Medical Radiography Quiz Questions

121 Questions | Total Attempts: 457

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Radiography Quizzes & Trivia

Let's start this quiz it will give you the different functions of medical radiography. Find out now how much do you know about it!


Questions and Answers
  • 1. 
    A dental assistant may expose radiographs
    • A. 

      If the dentist gives permission

    • B. 

      If he or she is a certified dental assistant

    • C. 

      If it is permissible in the state he or she is employed

    • D. 

      If he or she is supervised by the dentist or hygenist

  • 2. 
    The most sensitive cells to ionizing radiation are
    • A. 

      Bone cells

    • B. 

      Muscle cells

    • C. 

      Nerve cells

    • D. 

      Reproductive cells

  • 3. 
    The best type of xray to penetrate body tissue is 
    • A. 

      Low frequency

    • B. 

      Hard rays, short wavelengths

    • C. 

      Long wavelength

    • D. 

      Soft rays, long wavelengths

  • 4. 
    Xrays are made up of
    • A. 

      Electrons

    • B. 

      Protons

    • C. 

      Photons

    • D. 

      Neutrons

  • 5. 
    The cathode is a filament composed of
    • A. 

      Tungsten

    • B. 

      Silver

    • C. 

      Copper

    • D. 

      Aluminum

  • 6. 
    Milliamperage controls
    • A. 

      The speed with which electrons move from cathode to anode

    • B. 

      Cooling of the anode

    • C. 

      Heating of the anode

    • D. 

      Heating of the cathode

  • 7. 
    Collimation of the primary beam
    • A. 

      Decreases the exposure time

    • B. 

      Restricts the size and shape of the xray beam

    • C. 

      Makes the primary beam more difficult to connect

    • D. 

      Dictates the contrast of the final radiograph

  • 8. 
    The lead diaphragm determines the size and shape of the
    • A. 

      Electron cloud

    • B. 

      Film used

    • C. 

      Xray beam

    • D. 

      Filament

  • 9. 
    The portion of the target that is struck by electrons is called the 
    • A. 

      Focal spot

    • B. 

      Photon point

    • C. 

      Principle point

    • D. 

      End point

  • 10. 
    Proper collimation for the film size and target-film distance will 
    • A. 

      Increase the wavelength

    • B. 

      Decrease the wavelength

    • C. 

      Increase the kvp

    • D. 

      Decrease radiation recieved by the patient

  • 11. 
    To increase the penetrating power of an xray beam, the auxiliary must
    • A. 

      Increase KvP

    • B. 

      Decrease KvP

    • C. 

      Increase mA

    • D. 

      Increase FFD

  • 12. 
    The xray at the center of the xray beam is called the 
    • A. 

      Photon ray

    • B. 

      Central ray

    • C. 

      Secondary beam

    • D. 

      Restricted beam

  • 13. 
    The housing of the xray tube is
    • A. 

      Copper

    • B. 

      Plastic

    • C. 

      Tungsten

    • D. 

      Glass

  • 14. 
    Filtration of the xray beam protects the patient by 
    • A. 

      Eliminating all radiation from the xray head

    • B. 

      Eliminating weak wavelength xrays from the xray beam

    • C. 

      Eliminating short wavelength xrays form xray beam

    • D. 

      Decreasing exposure time

  • 15. 
    The size of the collimated beam for intraoral radiology measured at the patients skin is
    • A. 

      1.5 - 1.75 inches

    • B. 

      2.0 - 2.25 inches

    • C. 

      2.75 - 3.0 inches

    • D. 

      3.25- 3.5 inches

  • 16. 
    Scatter radiation is a type of 
    • A. 

      Secondary radiation

    • B. 

      Primary radiation

    • C. 

      Stray radiation

    • D. 

      Filtered radiation

  • 17. 
    The quality, or penetrating power, of secondary radiation is 
    • A. 

      More than that of primary radiation

    • B. 

      Less than that of primary radiation

    • C. 

      The same as that of primary radiation

    • D. 

      Unrelated to that of primary radiation

  • 18. 
    The first sign of xray dermatitus is 
    • A. 

