Deck 7: Dental X-Ray Film

Question 1

Which component of x-ray film provides a stable support for the emulsion?

A) Film base
B) Adhesive layer
C) Gelatin
D) Halide crystals

Answer 1

Film base

Question 2

The identification dot is used to:

A) Determine film orientation.
B) Identify whether or not a film has been exposed.
C) Indicate the side of the film with an emulsion.
D) Identify whether the film is D-speed film or F-speed film.

Answer 2

Determine film orientation.

Question 3

Latent image centers are aggregates of:

A) Silver bromide crystals.
B) Bromine atoms.
C) Neutral silver atoms.
D) Gelatin.

Answer 3

Neutral silver atoms.

Question 4

During formation of the latent image, irregularities in the lattice structure of the exposed crystal, known as ____, attract silver atoms.

A) The protective layer
B) The emulsion
C) Sensitivity specks
D) The adhesive layer

Question 5

The two-film packet may be used:

A) For maxillary radiographs where the bone is denser than in the mandible.
B) To prevent more photons from passing through the film into patient tissue.
C) When a duplicate record of a radiographic examination is needed.
D) Routinely for adults; however, a one-film packet should be used for children and adolescents.

Question 6

The film emulsion is composed of a homogenous mixture of:

A) Calcium tungstate and lead salt crystals.
B) Gelatin and barium salt crystals.
C) Gelatin and silver halide crystals
D) Primer and silver halide crystals.

Question 7

Which of the following statements is true regarding dental x-ray film and formation of the latent image?

A) The film is placed to the buccal of the teeth.
B) The film is placed to the lingual of the teeth.
C) A periapical film is an extraoral film.
D) A bite-wing film is an extraoral film.

Question 8

A two-film packet requires ____ exposure time as a one-film packet.

A) Half the
B) The same
C) Twice the
D) Four times the

Question 9

Which of the following statements is true of a two-film packet?

A) A two-film packet requires twice the amount of exposure to produce a single radiograph.
B) A two-film packet has a single emulsion, whereas a one-film packet has a double emulsion.
C) A two-film packet has a double emulsion, whereas a one-film packet has a single emulsion.
D) Intraoral x-ray film is a double-emulsion type of film regardless of whether the film packet contains one or two films.

Question 10

The adhesive layer is added to the ____ before the ____ is(are) applied.

A) gelatin; halide crystals
B) halide crystals; gelatin
C) film base; emulsion
D) emulsion; film base

Question 11

The film base is ____ mm thick.

A) 0.02
B) 0.2
C) 2.0
D) 20

Question 12

The film base is a flexible piece of:

A) Shellac
B) Cardboard
C) Acetate
D) Polyester plastic

Question 13

The film emulsion is:

A) Attached to both sides of the film.
B) Attached to one side of the film.
C) Made of polyester plastic.
D) Opaque to block out the passage of light.

Question 14

The film base is transparent with a slight ____ tint used to emphasize contrast and enhance image quality.

A) Amber
B) Red
C) Blue
D) Green

Question 15

The areas of the film that are ____ energized will be ____ when the film is processed. 1. more; darker
2) more; lighter
3) less; darker
4) less; lighter

A) 1 and 3
B) 1 and 4
C) 2 and 3
D) 2 and 4

Question 16

The halide in dental x-ray film is primarily silver:

A) Iodide
B) Bromide
C) Chloride
D) Fluoride

Question 17

The invisible pattern of stored energy on the exposed film is called the:

A) Variable density pattern.
B) Latent image.
C) X-ray photon.
D) Emulsion.

Question 18

What is the purpose of the lead foil sheet found within the film packet?

A) To cover the film and shield the film from light.
B) To protect the film from moisture.
C) To shield the film from primary radiation emitted by the x-ray tubehead.
D) To shield the film from secondary backscattered radiation.

Question 19

Which of the following types of dental x-ray film is placed inside the mouth?

A) Intraoral film
B) Extraoral film
C) Duplicating film
D) Screen film

Question 20

The latent image is stored by the ____ in dental x-ray film.

A) Gelatin
B) Film base
C) Adhesive layer
D) Silver halide crystals

Question 21

A size # ____ film is the most frequently used bite-wing film.

