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20 Cards in this Set
- Front
- Back
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ALARA
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As low as reasonably achievable- a policy of using lowest amount of raiation exposure possible
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Ala- Tragus
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Imaginary line from the ala(wing) of the nose (skin projection at the ear) center of the ear.
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Bisecting angle technique
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Is where the central beam is directly perpendicular with imaginary line of the angle formed by the plane of the film and long axis of the tooth.
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Central ray
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the useful beam
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Periapical film packet
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used for the intraoral view of the entire tooth and surrounding structures
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Bitewing film packet
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records crown and interproximal views of both arches while in occlusion
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Occlusal film packet
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this film may be used intraorally to expose large areas; size 4 film
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Extraoral film
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radiographs exposed outside the oral cavity
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Cephalometric
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Extraoral radiograph of the head used in orthodontics
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Panoramic
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Extraoral radiograph producing entire dentition with surrounding structures on one film
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Intensifying screen
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layer of fluorescent crystals within a cassette which give off a bluish light which helps form latent image on the film faster with less exposure
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Latent image
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the invisible image produced on radiographic film by the action of light or radiation before development
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Vertical angulation
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direction of the central beam is placed in an up or down position
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Zero angulation
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Angulation achieved by positioning the PID parallel with the floor
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PID
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Position indicating device-is used to collimate and direct the central beam and determines the target distance
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target distance
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distance between the film and source of radiation
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Bite Block
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device that is inserted between teeth to hold film during exposure
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XCP
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extension cone paralleling device-used with a locator or aiming ring, indicator rod and assorted blocks
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Developing
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Chemical process used to produce the latent image on a radiographic film
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Fixing
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Chemical process which stops developer action and makes image permanently visible
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