      Alopecia

    • B. 

      Erythema

    • C. 

      Dry skin

    • D. 

      Pain

  • 19. 
    The time period between the effects of cumulative radiation and visible tissue damage is the 
    • A. 

      Short-term period

    • B. 

      Acute effect period

    • C. 

      Latent period

    • D. 

      Long-term period

  • 20. 
    The amount of radiation a person recieves
    • A. 

      Begins anew each day

    • B. 

      Is cumulative only on the skin

    • C. 

      Is cumulative in the entire body

    • D. 

      Is not harmful in small doses

  • 21. 
    Maximum protection of the patient requires that the xray beam pass through a
    • A. 

      Shielded open-ended cone

    • B. 

      Plastic close-ended cone

    • C. 

      Shielded closed- ended cone

    • D. 

      Lead apron

  • 22. 
    A technique used to measure the operators exposure to radiation is 
    • A. 

      To check the color of the operators finger nail

    • B. 

      For the operator to wear a radiation film badge

    • C. 

      To multiply the number of films the operator has exposed by 0.1 rem

    • D. 

      To count the number of full mouth xray taken

  • 23. 
    Accumulated radiation dosage for those who work with radiation may not exceed
    • A. 

      0.1 rem/week

    • B. 

      1 rem/week

    • C. 

      10 rem/week

    • D. 

      100 rem/week

  • 24. 
    The operator must avoid  all of the following EXCEPT 
    • A. 

      Stray radiation

    • B. 

      Secondary radiation

    • C. 

      Primary beam

    • D. 

      Natural sunlight

  • 25. 
    To avoid exposure to secondary radiation, the operator should stand
    • A. 

      At least 6 feet from xray head

    • B. 

      2 feet to the right of primary beam

    • C. 

      Any distance in back of xray head

    • D. 

      4 feet in front of the patient

  • 26. 
    The most effective way to reduce gonadel exposure from xrays is to 
    • A. 

      Increase kVps

    • B. 

      Use a leaded lap apron

    • C. 

      Increase vertical angulation

    • D. 

      Use ultraspeed film

  • 27. 
    After each use the leaded apron must be 
    • A. 

      Stored in a darkroom

    • B. 

      Folded neatly and stored in the operatory

    • C. 

      Draped over a support rod unfolded

    • D. 

      Discarded for proper infection control

  • 28. 
    Which characteristics of xrays make them both beneficial and hazardous?
    • A. 

      They cause tissue regeneration

    • B. 

      They dehydrate tissue

    • C. 

      They destroy tissue

    • D. 

      They can penetrate metallic restorations

  • 29. 
    The best technique for reducing the radiation exposure to both patient and operator is the use of 
    • A. 

      An automatic timer

    • B. 

      Fast film

    • C. 

      Thinner films

    • D. 

      A thicker cellulose acetate base

  • 30. 
    Film speed is determined by the 
    • A. 

      Amount of silver bromide salt

    • B. 

      Thinkness of cellulose acetate base

    • C. 

      Size of the silver bromide crystal

    • D. 

      Side of film exposed

  • 31. 
    The radiographic film is covered with an emulsion of 
    • A. 

      Silver bromide crystals

    • B. 

      Cellulose

    • C. 

      Silver acetate

    • D. 

      Potassium bromide

  • 32. 
    The raised button on the radiograph aids in 
    • A. 

      Determining film speed

    • B. 

      Processing

    • C. 

      Drying

    • D. 

      Mounting

  • 33. 
    The purpose of the lead foil in dental film is to 
    • A. 

      Provide stiffness to the film

    • B. 

      Reduce film fogging

    • C. 

      Absorb primary beam

    • D. 

      Prevent scattered radiation to the patient

  • 34. 
    The detection of interproximal carries is best seen by a 
    • A. 

      Occlusal film

    • B. 

      Panorex film

    • C. 

      Bite-wing film

    • D. 

      Lateral head plate

  • 35. 
    • A. 

      Waters film

    • B. 

      Lateral skull film

    • C. 

      Occlusal film

    • D. 

