Study Guide Week 2 Flashcards
What is the minimum distance the safe light needs to be when processing x-rays?
a. 10 centimeters
b. 3.4 mm
c. 4 feet
d. 5 feet
c. 4 feet
Which film processing solution has a pH level above 7 and chemically reduces the exposed area of the emulsions making it visible to the naked eye?
a. water
b. developer
c. x-radiation
d. fixer
b. developer
________ are flat, hard containers used to hold the film during exposure.
cassettes
A _________ is a lighted box that has white frosted surface so that x-rays can be viewed easily for diagnostic purposes.
view box
_________ radiographs are used to assess the patient’s skeletal structure and profile. The patient’s bony structure and soft tissues are recorded.
Cephalometric
A number of radiographs that collectively display all the teeth and surrounding structures are called a _____________.
full mouth survey
The need for radiographs to be ___________ is increasing because more patients request radiographs be sent to specialists, patients are moving to new area and there is an increase in malpractice suits.
duplicated
The 14 or 16 window mounts are used most commonly for ________ mounts.
periapical
__________ is when a film has been exposed to high temperature. The film emulsion swells, then shrinks and has tiny cracks.
Reticulation
Normally, when facing the processing tank, the developer solution is on the _____ side of the processing tank.
left
With ____________________, a series of rollers move the x-ray film through the developing compartment, and then deposits it into a tray.
automatic processing
The x-ray machines must be checked for _______ and should not be used until problem is addressed.
leakage
________________ involves following policies and procedures that will reduce the chance of a malpractice lawsuit against the dentist.
Risk management
One structure lying over another is called ___________.
superimposition
___________ are used first thing in the morning and the afternoon to stir the developer and fixer.
Stirring rods
The _________ mounting is where the depressed dot is away from the operator and the patient’s left side is on the operator’s
lingual
In order for the dental assistant to maintain infection control during the radiography procedure, any areas that were not covered with a barrier must be ____________.
disinfected
__________ radiographs are used to detect caries, bone level, and calculus. These radiographs may also examine the crestal area of the alveolar bone.
Bitewing
In the _________ technique, the central ray is directed at the imaginary line that divides the angle created by the length of the tooth and the film packet.
bisecting
__________ radiographs are used by the dentist to identify large area of the skull on one radiograph.
Extraoral
List the tissue or organ (from least sensitive to greatest sensitivity to radiation).
a. Kidney
b. Connective tissue
c. Liver
d. bone marrow
e. intestinal tract
- Kidney (least sensitive)
- Liver
- Connective tissue
- intestinal tract
- Bone marrow (greatest sensitivity)
HOW it might show up on test:
1. Kidney
5. bone marrow (greatest sensitivity)
4. intestinal tract
3. Connective tissue
2. Liver
When manually processing x-rays in the dark room, what are the sequence of solutions?
Put these in correct order: dry, wash, rinse, development, fix, rinse
- development
- rinse
- fix
- rinse
- wash
- dry
What is the name of the intraoral radiograph that shows the entire tooth and surrounding area?
periapical (PAs)
What type of intra radiograph shows the crowns, interproximal spaces, and the crest area of the alveolar bone of the maxillary and mandibular teeth in occlusion?
bitewing
What are the sizes of intraoral film?
0, 1, 2, 3, 4
When processing films in an automatic processor, what is the sequence of the solutions?
Put these in correct order: fix, develop, dry, wash
- develop
- fix
- wash/dry
On the dental film, what does the size of the silver halide crystals and bromine crystals in the emulsion regulate?
speed of film
What is the small room called where x-ray film can be developed, fixed, and washed? This room must be light tight:
darkroom
Which intraoral radiograph exposes the large anterior/arch areas of the mandible or maxilla surfaces of the dental arch?
occlusal film (or size 4)
True or False:
For the bisecting technique, the film must be placed in the patient’s mouth as close to the lingual surface of the tooth as possible without bending the film.
True
True or False:
The smaller the crystals in the emulsions, the faster the dental x-ray film.
False
True or False:
Dental assistants in each state should inquire about the regulations on the length of time patient radiographs must be saved.
True
True or False:
Many dental offices store dental film in the fridge.
True
True or False:
The latent image of the film becomes visible when it has been exposed to chemicals for a period of time and at a certain temperature.
True
True or False:
The developing solution used for automatic processing can also be used for manual processing.
False
True or False:
The stirring rods should be marked according to the processing solution in which it will be used. The rods should not be used interchangeably.
True
True or False:
If the film has not been exposed to light or radiation, it appears clear after processing.
True
True or False:
During a bite-wing radiograph, when a dentist wants to see more of the tooth root and alveolar bone, the fill is placed horizontally.
False
True or False:
Bitewing radiographs are usually taken on the anterior teeth.
False
True or False:
If a film has been totally exposed to visible light, it appears black after processing.
True
True or False:
The halide crystals that make up the emulsion for the dental x-ray film has compounds of halogen like chlorine, bromine, and iodine that combine with another element such as silver.
True
True or False:
Disposal of the fixer solutions must follow OSHA hazardous waste guidelines.
True
True or False:
Dental x-ray film should be stored carefully before it is used because it is sensitive to stray radiation, high temperatures, and chemicals.
True
True or False:
Radiographs are the property of the patient considering the patient’s insurance company paid for them.
False
What is the minimum distance an operator should stand during an x-ray exposure?
6 feet
What is the best way for a dental assistant to evaluate the amount of radiation he/she/they receives?
To wear a film badge everywhere, at all times.
Cells with a high reproductive rate are considered to be?
radiosensitive
Film with grey appearance with an image detail that is lost and lessened contrast is considered to be:
fogged
Normally automatic processing is done at temperatures between what degrees? __ & __ degrees.
82 & 95 degrees.
Which solution removes the unexposed and underdeveloped crystals from the film emulsion as well as stops the developing process?
Fixer
What size film is used for an adult with a narrow palette on the anterior teeth?
size 1
What type of x-ray is commonly used on an adult anterior and posterior?
size 2
