Chapter 7 : Dental X-ray Film

Question 1

Types of X-ray film

Answer 1

Intra oral film
extra oral film
occlusal film

Question 2

An intraoral x-ray film packet is made up of four separate items:

Answer 2

Xray film
paper film wrapper
lead foil sheet
Outer film wrapping

Question 3

protective sheet that covers the film and shields the film from light.

Answer 3

Paper film wrapper

Question 4

thin, transparent coating placed over the emulsion.

Answer 4

Protective layer

Question 5

is a flexible piece of polyester plastic 0.2 mm (200 microns) in thickness that is constructed to withstand heat, moisture, and chemical exposure

Answer 5

Film Base

Question 6

Thin layer of adhesive material that covers both side of the film base

Answer 6

Adhesive Layer

Question 7

a coating attached to both sides of the film base by the adhesive layer to give the film greater sensitivity to x-radiation.

Answer 7

film emulsion

Question 8

A chemical compound that is sensitive to radiation or light

Answer 8

Halide

Question 9

used to suspend and evenly disperse millions of microscopic silver halide crystals over the film base.

Answer 9

gelatin

Question 10

stored energy on the film that cannot be seen until processed

Answer 10

latent image formation

Question 11

The purpose of intra oral film packaging

Answer 11

to protect it from light and moisture

Question 12

Double emulsion film

Answer 12

x-ray

Question 13

why is a double emulsion film useful

Answer 13

requires less radiation exposure to produce an image

Question 14

The raised bump is used to determine film orientation

also determines left and right side of the patient

Answer 14

identification dot

Question 15

shields the film from backscatter (secondary radiation)

Answer 15

Lead foil sheet

Question 16

a soft-vinyl or paper wrapper that hermetically seals the film packet, protective paper, and lead foil sheet.

Answer 16

outer package wrapping

Question 17

purpose of outer package wrapping

Answer 17

protects film from exposure to oral fluids and light

Question 18

solid white and has a raised bump in one corner that corresponds to the identification dot on the x-ray film.

Answer 18

tube side

Question 19

has a flap used to open the film packet and remove the film before processing. Side that has colour

Answer 19

label side

Question 20

three types of intraoral film types

Answer 20

periapical
bite wing
occlusal

Question 21

used to examine the entire tooth (crown and root) and supporting bone

Answer 21

periapical film

Question 22

used to examine the crowns of both maxillary and mandibular teeth on one film

Answer 22

bite wing

Question 23

Which film is particularly useful in examining interproximal, or adjacent, tooth surfaces?

Answer 23

bite wing

Question 24

used for examination of large areas of the maxilla or the mandible

Answer 24

occlusal film

Question 25

Sizes of periapeical film

Answer 25

0,1,2 0: used for small childen 1: Examines anterior teeth in adults 2: Examines anterior and posterior teeth in adults

Question 26

the "standard film" size in periapical film

Answer 26

size 2

Question 27

Sizes of bitewing film

Answer 27

0,2,3 0: posterior teeth; small children 2;posterior teeth in OLDER children AND Adults 3: Shows all posterior teeth on one side of the radiograph

Question 28

the largest intraoral film and is almost four times as large as a standard size 2 periapical film.

Answer 28

Occlusal film

Question 29

amount of radiation required to produce a radiograph of standard density is called

Answer 29

Film speed

Question 30

reccomended speed film

Answer 30

F speed | film

Question 31

this film results in less radiation exposure of the patient and provides stable contrast characteristics.

Answer 31

F speed film

Question 32

shows a panoramic (wide) view of the maxilla and the mandible and surrounding structures on a single image

Answer 32

panoramic image

Question 33

exhibits the bony and soft tissue areas of the facial profile

Answer 33

cephalometric image

Question 34

sizes of extraoral film used in dentral radiography in inches

Answer 34

5x7 inch and 8x10 inch

Question 35

Two types of film in extraoral radiography

Answer 35

screen film | non screen film

Question 36

a film that requires the use of a screen for exposure

Answer 36

screen film

Question 37

where is the screen film placed

Answer 37

between two intensifying screens in a cassette

Question 38

this film is sensitive to flourescent light rather than ro direct exposure to radiation

Answer 38

screen film

Question 39

an extraoral film that does not require the use of screens for exposure.

Answer 39

Non-screen film

Question 40

this film is not reccommended for use in the dental office because it requires more radiation

Answer 40

Non- screen film

Question 41

Two items in extra oral film equipment

Answer 41

intensifying screen | cassette

Question 42

sandwiched between two intensifying screens of matching size and is secured in a cassette

Answer 42

screen film

Question 43

what color(s)does phosphors flourescence emit ?

Answer 43

blue or green

Question 44

what colour does that Conventional calcium tungstate emit

Answer 44

blue light

Question 45

colour that rare earth screens emit

Answer 45

green

Question 46

a special device that is used to hold the extraoral film and the intensifying screens

Answer 46

cassette

Question 47

lack of contact between screen and film results in _______

Answer 47

loss of image sharpness

Question 48

a type of photographic film used to make an identical copy of an intraoral or extraoral radiograph.

Answer 48

duplicating film

Question 49

how many sides does a duplicating film have ?

Answer 49

one

Question 50

The optimum temperature for film storage

Answer 50

50-70F

Question 51

optimum relative humidity level

Answer 51

30-50%