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Term 2 : Dental Radiography > Chapter 7 : Dental X-ray Film > Flashcards

Chapter 7 : Dental X-ray Film Flashcards

1
Q

Types of X-ray film

A

Intra oral film
extra oral film
occlusal film

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2
Q

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

A

Xray film
paper film wrapper
lead foil sheet
Outer film wrapping

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3
Q

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

A

Paper film wrapper

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4
Q

thin, transparent coating placed over the emulsion.

A

Protective layer

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5
Q

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

A

Film Base

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6
Q

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

A

Adhesive Layer

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7
Q

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

A

film emulsion

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8
Q

A chemical compound that is sensitive to radiation or light

A

Halide

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9
Q

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

A

gelatin

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10
Q

stored energy on the film that cannot be seen until processed

A

latent image formation

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11
Q

The purpose of intra oral film packaging

A

to protect it from light and moisture

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12
Q

Double emulsion film

A

x-ray

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13
Q

why is a double emulsion film useful

A

requires less radiation exposure to produce an image

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14
Q

The raised bump is used to determine film orientation

also determines left and right side of the patient

A

identification dot

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15
Q

shields the film from backscatter (secondary radiation)

A

Lead foil sheet

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16
Q

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

A

outer package wrapping

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17
Q

purpose of outer package wrapping

A

protects film from exposure to oral fluids and light

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18
Q

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

A

tube side

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19
Q

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

A

label side

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20
Q

three types of intraoral film types

A

periapical
bite wing
occlusal

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21
Q

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

A

periapical film

22
Q

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

A

bite wing

23
Q

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

A

bite wing

24
Q

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

A

occlusal film

25
Q

Sizes of periapeical film

A

0,1,2

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

26
Q

the “standard film” size in periapical film

A

size 2

27
Q

Sizes of bitewing film

A

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

28
Q

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

A

Occlusal film

29
Q

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

A

Film speed

30
Q

reccomended speed film

A

F speed

film

31
Q

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

A

F speed film

32
Q

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

A

panoramic image

33
Q

exhibits the bony and soft tissue areas of the facial profile

A

cephalometric image

34
Q

sizes of extraoral film used in dentral radiography in inches

A

5x7 inch and 8x10 inch

35
Q

Two types of film in extraoral radiography

A

screen film

non screen film

36
Q

a film that requires the use of a screen for exposure

A

screen film

37
Q

where is the screen film placed

A

between two intensifying screens in a cassette

38
Q

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

A

screen film

39
Q

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

A

Non-screen film

40
Q

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

A

Non- screen film

41
Q

Two items in extra oral film equipment

A

intensifying screen

cassette

42
Q

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

A

screen film

43
Q

what color(s)does phosphors flourescence emit ?

A

blue or green

44
Q

what colour does that Conventional calcium tungstate emit

A

blue light

45
Q

colour that rare earth screens emit

A

green

46
Q

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

A

cassette

47
Q

lack of contact between screen and film results in _______

A

loss of image sharpness

48
Q

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

A

duplicating film

49
Q

how many sides does a duplicating film have ?

A

one

50
Q

The optimum temperature for film storage

A

50-70F

51
Q

optimum relative humidity level

A

30-50%

Term 2 : Dental Radiography (29 decks)

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