Deck 7: Dental X-Ray Film and Processing Methods

Question 1

Which of these intraoral dental films is 2.25 inches × 3 inches?

A) Size #1
B) Size #2
C) Size #3
D) Size #4

Answer 1

Size #4

Question 2

Which of these protects the film from white-light exposure?

A) Antihalation coating
B) Solarized emulsion
C) Lead foil
D) Black paper

Answer 2

Black paper

Question 3

Extraoral film is used for ALL of the following projections EXCEPTone. Which one is this EXCEPTION?

A) Lateral jaw radiographs
B) Occlusal radiographs
C) Cephalometric radiographs
D) Panoramic radiographs

Answer 3

Occlusal radiographs

Question 4

Which of these is NOT a component of the dental x-ray film packet?

A) Black paper wrapping
B) One or two films
C) Moisture-resistant outer wrapping
D) Aluminum foil

Question 5

Which of the following is NOT an intraoral projection?

A) Periapical
B) Occlusal
C) Panoramic
D) Bitewing

Question 6

Which of these is NOT a component of dental x-ray film?

A) Protective layer
B) Base
C) Phosphor crystals
D) Emulsion

Question 7

Each of the following statements regarding dental x-ray film speed is true EXCEPT one. Which one is the EXCEPTION?

A) E-speed film is the fastest film speed currently available.
B) Film speed is printed on the back side of each individual film packet.
C) Trademark names like "Super" or "Ultra" are not film speeds.
D) Film speeds slower than D are no longer used.

Question 8

Each of the following statements is true EXCEPT one. Which one is the EXCEPTION?

A) During exposure, the x-rays strike and ionize all silver halide crystals on the film.
B) The invisible image on an x-ray film is called the "latent image."
C) The function of the gelatin in film emulsion is to keep the silver halide crystals evenly suspended over the base.
D) Silver halide in the emulsion is primarily silver bromide.

Question 9

Which of the following indicates the correct placement of an intraoral film?

A) The back side faces the buccal surfaces of the teeth and away from the source of radiation.
B) The back side faces the lingual surfaces of the teeth and is facing the source of radiation.
C) The tube side faces the buccal surfaces of the teeth and faces the source of radiation.
D) The tube side faces the lingual surfaces of the teeth and faces the source of radiation.

Question 10

Which film size is ideal for positioning a periapical radiograph in the narrow canine region on an adult patient?

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

Question 11

Which portion of the dental film retains the latent image?

A) The protective layer
B) The gelatin
C) The silver halide crystals
D) The adhesive

Question 12

Graininess of a radiographic image results from:

A) large silver halide crystals.
B) the addition of radiosensitive dyes.
C) a decrease in film speed.
D) film packets that contain two films.

Question 13

Which of the following statements regarding film storage and protection is FALSE?

A) It is light-sensitive.
B) It has a shelf life.
C) It is affected by high heat and humidity.
D) It should be stored in the darkroom.

Question 14

Which of the following radiographs gets its name from the Greek word that means around and the Latin word for apex that refers to the root tip?

A) Bitewing
B) Periapical
C) Occlusal
D) Panoramic

Question 15

Each of the following statements regarding duplication of radiographs is correct EXCEPT one. Which one is the EXCEPTION?

A) The emulsion side of duplicating film contains an antihalation coating.
B) The solarized emulsion records the copy of the image.
C) The emulsion side of duplicating film is placed against the original radiograph.
D) The antihalation coating prevents back-scattered light from re-exposing the film.

Question 16

The purpose of the embossed dot on the film packet is to:

A) identify which side of the film contains the emulsion.
B) determine if the film packet contains one or two films.
C) distinguish the patient's right from left on the developed radiograph.
D) locate the edge of the packet that should be positioned toward the apices.

Question 17

Each of the following affects film speed EXCEPT one. Which one is the EXCEPTION?

A) Emulsion thickness
B) Crystal size
C) Film packet size
D) Special dyes

Question 18

Dental film has a polyester base for the purpose of:

A) increasing the contrast and image quality.
B) providing support for the emulsion.
C) producing the latent (invisible) image.
D) preventing scatter radiation from exposing the film.

Question 19

Which of the following statements regarding extraoral film is FALSE?

A) It is used outside the mouth.
B) It comes individually wrapped in protective paper.
C) It is called a "screen film."
D) It uses intensifying screens.

Question 20

Which structure is most likely to absorb or stop more of the x-rays from reaching the film?

A) The enamel
B) The bone
C) The pulp
D) The soft tissue (cheek)

Question 21

Dental film emulsion is about 90 to 99 percent silver bromide and 1 to 10 percent silver iodide.

Question 22

The same film type used for exposing dental radiographs can be used to duplicate them.

Question 23

Film packets may contain one or two films.

Question 24

The purpose of the lead foil in the film packet is to absorb back-scattered x-rays to reduce film fog.

Question 25

Dental x-ray film is surrounded by a sheet of white paper inside the film packet.

Question 26

Intraoral film emulsion is composed of a gelatin and silver halide crystals.

Question 27

Duplicating film gets lighter the longer the exposure to light.

Question 28

Film used for dental radiography is very similar to photographic film.

Question 29

Bitewing radiographs image the entire tooth, from crown to root tip.

Question 30

During periapical radiograph film packet placement, the embossed dot should be positioned toward the apices of the teeth.

Question 31

The tab for opening the film packet is on the tube side of the packet.

Question 32

A pedodontic film is any film used to radiograph a child's teeth.

Question 33

The radiation exposure needed for extraoral film projections is higher than that needed for intraoral projections.

Question 34

Intraoral films are designed for use outside the oral cavity.

Question 35

The latent image is an image that is slow in its formation, especially when using slow speed film.

Question 36

The appearance of clear/white or radiopaque structures on the radiograph is a result of the developer step during film processing.

Question 37

A fast speed film requires more radiation exposure to record a diagnostic image.

Question 38

Pedodontic films are usually size #2 films.

Question 39

The white, unprinted side of an intraoral film packet is the back side.

Question 40

Film should be stored in its original packaging in an area shielded from radiation.

Question 41

What is the color of the tube side of the film packet?

Question 42

What type of film is needed to copy a dental radiograph?

Question 43

Extraoral radiographs require the use of a cassette and what else?

Question 44

What is placed in the film packet by the manufacturer to absorb scattered radiation?

Question 45

For what is the embossed dot in one corner of intraoral dental x-ray film used?

Question 46

Silver halide crystals suspended in gelatin form which part of dental x-ray film?

Question 47

The sensitivity of a given type of dental x-ray film is known as its what?

Question 48

Which side of the film packet faces the source of radiation?

Question 49

The invisible image present on a dental x-ray film that does not become visible until after processing is called what?

Question 50

What number is given to occlusal film to indicate its size?