      Posterior-anterior film

  • 36. 
    X-ray films should be kept by the dentist along with other records for
    • A. 

      1 year

    • B. 

      2 years

    • C. 

      5 years

    • D. 

      Indefinitely

  • 37. 
    If a patient expresses concern about the hazard of radiation, the patient can be assured that
    • A. 

      Only those films neccessary for proper diagnosis will be exposed

    • B. 

      Automatic film processors will be used

    • C. 

      The auxilary is wearing a safety monitor

    • D. 

      The walls of the operatory are lead lined

  • 38. 
    The periapical film reveals
    • A. 

      Entire jaw

    • B. 

      Upper and lower teeth in same film

    • C. 

      Interproximal caries

    • D. 

      The entire tooth, including apex

  • 39. 
    Interproximal film may show all of the following except
    • A. 

      Incipient caries

    • B. 

      Root tip fractures

    • C. 

      Crest of aveolar bone

    • D. 

      Recurrent decay under existing restoration

  • 40. 
    Which of these is not a factor when considering what size film to use?
    • A. 

      Patients age

    • B. 

      The size of mouth opening

    • C. 

      Shape of patients dental arches

    • D. 

      Patients previous radiation exposure

  • 41. 
    The principle used in panoramic radiography is
    • A. 

      Long-cone paralleling

    • B. 

      Laminagraphy

    • C. 

      Horizontal curvature

    • D. 

      Panoramography

  • 42. 
    A material or substance that does not stop or absorb xrays is known as 
    • A. 

      Radiographic

    • B. 

      Radiopaque

    • C. 

      Radiolucent

    • D. 

      Radiodontic

  • 43. 
    A material or substance that does stop or absorb xrays is known as 
    • A. 

      Radiographic

    • B. 

      Radiopaque

    • C. 

      Radiolucent

    • D. 

      Radiodontic

  • 44. 
    All of the tissues listed are radiopaque EXCEPT
    • A. 

      Enamel

    • B. 

      Cortical plate

    • C. 

      Pulp chamber

    • D. 

      Alveolar bone

  • 45. 
    Which of these appears radiolucent?
    • A. 

      Caries

    • B. 

      Calculus

    • C. 

      Torus

    • D. 

      Root tips

  • 46. 
    What is the name of the diagonal radiopaque line visible at the lower part of the roots of the mandibular molars?
    • A. 

      Mandibular canal

    • B. 

      External oblique ridge

    • C. 

      Inferior border of mandible

    • D. 

      Internal oblique ridge

  • 47. 
    • A. 

      Lingual foramen

    • B. 

      Mental foramen

    • C. 

      Mandibular foramen

    • D. 

      Incisive foramen

  • 48. 
    • A. 

      Hamulus

    • B. 

      Tuberocity

    • C. 

      Zygoma

    • D. 

      Nasal septum

  • 49. 
    What is the thin radiopaque band between the maxillary incisors called?
    • A. 

      Median palatine suture

    • B. 

      Nasal septum

    • C. 

      Inverted Y

    • D. 

      Zygoma

  • 50. 
    What term describes the heavily radiopaque midpoint of the mandible?
    • A. 

      Zygoma

    • B. 

      Odontoma

    • C. 

      Hamulus

    • D. 

      Symphysis

  • 51. 
    What is the small circular radiolucency below the mandibular incisor roots called?
    • A. 

      Incisive foramen

    • B. 

      Lingual foramen

    • C. 

      Mental foramen

    • D. 

      Buccal foramen

  • 52. 
    What is the large radiolucent area shown on maxillary molar radiographs called?
    • A. 

      Maxillary sinus

    • B. 

      Maxillary septum

    • C. 

      Maxillary tuberocity

    • D. 

      Maxillary sequestrum

  • 53. 
    What is the long, narrow, and radiolucent area visible below the roots of the mandibular molars called?
    • A. 

      Inferior border

    • B. 

      Internal oblique ridge

    • C. 

      External oblique ridge

    • D. 

      Mandibular canal

  • 54. 
    What is the radiopaque circular area below the apices of the mandibular incisors called?
    • A. 

