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RADIATION HEALTH AND SAFETY - TEST 1 QUESTIONS AND ANSWERS
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RADIATION HEALTH AND SAFETY - TEST 1 QUESTIONS AND ANSWERS
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RADIATION HEALTH AND SAFETY -TEST 1 QUESTIONS AND ANSWERS
What is a true statement regarding pregnant patients and exposure to radiation? -
Answer-Lead aprons prevent exposure to the fetus
Divergence of the x-ray beam is reduced using: - Answer-The paralleling technique
The maximum permissible dose (MPD) for occupationally exposed workers is: -
Answer-0.05 Sv/yr
What represents the optimum desired occupational dose? - Answer-0 rem/yr
What would be an acceptable practice for an operator of dental x-ray equipment? -
Answer-Wearing a film badge only at work
What does a film badge monitor? - Answer-Radiographer's daily occupational radiation
exposures
What is an acceptable emission from the tubehead? - Answer-Primary radiation
What is an accurate statement about safe operating procedures? - Answer-All dental
staff members should wear dosimeters
You have a new dental x-ray machine. The length of the PID is changing form 16 to 8
inches. How does this affect the intensity of the x-ray beam? What adjustment will you
need to make to keep the dentistry of your images consistent? - Answer-The resultant
beam will be four times as intense. You will need to decrease the exposure.
Which type of beam does not produce scatter radiation? - Answer-Both rectangular and
round
When using a stepwedge to test developer strength, a total of _________ films should
be taken. - Answer-20
A reference radiograph is used to compare: - Answer-Densities
A coin test is used to check for: - Answer-Proper safelighting
Extraoral intensifying screens should be checked periodically for: - Answer-Dirt and
scratches
When densities differ by more than two steps on a stepwedge, which protocol should be
followed? - Answer-Replace the processing solutions
, On average, processing solution should be changed: - Answer-Every 3-4 weeks
Which is required fro film duplication? - Answer-Duplication film
This radiograph is mounted labially. What is the radiopaque restoration on tooth #19 in
this image? - Answer-An amalgam restoration with an overhang on the mesial surface
What process is occurring in this image? - Answer-Physiologic resorption
Which structure appears in this panoramic image? - Answer-Metal framework for two
partial dentures
What landmark is indicated by the arrow? - Answer-Coronoid process
Which exposure error results in the "herringbone effect"? - Answer-Film reversal
How does the median palatine suture appear in a dental image? - Answer-Thin
radiolucent vertical line between teeth #8 and #9
Which regression alteration of tooth structure appears radiolucent and occurs within the
crown or roots of a tooth? - Answer-Internal resorption
Which structure would not be seen as a maxillary landmark on a panoramic image? -
Answer-External auditory meatus
Why would a developed film be clear? - Answer-Failure to turn on the x-ray machine
How does static electricity appear on a developed film? - Answer-Black branching lines
If the radiographic processing time is too short, how will the film appear? - Answer-Light
Which type of materials can irritate the skin, eyes or lungs and can cause illness or
death? - Answer-Toxic
Failure to obtain informed consent is an example of: - Answer-Negligence
The dental record is a legal document. What method can be used to record patients
information in the patient chart? - Answer-Data recorded on a computer
Who determines the hazards of a chemical? - Answer-OSHA
The use of chemical-resistant gloves is an example of: - Answer-Engineering and work
practice controls
Safety Data Sheets (SDS) have _______ sections? - Answer-16
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