chapter 39
10.Which of the following time and temperature errors will result in reticulation of the film emulsion?
Sudden temperature change between developer and water bath
1. Dental film holders, used to position and hold the dental x-ray films in the patient's mouth, include which of the following?
XCP and disposable block c. Eezee-Grip and EndoRay
Transporting PSP films should be done by placing them in:
a black transfer box.
A film placed in the mouth with the tab side toward the teeth will show
a herringbone effect
Sterilized positioning instruments should be removed from the packages
after the patient is seated.
Over-fixation causes
bleaching of the radiograph to a thin, shiny or clear image
If a film is not fixed long enough, it will be
brownish
2.The radiographic image is located within the _____ of the radiographic film.
gelatin that suspends the emulsion
Once films are removed from the mouth, they are considered contaminated and should be
handled only with gloved hands.
In digital radiography, when using storage phosphor plates:
images have to be transferred to a scanner
When a film shows brown spots it is because
improper fixing time
7.A(n) _____ is a device that intensifies or increases the effect of the radiation and decreases the amount of exposure time needed when exposing an extraoral radiograph.
intensifying screen
Exhausted developer will produce a
thin, faded image
The safelight in the darkroom can be tested by:
using the coin test.
18. Assists the positioning of the position indicator device (PID)
Beam alignment device
9. Common type of phosphor.
Calcium Tungstate
3.____ -speed film is the newest and fastest film currently available.
D
13.Which category of digital imaging is similar to faxes and video equipment, which use a sensor with a cord that is attached to the computer?
Direct digital radiography
12. Film designed for use in cassettes.
Extraoral film
What is the cause of white spots on a processed film?
Fixer contacts film prior to processing
8._____ hardens the film emulsion during film processing.
Fixing
Who can be held legally responsible for dental assistant's actions?
Both the dentist and assistant
19. Contains extraoral films during exposure.
Cassette
4. Shows the bony and soft tissue areas of the facial profile.
Cephalometric film
Which of the following statements is true regarding federal and state regulations on the use of dental x-ray equipment?
Most states have laws that require inspections of dental x-ray equipment on a regular basis.
Which of the following will affect the life of the processing solutions?
Number of films processed Time elapsed since last change Size of films processed
The _______ is the safest place to store unopened boxes of dental film.
darkroom
It is the responsibility of the ____ to discuss the need for dental imaging.
dentist
Dental images are the property of the
dentist.
The process of informing the patient about the nature and purpose of dental imaging is termed:
disclosure.
6.A film cassette made of plastic or metal is used to hold and protect the extraoral film. During exposure, the _____ side of the cassette must always face the patient.
front
9.Automatic film processing requires _____ than manual film processing.
less equipment
Solutions should have been changed in the processor one week ago. Continuing to use exhausted developer will result in ____ films.
light
Underdeveloping can cause the film to be
light
Underexposure of radiographs is suspected when the X-ray is
light
The most critical component in film processing quality control is:
maintaining the freshness of the processing solutions.
Extraoral film is:
more sensitive to light than intraoral film.
Dental records must contain documentation of the ______ of dental images taken.
number type quality
During normal exposure the occlusal plane of the teeth should be _____ to the floor
parallel
2. Radiographic view that shows the crown, root tip, and surrounding structures.
periapical
The Consumer-Patient Radiation Health and Safety Act is a federal law that requires all:
persons who use x-rays to take dental images to be properly trained. persons who use x-rays to take dental images to be certified.
When loading the film into the cassette before exposure (in extraoral radiography), the:
procedure must be done in the darkroom.
The purpose of the lead foil in the dental film packet is to:
reduce film fogging.
In the use of extra-oral film, intensifying screens are used to
reduce the exposure time
Developer strength can be checked by using a:
reference image. stepwedge image.
According to the Centers for Disease Control (CDC) Guidelines for Infection Control in Dental Healthcare Settings—2003, digital radiography sensors:
should use FDA-cleared barriers.