      Genial tubercles

    • B. 

      Mental ridge

    • C. 

      Symphysis

    • D. 

      Lamina dura

  • 55. 
    Which of these structures is radiopaque?
    • A. 

      Pulp chamber

    • B. 

      Mucosa

    • C. 

      Periodontal ligament space

    • D. 

      Lamina dura

  • 56. 
    Which of these appears radiolucent?
    • A. 

      Granuloma

    • B. 

      Calculus

    • C. 

      Pulp stone

    • D. 

      Cementoma

  • 57. 
    The basic principle of bisenting the angle technique is 
    • A. 

      Central ray must be directed at right angle to the tooth

    • B. 

      Central ray must be directed at right angle to the film

    • C. 

      Central ray must be directed at right angle to the imaginary line that bisects the angle formed by the long axis of the tooth and the plane of the film

    • D. 

      Central ray must be directed at 45 degree angle to the embrasures

  • 58. 
    The basic principle of the paralleling technique are all of the following EXCEPT 
    • A. 

      Film must be parallel to long axis of the tooth

    • B. 

      8-inch short cone must be used

    • C. 

      Source of xray must be directed perpendicular to tooth and film

    • D. 

      16-inch extension or long cone must be used

  • 59. 
    When taking a full mouth series of intraoral xrays the sagittal plane of the patients head should be
    • A. 

      Perpendicular to floor

    • B. 

      Parallel to floor

    • C. 

      Parallel to tube

    • D. 

      Perpendicular to the central ray

  • 60. 
    The side of the nose is called the
    • A. 

      Tragus

    • B. 

      Zygoma

    • C. 

      Ala

    • D. 

      Maxilla

  • 61. 
    The ala-tragus line is parallel to the floor when taking
    • A. 

      Mandibular occlusal films

    • B. 

      Mandibular periapical films

    • C. 

      Extraoral films only

    • D. 

      Maxillary periapical films

  • 62. 
    The occlusal plane of the maxillary arch being radiographed should be 
    • A. 

      Perpendicular to the floor

    • B. 

      Parallel to the floor

    • C. 

      At an angle of 45 degrees to the floor

    • D. 

      At an angle of 30 degrees to the floor

  • 63. 
    Vertical angulation in the bisecting technique for the same radiograph can differ in patients because of 
    • A. 

      The size of the teeth

    • B. 

      Anatomic differences

    • C. 

      Gagging

    • D. 

      Age

  • 64. 
    Periapical firlms should extend beyond the occlusal plane 
    • A. 

      1/8 inch

    • B. 

      1/4 inch

    • C. 

      3/8 inch

    • D. 

      1/2 inch

  • 65. 
    Firm placement of the film will help prevent
    • A. 

      Overlapping

    • B. 

      Foreshortening

    • C. 

      Gagging

    • D. 

      Elongation

  • 66. 
    A latent image is 
    • A. 

      An image taken with long exposure

    • B. 

      Found only on fast films

    • C. 

      Composed of energized silver halide crystals

    • D. 

      A very light image on developed film

  • 67. 
    Cone cutting results from
    • A. 

      Not being aimed at center of film

    • B. 

      Having incorrect horizontal angulation

    • C. 

      Having insufficient vertical angulation

    • D. 

      Being eliminated from closed plastic cone

  • 68. 
    Black lines across the film may be the result of 
    • A. 

      Double exposure

    • B. 

      Cone cutting

    • C. 

      Underexposure

    • D. 

      Excessive bending

  • 69. 
    Blurred films can result from
    • A. 

      Old film

    • B. 

      Movement of the patient

    • C. 

      Increased kVp

    • D. 

      Faulty xray unit

  • 70. 
    If patient is reluctant to be radiographed, the auxillary should 
    • A. 

      Refer patient to dental hygeniest

    • B. 

      Reschedule the patient

    • C. 

      Refer patient to xray laborator

    • D. 

      Explain procedure thoroughly to patient

  • 71. 
    To visualize the two roots on the maxillary premolar, the central ray should be directed 
    • A. 

      Perpendicular to buccal surface

    • B. 

