processing solutions
c accuracy of the timer
d accuracy of the thermometer
e all of the above Answer - e
________ 10 On the average, processing solutions should be changed ________.
a once each day
b once each week
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