Air bubbles clinging to the surface of the film in the developer
shows up as white blotches
12.The CCD found in direct digital imaging sensors is made of:
silicon.
When placing a dental film in the patient's mouth, the white side is placed ____ the tube and the raised dot to the ____.
toward; occlusal or incisal
The daily radiograph is lighter than the reference radiograph. This indicates the developer is too:
weak.
14. Image view that shows the crowns of both arches on one film.
Bitewing
20. Radio graphic view that shows large areas of the maxilla or mandible.
Occlusal
During processing: each successive panoramic radiograph appears lighter than the one before. Which of the following corrections should be made?
replenish the developer solution
Digital radiography requires less radiation than traditional radiography because the
sensor is more sensitive to x-ray energy.
11.Developer cutoff will result in a _____ border.
straight white
A radiograph with a thin image is difficult to interpret and may be caused by
the developing solution being too cold
8. A coating on the X-ray film that contains energy-sensitive crystals.
Emulsion
4.The most commonly used film size for adult intraoral dentistry is size:
#2.
The recommended distance between the safelight and where the films are unwrapped is:
4 feet.
The ideal time and temperature for manual developing is:
5 minutes at 68° F.
The ideal temperature of solutions used in manual processing dental radiographs is
68-72 degrees
In the automatic processor, the developing solution is normally 81° F to 83° F. If it gets hotter, how will the films look?
Dark or black
Who is responsible for overall quality assurance in a dental practice?
Dentist
Which is the correct order of steps in manual film processing?
Develop, rinse, fix, wash
What should the dental assistant do if a patient refuses dental imaging?
Document in the patient's record the fact that he or she refused recommended dental imaging. Explain to the patient the importance of dental imaging.
10. The part inside an extraoral cassette that converts X-ray energy into visible light, which in turn exposes screen film.
Intensifying Screen
3. Film designed for placement in the patients mouth.
Intraoral film
Which is not true of duplicating film's emulsion?
It appears dull.
Which is not true of digitizing film-based radiographs?
It duplicates the same detail as the original film.
16. Colored side of the film that faces the tongue.
Label side
1. The invisible image on the X-ray film exposure but before processing.
Latent Image
5.Which of the following is an extraoral film that is placed outside the mouth during x-ray exposure?
Panoramic
6. Used in cassettes to provide a wide view of both the upper and lower jaws.
Panoramic film
11. Reusable film-sized plates coated with phosphor as the image receptor.
Phosphor storage plates
15. Intraoral device used to position and hold the film, sensor, or PSP.
Positioning Instrument
17. A series of steps that change exposed film into a radiograph. Steps include developing, rinsing, fixing, washing, and drying.
Processing
Which of the following must be disclosed to the patient before obtaining informed consent?
Risks and benefits of the images Person who will be exposing Consequences of not having images
5. Process of using electronic transfer of images and other information for consultation and/or insurance purposes in dentistry.
Teledentistry
The film is lighter than normal; what is the probable cause?
The developer solution is too weak.
Which is not true of storage plates used with (PSP)?
They are disposable.
Which is not true of image plates?
They should be autoclaved.
13. Solid white side of the film packet that faces the X-ray tube.
Tube side
Quality assurance is a way of ensuring that everything possible is being done to produce high-quality diagnostic images and includes quality:
administration procedures. control tests.
7. A solid-state image sensor used in intraoral digital imaging.
Charge- coupled device
Positioning instruments in digital radiography:
both a and b.
What effect will improper rinsing have on X-rays?
brown spots on the film
Film speed is determined by the:
c. size of the silver bromide crystals.
According to the test for x-ray film freshness, if the processed film appears _____, the film is fresh and has been properly stored and handled.
clean with a slight blue tint
The gallon of fixer is mistaken for developer, and developer is mistakenly thought to be fixer. As a result, films pass through the fixer first, then the developer. Each film will now be:
clear.
A ______image is produced when x-rays interact with the film emulsion.
latent
