Deck 7: Dental X-Ray Film

Question 1

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.

Answer 1

latent image.

Question 2

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

Answer 2

blue

Question 3

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

Answer 3

To shield the film from secondary backscattered radiation

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

Why would you use the identification dot when taking radiographs?

A)To determine film orientation
B)To identify whether or not a film has been exposed
C)To indicate the side of the film with an emulsion
D)To identify whether the film is D-speed film or F-speed film

Question 6

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 7

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 8

When would you use a two-film packet when taking radiographs on your patient?

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 9

The film base is ____ mm thick.

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

Question 10

Which of the following types of dental x-ray film would you place inside your patient's mouth?

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

Question 11

Latent image centers are aggregates of

A)silver bromide crystals.
B)bromine atoms.
C)neutral silver atoms.
D)gelatin.

Question 12

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 13

___________ is the main component of the silver halide crystals in dental x-ray film.

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

Question 14

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 15

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 16

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 17

The film base is a flexible piece of

A)shellac.
B)cardboard.
C)acetate.
D)polyester plastic.

Question 18

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 19

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 20

Which component of x-ray film has a suspension of millions of microscopic silver halide crystals?

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

Question 21

A screen that produces a green light must be paired with a __________-sensitive screen film.

A)red
B)yellow
C)blue
D)green

Question 22

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 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 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 25

You are taking bite-wing radiographs on a 3-year-old child.Which size film should you use?

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

Question 26

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 27

Which size film should you use to take a bite-wing film on your adult patient?

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

Question 28

Where is the thin lead foil sheet positioned in the film packet?

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 29

Which of the following film should you use on your young pediatric patient if you need to get a radiograph of her maxillary teeth and maxilla?

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

Question 30

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 31

Your dentist asks you to take radiographs on your patient in order to check the interproximal surfaces of the posterior maxillary and mandibular teeth for decay.Which type of film would be the best to take the radiograph?

A)Maxillary and mandibular periapical film
B)Panoramic film
C)Bite-wing film
D)Occlusal film

Question 32

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 33

Which film size would you use to take posterior periapical radiographs on your adult patient?

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

Question 34

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 35

When you are placing the film packet in your patient's mouth,which side of the film packet would you place toward the patient's teeth?

A)The side with the flap that is used to open the dental film
B)The solid white side
C)The color-coded side
D)The identification dot side

Question 36

Your adolescent patient is scheduled for an orthodontic evaluation and needs a single radiograph of his side facial profile that includes his skeletal structure,tissues,jaws,and teeth.Which one of the following radiographs should you take?

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

Question 37

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 38

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

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

Question 39

(1)An intensifying screen is a device that transfers x-ray energy into visible light;(2)the visible light,in turn,exposes the screen film.

A)Both statements are true.
B)Both statements are false.
C)The first statement is true;the second statement is false.
D)The first statement is false;the second statement is true.

Question 40

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 41

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 42

Film is best stored in an area that is

A)hot.
B)humid.
C)cool and dry.
D)exposed to radiation.

Question 43

(1)Non-screen film is sensitive to fluorescent light.(2)Screen films are sensitive to the visible light emitted from the intensifying screen.

A)Both statements are true.
B)Both statements are false.
C)The first statement is true;the second statement is false.
D)The first statement is false;the second statement is true.

Question 44

Duplicating film

A)is exposed to x-rays.
B)has emulsion on both sides.
C)is used to make an identical copy of an intraoral or extraoral radiograph.
D)is the second film in a two-film intra-oral film packet.

Question 45

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

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

Question 46

(1)A panoramic radiograph is an example of an intraoral film.(2)An occlusal radiograph is an example of an extraoral film.

A)Both statements are true.
B)Both statements are false.
C)The first statement is true;the second statement is false.
D)The first statement is false;the second statement is true.