      Perpendicular to lingual surface

    • C. 

      Toward the occlusal surface

    • D. 

      Slightly from mesial or distal surfaces

  • 72. 
    Exposure of a radiograph on a child
    • A. 

      Requires less time than an adult

    • B. 

      Requires more time than an adult

    • C. 

      Requires same time as an adult

    • D. 

      Should never be attempted

  • 73. 
    Intensifying screens
    • A. 

      Are used in intraoral films

    • B. 

      Decrease exposure time of extraoral films

    • C. 

      Create additional xrays

    • D. 

      Fuse with the film

  • 74. 
    As the target-film distance is increased, the
    • A. 

      More chance of overlapping

    • B. 

      More chance of elongation

    • C. 

      Less distortion

    • D. 

      More chance of foreshortening

  • 75. 
    A panorex film that exhibits distortion in the region and is lighter on one side of the film indicates
    • A. 

      The patients head was not tipped down 5 degree angle

    • B. 

      The wrong calliper adjustment scale was used

    • C. 

      The patients chin was not positioned properly

    • D. 

      A cotton roll was not placed between the anterior incisors

  • 76. 
    The usual number of filmsin a complete dental radiographic survey is 
    • A. 

      10-12

    • B. 

      18-20

    • C. 

      24-26

    • D. 

      26-28

  • 77. 
    In the paralleling technique, a device used to hold the film in the patients mouth is
    • A. 

      A film holder

    • B. 

      A plastic dental instrument

    • C. 

      Patients finger

    • D. 

      Rubber bite block

  • 78. 
    Extraoral films are
    • A. 

      Not sensitive to light

    • B. 

      Less sensitive to light

    • C. 

      Just as sensitive to light as intraoral films

    • D. 

      More sensitive to light than intraoral films

  • 79. 
    If the mA is increased while the kVp adnd exposure time are kept constant, the resulting films will
    • A. 

      Be lighter

    • B. 

      Be darker

    • C. 

      Remain the same

    • D. 

      Have a herringbone pattern

  • 80. 
    Elongation is caused by
    • A. 

      Insufficient vertical angulation

    • B. 

      Too much vertical angulation

    • C. 

      Insufficient horizontal angulation

    • D. 

      Excessive bending of the film

  • 81. 
    Foreshortening is caused by
    • A. 

      Insufficient vertical angulation

    • B. 

      Too much vertical angulation

    • C. 

      Insufficient horizontal angulation

    • D. 

      Excessive bending of the film

  • 82. 
    If a film is exposed on the wrong side, the result will be 
    • A. 

      Darker films

    • B. 

      No image at all

    • C. 

      No effect

    • D. 

      A herringbone pattern

  • 83. 
    Xrays are mose effectively stopped by
    • A. 

      Copper

    • B. 

      Glass

    • C. 

      Lead

    • D. 

      Tungsten

  • 84. 
    After a film is exposed, the target-film distance is doubled.  The exposure time necessary to obtain a second film of equal density to the first film is 
    • A. 

      Same as first film

    • B. 

      Twofold

    • C. 

      Threefold

    • D. 

      Fourfold

  • 85. 
    A patient with an extemely narrow maxillary arch presents placement problems in xraying the premolar areas.  in the bisecting technique, which of the following placements would help solve this problem
    • A. 

      Use the paralleling technique for this film

    • B. 

      Use cross section film placements

    • C. 

      Force film into the midline of the palate and increase vertical angulation

    • D. 

      Lay the film on a flat plane in contact with t he opposite side of the palate to increase vertical angulation

  • 86. 
    Which of the follwoing is used to describe the blackness of an exposed radiograph?
    • A. 

      Density

    • B. 

      Detail

    • C. 

      Darkness

    • D. 

      Development

  • 87. 
    The difference in density in various regions of a radiograph is called
    • A. 

      Collimation

    • B. 

      Contrast

    • C. 

      Filtration

    • D. 

      Definition

  • 88. 
    The dental auxillary is asked to change the 8-inch shortcone to the 16-inch long cone.  At twice the distance, in intensity of the xrays is now only
    • A. 

