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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
a radiograph that has is said to have low contrast.
many shades of gray
types of radiation interaction with patients include:
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:
- bone levels
WIth size 2 film, a total of anterior film placement are used with the paralleling technique.
is an image recptor found in the introral sensor.
charge-coupled device- COD
Implants will appear on radiographs.
Which PIDs doesnt produce scatter radiation?
after the lead apron is used, it should be:
- 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
A. is always round
B. restricts the size and shape of the x-ray beam
C. is a solid piece of aluminum
D. is fitted whithin the copper stem beneath the molybdenum cup
On intraoral radiographs, when the patients right is on your right, this is called _ mounting.
Failure to add replenisher as needed each day to an automatic processor will result in:
A. overexposed film
B. poor-quality films
C. underexposed film
D. clear film
A forom of enhancement of the digital image that is available for use is:
B. digital subtraction
C. digital scanning
D. storage phosphor image
If the lead apron is folded after being used, it will _ and _.
A. shred, mold
B. crack, become ineffective
C. gradually fall appart, become powdery
D. crack, remain effective
WHat size film is used with the posterior XCP instrument?
A tissue that lies within the primary dental beam and receives a lot of secondary radiation is the _.
which is NOT information found in the film mount?
A. name of radiographer
B. date of processing
C. patients full name
D. dentist name
what should dental personnel wear to protect themselves form exposure to occupational radiation?
A. film badge
B. film screen
C. tape recorder
D. metal detector
_ can be used in cassettes.
Root fractures occur most often in the _ region.
A. maxillary central incisors
B. mandibular central incisors
C. maxillary molars
D. mandibular molars
All of the following are advantages of digital radiography except _.
A. digital subtraction
B. the ability to enhance the image
C. size of the intraoral sensor
D. patient education