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RHS Flash Cards

TermDefinition
Unexposed Film Appearance clear film w/ 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, & first molars of the MX & 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 and distorted (all or portion of film)
Film Creasing Appearance a thin radiolucent (dark) line appears on the film (usually straight)
Phalangioma Appearance patient's finger appears on the film image
Double Exposure Appearance two ( double ) images are superimpose on top of each other
Patient movement Appearance film image is distorted or blurred
Incorrect Vertical Angulation Appearance short teeth w/ blunted roots appear on the film (foreshortened)
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, and both MX and MD molars, and crestal bone
Reversed Film Appearance light images w/ a herringbome pattern appear on the film
X-ray machine Purpose (2) 1- produce quality radiographs, 2 -detection of disease and lesions for diagnostic purposes
Federal Regulations- 1968 Radiation Control for Health and Safety Act: standardize performance of x-ray equipment
Federal Regulations -1974 US FDA standardized all manufacturing of radiographic dental equipment (all machines must meet this)
State Gov't Regulations determine when and how dental x-ray equipment is monitored : MN- mandatory every 2 years
Tube head or tube housing used to produce x-rays
Extension arm used to suspend tubehead, house electrical wires and allow movement in all directions and positioning of the x-ray tubehead
Control panel used to : (3) allows for regulation x-ray beam, control electrical current for generation of X-rays, and house control buttons and settings
kVp 65-100 kVp range- peak of energy
mA 7-15 range-amount
Exposure time 1/60th of a second-standard and 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-Sensor-(PSP) Phosphor Storage Plates
Film composition (4) film base, adhesive layer, film emulsion, protective layer
film emulsion purpose and mixture to give film greater sensitivity to x-radiation, homogeneous mixture of gelatin and silver halide crystals
Latent image stored image not visible on the film
Purpose of Lead Foil sheet to prevent film fogging from scatter radiation
Periapical examines the entire tooth and surrounding structures
Bitewing examines the interproximal surfaces of the crowns of both MX and MD teeth w/ crestal bone
Occlusal examines large area of the MX or MD jaw
Types of Intra-Oral Radiographic Examination (3) periapical, interproximal, and occlusal
periapical (Purpose, film type, and technique used to examine the entire tooth and supporting bone, periapical film, paralleling an bisecting technique
Interproximal (Purpose, Film type, and Technique) examine the crown of both the mx and md teeth on a single film, and adjacent surfaces of teeth and crestal bone, bite-wing film, bite-wing technique
Occlusal (purpose, Film type, and technique) examine large areas of the mx or md on a single film, occlusal film, occlusal tehnique
Created by: a.rodriguez
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