QUESTIONS AND CORRECT ANSWERS
GRADED A+
◉ a film exposed to light appears as. Answer: black
◉ an overexposed receptor appears as. Answer: dark or high density due
to the excessive exposure time, kV, or mA
◉ an underexposed receptor appears. Answer: light or low density due
to the lack of exposure time, kV or mA
◉ bending of a film can appear in an image as. Answer: stretched or
distorted teeth
◉ creasing of a film can appear in an image as. Answer: thin radiolucent
artifacts on the sensor
◉ Phalangioma appears on an image as. Answer: patients fingers on the
image
◉ double image of a film appears as. Answer: two images on one film;
happens when a film is double exposed
, ◉ a backward placed film appears with. Answer: herringbone or
tiremark pattern in image
◉ an intraoral film has a film base of. Answer: 0.2 mm of thick
polyester plastic
◉ film emulsion. Answer: is a coating mixture of gelatin and silver
halide crystals
◉ the silver halide crystals are responsible for. Answer: absorbing the
radiation; the absorption creates the latent image until the film is
properly processed
◉ the xrays strike and ionize some of the silver halide crystals and that
is what forms the. Answer: latent image
◉ lead foil sheet of film. Answer: shields the film from scatter radiation
-has a pattern that can be visible if placed improperly in mouth
◉ film sizes. Answer: 0 - pedodontics
1 - children or ant. teeth of adults
2 - standard film for BWX and PA of adults and teens
3 - extra long film for long BWX (used rarely)
4 - occlusal film