      1/2 as great

    • B. 

      1/4 as great

    • C. 

      1/6 as great

    • D. 

      1/8 as great

  • 89. 
    For maximum penetration of xrays, which of the following combinations would you select?
    • A. 

      90 kvp and 10 ma

    • B. 

      65 kvp and 10 ma

    • C. 

      70 kvp and 90 ma

    • D. 

      10 kvp and 65 ma

  • 90. 
    The dentists new xray machine has inherent filtration of 2 mm of aluminum.  The dentist is operating the xray machine above 70 kvp for diagnostic film.  Which of the following amounts of added filtration will be necessary to meet the minimum filtration required?
    • A. 

      1.5 mm aluminum

    • B. 

      0.5 mm aluminum

    • C. 

      2.5 mm aluminum

    • D. 

      2.0 mm aluminum

  • 91. 
    Appropriate infection control procedures during xray exposure should include 
    • A. 

      Wiping the film holders with alcohol gauze

    • B. 

      Use of disposable cotton roll holders

    • C. 

      Placement of a lead apron around the patient

    • D. 

      Placement of a disposable plastic bag over xray tubehead

  • 92. 
    When exposing the patient to only one periapical radiograph, the auxillary
    • A. 

      May diagnose the film

    • B. 

      Must enter this procedure in the dental chart

    • C. 

      May take as many retakes as needed

    • D. 

      Does not need to use the lead apron on the patiend

  • 93. 
    Cephalometric radiographs are used in which area of dentistry
    • A. 

      Operative

    • B. 

      Pedodontics

    • C. 

      Orthodontics

    • D. 

      Periodontics

  • 94. 
    Extraoral films are placed in rigid frames called
    • A. 

      Film frames

    • B. 

      Skull plates

    • C. 

      Jaw plates

    • D. 

      Cassettes

  • 95. 
    The best sequence for exposing maxillary radiographs is 
    • A. 

      Central incisors, right cuspid, left cuspid

    • B. 

      Central incisors, right cuspid, right bicuspid

    • C. 

      Central incisors, right bicuspid, right cuspid

    • D. 

      Central incisors, right molar, right bicuspid

  • 96. 
    Radiographs of edentulous portions of a patients mouth
    • A. 

      Should be exposed routinely

    • B. 

      Should be exposed only on request of the patient

    • C. 

      Should be exposed only if the entire arch is edentulous

    • D. 

      Are unnecessary

  • 97. 
    A logical sequence for a full mouth survey of a patient with a complete dentition is 
    • A. 

      Upper arch, bitewings, lower arch

    • B. 

      Upper arch, lower arch, bitewings

    • C. 

      Bitewings, lower arch, upper arch

    • D. 

      Lower arch, bitewings, upper arch

  • 98. 
    If the end of the xray cone approximates the tip of the patients nose, the operator is exposing a radiograph of the
    • A. 

      Maxillary cuspid

    • B. 

      Maxillary central incisors

    • C. 

      Mandibular incisors

    • D. 

      Maxillary bicuspid

  • 99. 
    The developing solution
    • A. 

      Should always be left open

    • B. 

      Should be partially covered

    • C. 

      Should always be covered

    • D. 

      Should be covered omly when films are being developed

  • 100. 
    Films left overnight in the fixer
    • A. 

      Will be clear

    • B. 

      Will be too dark to read

    • C. 

      Will not be affected

    • D. 

      Will disintegrate

  • 101. 
    During processing, when can radiographs safely be exposed to light?
    • A. 

      After final wash

    • B. 

      After development

    • C. 

      After the first wash

    • D. 

      After being placed in the fixer

  • 102. 
    The thermometer used to measure the temperature of the processing solutions is located 
    • A. 

      In the developer

    • B. 

      In the wash water

    • C. 

      In the fixer

    • D. 

      Above the processing solutions on the wall

  • 103. 
    Film fog can occur if there is 
    • A. 

      Extremely thick bone

    • B. 

      A light leak in the dark room

    • C. 

      Slow film

    • D. 

      Reversal of the film

  • 104. 
    Film is washed after removing it from the developing solution to
    • A. 

