Dental Radiography Exam 1
three components of xray machine - ANSWER tubehead, extension arm, and control
panel
four components of xray film - ANSWER film base, adhesive layer, film emulsion, and
protective layer
________ in film emulsion absorb the x-radiation during xray exposure and store the
energy from the radiation - ANSWER silver halide crystals
invisible pattern on emulsion - ANSWER latent image
three types of film used in dental radiography - ANSWER intraoral film, extraoral film,
duplicating film
intraoral film sizes - ANSWER 0,1,2,3,4--larger the number, larger the size
intraoral film speeds - ANSWER D, F......f speed film reduces patient exposure to
radiation by 60% compared with d speed
__________ transform xray energy into visible light, which in turn exposes the screen
film - ANSWER intensifying screens
special type of photographic film used to make an identical copy of an intraoral or
extraoral radiograph - ANSWER duplicating film
5 steps in film processing - ANSWER development, rinsing, fixation, washing, and
drying
chemical solution used in development process to reduce the exposed, energized silver
halide crystals - ANSWER developer
developer solution 4 basic ingredients - ANSWER developing agent, perservative,
accelerator, and restrainer
fixer solution 4 basic agents - ANSWER fixing agent, preservative, hardening agent,
and acidifier
disease transmission may occur as a result of - ANSWER direct contact with pathogens
in saliva, blood, respiratory secretions, lesions...indiret contact with contaminated
objects or instruments....direct contact with airborne contaminants present in spatter or
aerosols or oral and respiratory fluids
, 3 conditions for infection control to occur - ANSWER susceptible host, pathogen with
suffiencient infectivity and numbers to cause infection
minimum ppe's - ANSWER protective attire, care of hands
film is placed in mouth, parallel to long axis of tooth, central ray is directed
perpendicular to film and long axis of tooth - ANSWER paralleling technique
anterior teeth film size - ANSWER 1
posterior teeth size film - ANSWER 2
5 basic rules of paralleling technique - ANSWER film must cover prescribed area, film
positioned parallel to long axis of tooth, central ray directed perpendicular to film and
long axis of tooth, central ray directed through contact areas between teeth, and xray
beam centered over film to ensure all areas of film are being exposed
which teeth should you always start with in paralleling technique - ANSWER anterior
advantages of paralleling technique - ANSWER produces images with dimensional
accuracy,simple and easy to learn and use, easy to standardize, and can be accurately
repeated
bisecting technique used to expose - ANSWER periapical films
in bisecting technique: - ANSWER film placed along lingual surface of tooth, where film
contacts tooth-plane of film and long axis of tooth form an angle, imaginary bisector
divides the angle in half or bisects it, and central ray of xray beam is directed
perpendicular to the imaginary bisector
film size used with bisecting - ANSWER 2--positioned vertically for anterior and
horizontally for posterior
incorrect horizontal angulation results in - ANSWER overlapping
correct vertical angulation has the tooth... - ANSWER the same size as the film
Forshortening - ANSWER excessive vertical angulation, tooth is shortened
elongation - ANSWER insufficient vertical angulation, tooth is longer
bite-wing includes - ANSWER crowns of maxillary and mandibular teeth, interproximal
areas, and areas of crestal bone on the same film
four sizes of film - ANSWER 0,1,2,3...size 2 recommended
three components of xray machine - ANSWER tubehead, extension arm, and control
panel
four components of xray film - ANSWER film base, adhesive layer, film emulsion, and
protective layer
________ in film emulsion absorb the x-radiation during xray exposure and store the
energy from the radiation - ANSWER silver halide crystals
invisible pattern on emulsion - ANSWER latent image
three types of film used in dental radiography - ANSWER intraoral film, extraoral film,
duplicating film
intraoral film sizes - ANSWER 0,1,2,3,4--larger the number, larger the size
intraoral film speeds - ANSWER D, F......f speed film reduces patient exposure to
radiation by 60% compared with d speed
__________ transform xray energy into visible light, which in turn exposes the screen
film - ANSWER intensifying screens
special type of photographic film used to make an identical copy of an intraoral or
extraoral radiograph - ANSWER duplicating film
5 steps in film processing - ANSWER development, rinsing, fixation, washing, and
drying
chemical solution used in development process to reduce the exposed, energized silver
halide crystals - ANSWER developer
developer solution 4 basic ingredients - ANSWER developing agent, perservative,
accelerator, and restrainer
fixer solution 4 basic agents - ANSWER fixing agent, preservative, hardening agent,
and acidifier
disease transmission may occur as a result of - ANSWER direct contact with pathogens
in saliva, blood, respiratory secretions, lesions...indiret contact with contaminated
objects or instruments....direct contact with airborne contaminants present in spatter or
aerosols or oral and respiratory fluids
, 3 conditions for infection control to occur - ANSWER susceptible host, pathogen with
suffiencient infectivity and numbers to cause infection
minimum ppe's - ANSWER protective attire, care of hands
film is placed in mouth, parallel to long axis of tooth, central ray is directed
perpendicular to film and long axis of tooth - ANSWER paralleling technique
anterior teeth film size - ANSWER 1
posterior teeth size film - ANSWER 2
5 basic rules of paralleling technique - ANSWER film must cover prescribed area, film
positioned parallel to long axis of tooth, central ray directed perpendicular to film and
long axis of tooth, central ray directed through contact areas between teeth, and xray
beam centered over film to ensure all areas of film are being exposed
which teeth should you always start with in paralleling technique - ANSWER anterior
advantages of paralleling technique - ANSWER produces images with dimensional
accuracy,simple and easy to learn and use, easy to standardize, and can be accurately
repeated
bisecting technique used to expose - ANSWER periapical films
in bisecting technique: - ANSWER film placed along lingual surface of tooth, where film
contacts tooth-plane of film and long axis of tooth form an angle, imaginary bisector
divides the angle in half or bisects it, and central ray of xray beam is directed
perpendicular to the imaginary bisector
film size used with bisecting - ANSWER 2--positioned vertically for anterior and
horizontally for posterior
incorrect horizontal angulation results in - ANSWER overlapping
correct vertical angulation has the tooth... - ANSWER the same size as the film
Forshortening - ANSWER excessive vertical angulation, tooth is shortened
elongation - ANSWER insufficient vertical angulation, tooth is longer
bite-wing includes - ANSWER crowns of maxillary and mandibular teeth, interproximal
areas, and areas of crestal bone on the same film
four sizes of film - ANSWER 0,1,2,3...size 2 recommended
