the concept that the dental practitioner should expose the patient to the least amount of radiation exposure within the dental office without excessive cost refers to the
ALARA
a radiograph that has is said to have low contrast.
many shades of gray
types of radiation interaction with patients include:
primary
secondary
scatter
which of the following is abeam alignment device?
precision film holder
when the voltage is increased:
electrons move from the cathode to the anode with greater speed
the method of obtaining digital image similar to scanning a photograph to a computer screen is termed
inderect digital imaging
fractures of the madible will appear:
as a radiolucent line
Taking the film to be duplicated out of the mounts:
improves the detail of the duplicate
rules of radiation protection for the operator include:
never stand in direct line of primary beam
always stand behind a lead barrier or a proper thickness of drywall
monitor radiation exposure
Bitewing projections can be used to detect:
caries
bone levels
restorations
WIth size 2 film, a total of anterior film placement are used with the paralleling technique.
six
is an image recptor found in the introral sensor.
charge-coupled device- COD
Implants will appear on radiographs.
radiopaque
Which PIDs doesnt produce scatter radiation?
rectangular
round
after the lead apron is used, it should be:
disinfected
hung up or laid on a rounded bar
To help reduce the gag reflex:
try to reduce tactile stimuli
In dental practice where many HIV-positive patients are treated, the film rollers in the automatic processor should be:
treated in the usual accepted manner
The collimator:
C.
On intraoral radiographs, when the patients right is on your right, this is called _ mounting.
A.
Failure to add replenisher as needed each day to an automatic processor will result in:
A.
A forom of enhancement of the digital image that is available for use is:
D.
If the lead apron is folded after being used, it will _ and _.
A.
WHat size film is used with the posterior XCP instrument?
2
A tissue that lies within the primary dental beam and receives a lot of secondary radiation is the _.
B.
which is NOT information found in the film mount?
D.
what should dental personnel wear to protect themselves form exposure to occupational radiation?
B.
_ can be used in cassettes.
B.
Root fractures occur most often in the _ region.
B.
All of the following are advantages of digital radiography except _.