Dental Radiology Practice Exam with Complete Solutions
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Course
Dental Radiology
Institution
Dental Radiology
Dental Radiology Practice Exam with Complete Solutions
When using film holding devices you are primarily exposing radiographs with which technique? - Answer-The Paralleling technique, (long cone)
When used correctly, a rectangular collimating device will reduce? - Answer-Unnecessary Radiation
...
Dental Radiology Practice Exam
with Complete Solutions
When using film holding devices you are primarily exposing radiographs with which
technique? - Answer-The Paralleling technique, (long cone)
When used correctly, a rectangular collimating device will reduce? - Answer-
Unnecessary Radiation
When exposing an intraoral radiograph gagging is most likely to occur during which
projection? - Answer-Maxillary Molar
Compared to the bisecting angle technique ( short cone), the paralleling technique (
long cone) of exposing radiographs produces an image with? - Answer-Decreased
distorition
Which type of radiograph would most likely detect interproximal caries (decay) on a
mandibular molar? - Answer-Molar bitewing radiograph
Which radiograph is the nasal fossa observed? - Answer-Maxillary Incisor
The Paralleling technique of radiographic exposure generally requires distance from the
source of radiation to the film of? - Answer-16 inches
The lingual Foramen and genial tubercle should be able to be observed in which of the
following radiographs? - Answer-Mandibular central inciser
What size film is generally used in cephalo-metric radiography? - Answer-8 x 10
In which radiograph is the coronoid process sometimes observed? - Answer-Maxillary
Molar PA
If the film is not parallel with the tooth and source of radiation, what will occur? -
Answer-increase in distortion
Which of the following is a Disadvantage if panoramic radiographs? - Answer-Lack of
detail on the periodontium
Standard film size for Pediatric Radiograph? - Answer-Size 0
, Standard film size for Narrow Oral Cavity - Answer-Size 1
Standard film size for average oral cavity? - Answer-Size 2
Standard film size for long bitewing? - Answer-Size 3
Standard film size for Occulsal? - Answer-Size 4
The Distal surface of the canine should be able to be observed in which radiographs -
Answer-Premolar PA, Premolar Bitewing
When placing an intraoral radiographic film the incidence of gagging may be reduced
by? - Answer-Accurate film placement, instructing the patient to breathe deeply, the use
of mouth rinses, the use of film holding devices.
What the principal of ideal projection> - Answer-The tooth and film should be parallel to
each other and the source-object distance should be as long as possible
What causes film to be white? - Answer-Film packet reversal
If film is left in the developer too long during processing (i.e 30 min) it will be - Answer-
Too dark
If a film is exposed to a safelight for too long, the resultant radiograph will be? - Answer-
Fogged
If the temp of the developer is too low and the developing time is not adjusted , the
processed film will be? - Answer-too light
Placing exposed radiographic film in fixer before developer results in a - Answer-Clear
film
Dark and black radiographs can be caused by? - Answer-Overexposure, and
overdevelopment
What cause pano to be dark? - Answer-Jewelary
Normally how many bitewings are exposed on an endentulous patient? - Answer-Zero
An aid to correctly mounting processed radiographs is the? - Answer-Raised bump on
the film
The emulsion side of duolicating film may be identified because compared to the non-
emulsion side it is? - Answer-Lighter and Dull
in X-radiation, ionization occurs when? - Answer-Photons penetrate matter
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