      Remove any debris on the film

    • B. 

      Speed up the developing process

    • C. 

      Stop the developing process

    • D. 

      Remove the precipitated silver salts

  • 105. 
    The fixing solution is 
    • A. 

      Acidic

    • B. 

      Neutral

    • C. 

      Basic

    • D. 

      First basic, then neutral after dilution

  • 106. 
    Two films are developed for the same length of time but at different temperatures.  The film developed at the higher temperature will be
    • A. 

      Lighter

    • B. 

      Darker

    • C. 

      The same

    • D. 

      Clear

  • 107. 
    If an unexposed film is processed, it will appear 
    • A. 

      White

    • B. 

      Black

    • C. 

      Blue

    • D. 

      Clear

  • 108. 
    Fixing the film
    • A. 

      Removes the unaffected silver salts

    • B. 

      Removes the affected silver salts

    • C. 

      Softens the film

    • D. 

      Peels the emulsion from the film base

  • 109. 
    The temperature of the radiographic processing solutions is adjusted by
    • A. 

      Individual heaters

    • B. 

      Chemical interaction

    • C. 

      A temperature- adjustable waterbath

    • D. 

      Gas heaters

  • 110. 
    If a radiograph remains in the developing solution too long, the film will be
    • A. 

      Lighter

    • B. 

      Darker

    • C. 

      Lighter only if the temperature is increased

    • D. 

      Unaffected because time is not a factor

  • 111. 
    If a properly processed film is left overnight  in the water it will be
    • A. 

      Dark

    • B. 

      Light with faded images

    • C. 

      Unchanged

    • D. 

      Clear with no image

  • 112. 
    After the films are removed from from the fixer, they are washed for
    • A. 

      5-10 min

    • B. 

      11-19 min

    • C. 

      20-30 min

    • D. 

      1 hour

  • 113. 
    For the developing solutions to work, the solution must be
    • A. 

      Acidic

    • B. 

      Neutral

    • C. 

      Basic

    • D. 

      Very warm

  • 114. 
    A processed film reveals small white spots, indicating incomplete development.  The error on the film during processing was caused by
    • A. 

      Exposure to visible light and incomplete fixing

    • B. 

      Films coming in contact with fixing solution before the proper processing procedure

    • C. 

      Incomplete fixing and films not agitated in developer

    • D. 

      Exposure to visible light and trapped air bubbles on film

  • 115. 
    Reticulation is
    • A. 

      Cracking of the film emulsion

    • B. 

      An electric charge in the developing solution

    • C. 

      A latent image

    • D. 

      Caused by excess radiation

  • 116. 
    The best way to dry processed film manually is to
    • A. 

      Place films on a flat counter top with towels

    • B. 

      Use the air syringe from the dental unit

    • C. 

      Hang the films over the heat sterilizer

    • D. 

      Hang film racks in the dark room carefully so as not to allow wet films to contact each other

  • 117. 
    Films not fixed for a long enough period of time will appear
    • A. 

      To have black lines running through them

    • B. 

      To be brittle

    • C. 

      To have a brown tint

    • D. 

      White

  • 118. 
    The chemicals used in processing solutions are dissolved in 
    • A. 

      Cellulose acetate

    • B. 

      Distilled water

    • C. 

      A thick emulsion

    • D. 

      Potassium bromide

  • 119. 
    The strength of the safelight permitted in the dark room depends on the 
    • A. 

      Size of the film

    • B. 

      Secured lighting in the room

    • C. 

      Sensitivity of the film

    • D. 

      Tooth being radiographed

  • 120. 
    How often should the processing solutions be changed?
    • A. 

      Each week

    • B. 

      Every 3-4 weeks

    • C. 

      Every 5-6 weeks

    • D. 

      Every 7-8 weeks

  • 121. 
    The optimum time-temperature relationship for processing dental radiographs is
    • A. 

      74 degree F for 4 1/2 minutes

    • B. 

      68 degrees F for 4 1/2 minutes

    • C. 

      50 degrees F for 5 minutes

    • D. 

      70 degrees F for 6 minutes