A) 0
B) 1
C) 2
D) 3

Question 22

Which type of intraoral film is best for visualizing interproximal surfaces?

A) Periapical
B) Bite-wing
C) Occlusal
D) Periapical and occlusal

Question 23

The apex (tip) of the tooth roots may be seen on which type(s) of intraoral film?

A) Periapical
B) Bite-wing
C) Occlusal
D) Periapical and occlusal

Question 24

Which type of intraoral film is best for examination of large areas of the maxilla or mandible?

A) Periapical
B) Bite-wing
C) Occlusal
D) Periapical and occlusal

Question 25

Which of the following types of film shows a wide view of the upper and lower jaws on a single radiograph?

A) Periapical
B) Bite-wing
C) Panoramic
D) Cephalometric

Question 26

A # ____ size film is a standard adult periapical film.

A) 0
B) 1
C) 2
D) 4

Question 27

Which of the following film speed is the fastest film currently available?

A) C-speed film
B) D-speed film
C) E-speed film
D) F-speed film

Question 28

Blue-sensitive screen film must be paired with screens that produce ____ light.

A) Red
B) Yellow
C) Blue
D) Green

Question 29

Which size of bite-wing film is used to examine posterior teeth in very small children?

A) 0
B) 1
C) 2
D) 3

Question 30

Which of the following types of film exhibits the bony and soft tissue areas of the facial profile?

A) Periapical
B) Bite-wing
C) Panoramic
D) Cephalometric

Question 31

The tube side of the dental film packet:

A) Has the flap used to open the dental film.
B) Is solid white.
C) Should face the patient's tongue.
D) Is color-coded.

Question 32

Which type of intraoral film is used to examine the crowns of both the maxillary and the mandibular teeth on one film?

A) Maxillary periapical film
B) Mandibular periapical film
C) Bite-wing film
D) Occlusal film

Question 33

The label side of the dental film packet:

A) Is solid white.
B) Has a raised bump in one corner that corresponds to the identification dot.
C) Should face the tubehead when placed in the mouth.
D) Is color-coded to distinguish between one-film and two-film packets and between film speeds.

Question 34

The embossed pattern placed on the lead foil sheet by the manufacturer will reveal:

A) Whether or not the film has been exposed.
B) If the film has been exposed to moisture.
C) If the film packet is inadvertently positioned in the mouth backward and then exposed.
D) If the film packet is inadvertently opened before the film is processed.

Question 35

The thin lead foil sheet is positioned:

A) Behind the film.
B) In front of the film.
C) Behind the paper film wrapper.
D) In front of the paper film wrapper.

Question 36

Rare earth screens:

A) Have phosphors that emit blue light.
B) Have phosphors that emit green light.
C) Are less efficient than calcium tungstate intensifying screens.
D) Are slower than calcium tungstate intensifying screens.

Question 37

Lack of contact between screen and film results in:

A) An overexposed film.
B) An underexposed film.
C) A light leak.
D) A loss of image sharpness.

Question 38

An intensifying screen is a smooth plastic sheet coated with minute fluorescent crystals known as:

A) Nuclei of crystallization.
B) Germinal centers.
C) Sensitivity specks.
D) Phosphors.

Question 39

Screen film:

A) Is sensitive to direct exposure to radiation.
B) Is sensitive to fluorescent light.
C) Requires more exposure time than nonscreen film.
D) Is not recommended for use in dentistry.

Question 40

A fast film responds more quickly than a slow film, because:

A) The tubehead shutter opens wider.
B) Exposure times are longer for fast films.
C) The silver halide crystals in the emulsion are larger.
D) A different processing chemistry is used.

Question 41

Duplicating film:

A) Is not exposed to x-rays.
B) Has an emulsion on both sides.
C) Has an emulsion on one side only.
D) Both a and c.

Question 42

Film is best stored in an area that is:

A) Hot.
B) Humid.
C) Cool and dry.
D) Exposed to radiation.

Question 43

The optimum temperature for film storage ranges from ____ to ____ degrees Fahrenheit.

A) 30; 50
B) 50; 70
C) 70; 90
D) 90; 110