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DASA Radiography Exam – Questions & Answers
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DASA Radiography Exam – Questions & Answers
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DASA Radiography Exam – Questions &Answers
Dental Radiograph - -representation of a three dimensional object used in
dentistry to study and identify structures not visible to the naked eye
-Radiography - -applying the basic sciences of physics and chemistry
-Wilhelm Conrad Roentgen - -German physicist, discovered xrays in 1895
-William Coolidge - -invented the first xray tube in 1913
-x-rays - -electromagnetic rays that are not detected by any of the senses
-density - -the density of the object being penetrated
-x-ray tube - -the tube responsible for generating x-rays
-Types of x-ray radiation - -primary radiation, remnant radiation, secondary
radiation, scattered radiation, stray radiation
-Intraoral techniques for film exposures - -bisecting and paralleling
-Bisecting technique - -used to capture specific or unique radiographs
-Paralleling technique - -most commonly used technique for exposing the
periapical and bitewing radiographs
-types of film exposures - -periapical, bitewing, pano, and FMX
-common radiographic errors - -distortion, elongation, foreshortening,
overlapping, cone cutting, clear film, double exposure, blurred image,
underexposed film, overexposed image, radiopaque film images, and
backward film
-film packet - -outer package, dental film, black paper, and lead foil
-the radiographic image - -depicted by varying shades of gray, black, and
white areas
-radiolucent - -dark areas on the radiograph
-radiopaque - -light areas on the radiograph
-radiographic dentistry - -the degree of darkness on a radiograph
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