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48 Cards in this Set
- Front
- Back
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What is the film base used for? |
to provide support for the fragile emulsion and to provide strength for handling |
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What does the blue tint inhance |
Contrast and image quality |
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The base is covered with a what on both sides |
Photographic Emulsion |
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What is each emulsion layer attached to the base with? |
A thin layer of adhesive |
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What is Emulsion composed of? |
Gelatin in which crystals of silver halide salts are suspended |
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What is the function of the Gelatin |
to keep the silver halide crystals suspended over the base |
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What is it in the film that when exposed to x-rays retain the latent image |
The silver halide crystals |
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What is the protective covering |
supercoating of gelatin to protect the emulsion |
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Two types of film what are there names |
Intraoral extraoral |
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What does the film packet consist of for the Intraoral films? |
Film Black Paper wrapping Lead foil Moisture resistant outer wrapping |
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What is the lead foil used for? |
To shield the film from back scattering radiation |
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What is the identification dot used for? |
determine film orientation and right and left side
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Black paper wrapping protects the packet from what? |
Light |
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The Lead foil is located where in the packet? |
Behind the film |
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Moisture resistant outer wrapping is used for what? |
protect the film from light and moisture |
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What way does the Tube side face? |
the source of radiation |
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What color is the Tube side and what does it have on it? |
Solid white Embossed dot |
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Back side of the film packet is what color and contains what on it? |
white or may be color coded and the information of the film is located on this side |
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What information does the back side of the film packet have on it/ |
Manufacturers name Film Speed Number of films Circle or mark indicating the location of the identifying dot The statement "opposite side toward tube" |
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Film Emulsion Speed refers to what? |
amount of radiation required to produce radiograph acceptable density
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The faster the film speed the less radiation required TRUE or FALSE |
TRUE |
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Small or large silver halide crystals make the film faster |
Large |
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Thick or thin Emulsion layer makes the film faster |
Thicker |
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What are the 3 things that help increase the film speed? |
Thick emulsion layer Large silver halide crystals Special radiosenstive dyes |
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Which of the 3 is the most important in increasing the film speed? |
Large Silver Halide Crystals in the emulsion |
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How many sizes of film are there and what are there names
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5: 0 1 2 3 4 |
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The larger the number the larger the film TRUE or FALSE |
TRUE |
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Size 0 is used for |
Small Children (PEDO size) |
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Size 1 is used for |
Also for children Adults for anterior teeth |
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Size 2 is used for |
Used for larger children and Adults For PA's |
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How often is the size 2 film used? |
75% of the time of all intraoral radiography |
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Size 3 is used for? |
Long bitewing ( with a preattached bite tab) |
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Size 4 film is used for? |
Occlusal films and largest of films |
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Which size of film is known to be the standard film for Pa's |
Size 2 |
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What are the three types of projections? |
Bitewings PA's Occlusal |
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What films can be used for pa's |
0, 1, and 2 |
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Size 4 film are ideal for |
Maxilla Mandible and floor of the mouth |
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Extraoral film is designed for what use |
Outside the mouth |
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What are extraoral films classified as? |
Screen film |
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An image produced on an extraoral film results from exposure to this fluorescent light instead of directly from the x-rays
TRUE or FALSE |
TRUE |
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What does extraoral films consist of? |
Protective paper Protective Foil
Films are Sandwiched between two pieces of protective paper and the entire group is wrapped in protective foil |
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what are the different sizes of extraoral films (3) |
5 X7 8X10 5 or 6 in x 12 |
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What are the 5X7's used for |
Lateral views of the jaw or TMJ |
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8X10's are used for what? |
cephalometric profiles and posteroanterior views of the skull |
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5 or 6inx 12 are used for? |
Panoramic radiographs |
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What is duplicating film exposed by? |
Infrared and Ultraviolet |
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Where should Intraoral films be stored at for heat and humidity |
Stored at 50 to 70 degrees F 30 to 50% humidity |
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Should films be stored in a dark room? |
No |
