Dental Radiography: Exam 2 Review

Dental Radiography: Exam 2 Review ________ 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 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 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 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 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 b ________ 1 Calibration of dental x-ray equipment can be performed by a dentist, dental hygienist, or dental assistant. a true b false b ________ 2 Annual tests for dental x-ray machines can be performed by a dentist, dental hygienist, or dental assistant. a true b false 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 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 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 a ________ 6 When functioning properly, a viewbox should emit a uniform and brilliant light. a true b false 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-