Film video notes Flashcards
What is the purpose of this presentation?
To educate Dental Assisting students about dental film
What types of film sizes are assigned numbers?
1, 2, 3, 4, panoramic film size, cephalometric film size
Which film size is primarily used for bitewing and periapical images?
Number 2 film
What age range can a number 2 film be used for in pediatric dentistry?
8 to 12 years old
What is the size of a number 3 film?
Rectangular, used as a bitewing film
What does a number 4 film allow us to image?
Entire maxillary or mandibular dental arch
What is the typical size of a cephalometric film?
8x10 inches
What is the recommended film size for anterior images?
Number 1 film
What is the significance of film packaging information for dental assistants?
To order and purchase the correct dental film
What does the film code IP-01 indicate?
Size 0 film with one film in the packet
What is film speed?
Amount of radiation required to expose a film
Which letters commonly represent film speed?
D, E, F
What organization oversees the standards for film speed?
American National Standard Institute (ANSI)
How does higher film speed affect radiation exposure?
Less radiation is needed to produce an image
What are the two types of film packets mentioned?
Poly packets and paper packets
What is a moisture-resistant outer wrapping used for?
To prevent saliva contamination of the film
What is the purpose of the black paper in a film packet?
To prevent light exposure to the film
What does the lead foil in a film packet do?
Prevents x-rays from penetrating the back of the packet
What is the composition of dental film made up of?
Layers including film base, emulsion, and protective layer
What should be checked on film packaging before use?
Expiration date
True or False: Expired film can provide clear images.
False
Fill in the blank: The film speed is represented by a _______.
[letter designation]
What is the recommended practice regarding ordering film?
Order fresh film with high speed
What is a common saying for dental assistants regarding film placement?
‘Plain to the PID’
What is the film base made of?
A flexible piece of polyester plastic
The film base can be green or blue in color and somewhat transparent.
What is the purpose of the adhesive in film?
Allows the emulsion to attach to the base
The adhesive helps the emulsion stick to the film base.
What is the emulsion in film composed of?
Gelatin and silver halide crystals
Gelatin holds the silver halide crystals, which absorb radiation.
What chemicals are found in silver halide crystals?
Bromine and iodine
These chemicals store the energy of x-ray or ionizing radiation.
What is a latent image?
An image not visible immediately after exposure
It is formed by the absorption of radiation by the emulsion.
What does the protective coating on film do?
Prevents scratches on chemical layers
This coating helps maintain the integrity of the film.
True or False: Film can be exposed to light after being used.
False
Exposure to light will ruin the image, resulting in a black film.
How should film be handled to avoid damage?
By holding it by the edges
Touching the film surface can lead to fingerprints and smudges.
What environmental conditions should film be stored in?
Room temperature and low humidity
Film should not be exposed to chemicals or radiation sources.
What can affect the effectiveness of film?
Temperature, humidity, and exposure to chemicals
Proper storage conditions are crucial for maintaining film quality.
What happens if film is not processed correctly?
It may show staining or poor quality
Colors like green, yellow, or brown can appear on the film.
What is a daylight loader?
A mini darkroom for automatic processors
It allows film processing without a traditional darkroom setup.
How should used film packets be disposed of?
According to local regulations
Some components, like lead foil, require special disposal while others can be recycled.
What should you check before disposing of film packets?
Regulations in your city, county, or state
Different areas have specific rules regarding the disposal of film materials.
