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dental film and processing radiographs
device that automates all film processing steps | automatic processor |
assists in the positioning of the position indicator device ( PID ) | beam alignment device |
radiographic view that shows the crown of both arches on one film | bitewing |
common type of phosphor | calcium tunstate |
holder for extraoral films during exposure | cassette |
shows the bony and soft tissue areas of the facial profile | cephalometric film |
film designed for use in film duplicating machines | duplicating film |
a coating on the x-ray film that contains energy sensitive crystals | emulsion |
film designed for use in cassettes | extraoral film |
device used to position and hold dental x-ray films | film holder |
the sensitivity of teh emulsion on the film to radiation | film speed |
device used to covert x-ray energy into visible light, which in turn exposes screen film | intensifying screen |
film designed for placement in the patients mouth | intraoral film |
colored side of the film that faces the tongue | label side |
the invisible image on the x-ray film after exposure but before processing | latent image |
radiographic view that shows large areas of the maxilla or mandible | occlusal |
provides a wide view of the upper and lower jaws | panoramic film |
radiographic view that shows the crown | periapical |
a series of steps that change exposed film into a radiograph. The steps include developing, rinsing, fixing, washing and drying | processing |
image produced on photosensitive film by exposing the film to radiation then processing it | radiograph |
solid white side of the film that faces the x-ray tube | tube side |
EeZee-Grip was formerly called the ______. | Snap-A-Ray |
The emulsion on the intaoral film consist of three things. | Silver bromide, silver, halide, and silver iodide. |
The film speed is classified by what organization? | American National Standards Institute. (ANSI) |
What is the fastest speed available? | F speed |
What are the three types of x-ray film that are used in dental radiography? | Intraoral, extaoral, and duplicating. |
The small raised bump on the film packet is known as __________. | The identification dot. |
The thin lead foil sheet is positioned ______ the film. | behind |
What happens if you place the film packet in the mouth backwards? | a herringbone pattern will be visible on the radiograph. |
The lead foil is considered a _________and may not be disposed of with the regular trash. | Hazardous waste |
The raised dot points towards what surface of the tooth. | Incisal/occlusal |
What type of film is used to examine large areas of the head or jaws? | Extraoral film. |
What are two common extraoral films? | panoramic and cephalometric |
The back side of the cassette is made of metal to ___________. | reduce scatter radiation. |
The intensifying screen is coated with what material? | phosphor |
What type of film is used with cassettes that have calcium tungstate intensifying screens? | Blue sensitive |
Duplicating film is used only in a _______ setting. | darkroom |
The effect that happens if you use film that is outdated. | Age fog |
What is the first step in film processing? | Developer |
What happens if the the film is left in the fixer for long periods of time? | removes the image from the film |
What happens if the film is not properly fixed? | The film will fade and turn brown. |
What are three forms of processing solution? | powder, ready to use liquid, and liquid concentrate. |
How often should the chemicals in the processor be replaced? | Every 3 to 4 weeks |
What is a safelight? | low-intensity light in the red-orange spectrum. |
How far away from film and work area must a safelight be placed? | at least 4 feet |
Processing solution in the automatic processor should be replaced every _______. | 2-6 weeks |
Overdeveloped film will appear _____. | Dark |
A white line on the film will indicate the film has been ______ before developing. | scratched |
When placing the dental film packet the white side of the film?
The tube side is solid white and has the raised bump on one corner. When placed in the mouth, the white side (tube side) of the film must face the teeth and tubehead, and the raised dot must be toward the incisal/occlusal surface.
Which side of the film faces towards the tube?
The manufacturer orients the film in the packet so that the convex side of the dot is toward the front of the packet and faces the x-ray tube. The side of the film with the depression is thus oriented toward the patient's tongue.
Which side of the film must be turned toward the Tubehead?
When placing the film in the mouth how should it be placed? The white side (tube side) of the film faces toward the teeth and tubehead, and the raised dot points toward the incisal/occlusal surface.
How is dental film packaged?
In dentistry, the terms 'film packet' and 'film' are often used interchangeably. Intraoral film packets are typically available in quantities of 25, 100 or 150 films per container. Film packets are packaged in convenient plastic trays or cardboard boxes that can be recycled.