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RHS Flash Cards

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

 



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