RHS Flash Cards
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| Unexposed Film Appearance | clear film with a bluish tinge
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| Film Exposed to White Light Appearance | film appears black
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| Over Exposed Film Appearance | film appears dark
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| Under Exposed Film | film appears light
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| Premolar Bite-Wing must include... | Distal 1/2 canine, all premolars present & 1st molars of the and MD teeth, & crestal bone
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| incorrect Horizontal Angulation Appearance | overlapped contact areas appear on the film
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| cone-cut Appearance | a clear, unexposed area on the film
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| Film Bending Appearance | film appears stretched & distorted
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| Film Creasing Appearance | a thin radiolucent line appears on the film
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| Phalangioma Appearance | patients finger appears on the film
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| Double Exposure Appearance | two images are superimpose on top of each other
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| Patient movement Appearance | film image is distorted or blurred
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| Incorrect Vertical Angulation Appearance | short teeth with blunted roots appear on the film
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| Dropped Film Corner Appearance | the occlusal plane appears tipped or tilted
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| Incorrect Film Placement Appearance | no apices on the film
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| Molar Bite-Wing must include... | Distal 1/2 of second premolar, all molars present & both MX & MD molars & crestal bone
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| Reversed Film Appearance | light images with a herringbone pattern appear on the film
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| X-ray Machine Purpose | produce quality radiographs and detection of disease & lesions for diagnostic purposes
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| Federal Regulations | 1968 Radiation Control for Health & safety Act: Standardize performance of x-ray equipment
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| Federal Regulations | 1874 US FDA standardized all manufacturing of radiographic dental equipment
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| State Gov't Regulations determine when & how dental x-ray equipment is monitored | mandatory every 2 years
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| Tube head or tube housing used to... | produce x-rays
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| Extension arm used to | suspend tube head, house electrical wires & allows movement in all directions & positioning of x-ray tube head
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| Control panel used to... | allows fro regulation x-ray beam, control electrical current for generations of X-rays, & house control buttons and settings
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| kVp | 65-100 kVp range - peek of energy
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| mA | 7-15 range- amount
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| Exposure time | 1/60th of second - standard & 1/100th of a second - digital
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| Collimator | lead diaphragm used to restrict the size of the x-ray beam (round, rectangular, cone)
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| X-ray film holders | stable (styrofoam bite block, simplest) XCP, Bite tab, EEZE grip, etc.
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| Beam Alignment Device | used to help the radiographer position the PID in relationship to the tooth and film
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| X-ray | beam of energy
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| Image | picture or likeness of an object
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| Receptor | something that responds to a stimulus
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| Film Composition | film base, adhesive layer, film emulsion, protection layer,
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| Film emulsion purpose & mixture | to give film greater sensitivity to x-radiation, homogeneous mixture of gelatin and silver halite crystals
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| Latent Image | stored image not visible in film
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| Purpose of Lead Foil Sheet | to prevent film fogging from scatter radiation
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| Periapical | examines the entire tooth and surrounding structure
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| Bitewing | examines the inter proximal surfaces of the crowns of both MX & MD teeth with cresal bone
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| occluscal | examines large area of MX or MD jaw
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| Types of Intra-Oral radiographic examination | periapical, interproximal, occlusal
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| Periapical | used to examine the entire tooth and supporting bone, periapical film paralleling and bisecting technique
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| Interproximal | examine the crown of both the mix and md teeth on a single film, and adjacent surfaces of teeth and cresal bone, bite-wing film, bite-wing technique
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| Occlusal | examines large areas of the mx or md on a single film, occlusal film , occlusal technique
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Created by:
maressao