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Dental Radiography > 8,18,25 > Flashcards

8,18,25 Flashcards

1
Q

Developer

A

Purpose of the developer is convert the exposed silver halide crystals into metallic silver grains ph is alkaline basic

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2
Q

What are two chemical in the developer

A

Metol/elon-builds up gray

Hydroquine-builds up black tones and contrast

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3
Q

Four functions in the developer

A

Developing agent
Preservative
Activator
Restrainer

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4
Q

Activator

A

Sodium carbonate

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5
Q

Restrainer

A

Potassium sulfite -keeps reducing agents from developing unexposed silver halide

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6
Q

Perservative

A

Sodium sulfite- prevent radio oxidation

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7
Q

5 steps to manual processing

A 
Developing solution 
Rinsing 
Fixing 
Washing 
Drying
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8
Q

Developing solution temp and

A

68-70 degrees develop for 5 mins

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9
Q

Rinsing purpose

A

Remove alkaline developer before placing film in the fixer 30 seconds

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10
Q

Fixing purpose

A

Stops further development establishing

  • removes unexposed underdeveloped silver crystals
  • hardens the emulsion
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11
Q

Fixing agent

A

Ammonium thiosulfate - clears away unexposed silver halide

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12
Q

Acidifier

A

Acetic or sulfuric acid -stops development by neutralizing developer

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13
Q

Harder agent

A

Aluminum chloride or sulfide shrinks and hardens emulsion

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14
Q

Preservative

A

Sodium sulfite -maintains chemical balance

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15
Q

Darkroom

A

4ft away 15 watt bulb

Chemicals stirred and replenished daily

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16
Q

Manual chemical replenishment

A

Developer- 6oz added to am

Fixer- 3oz may need to remove some chemical

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17
Q

Automatic processing

A

Developer
Fixer
Wash

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18
Q

Temp and maintenance for automatic processing

A

For every 30- film 6-8 oz

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19
Q 
Which term best describes the process by which the laten image  visible 
Reticulation 
reduction 
activation
 preservation
A

B

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20
Q

Which of these is the correct processing sequence

A

Develop rinse fix wash dry

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21
Q

The basic constituents of the developer solution are

A

Reducing agent, activator, preservation restrainer

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22
Q

During which step of the processing procedure are the expose silver halide crystals reduced to metallic silver

A

Developing

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23
Q

Which ingredient remove the unexposed undeveloped silver halide crystals from the film emulsion

A

Sodium thiosulfate p

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24
Q

Which ingredient causes the emulsion to soften and swell

A

Activator

25
Q

Which ingredient Hardens the emulsion

A

Potassium alum

26
Q

Chemically the developer used in an automatic processor causes more _____ then developer to use for manual processing

A

Hardener

27
Q

Each of the following should be considered when setting up an ideal darkroom except

A

Black walls

28
Q

What to the following colors of the safe light filters is safer processing all films speeds

A

Red

29
Q

What is the minimum safe distance to position the safe light above the work area in the darkroom

A

4ft

30
Q

What is the The appearance of the radiographic image if they film is exposed to a Safelite to long

A

Fogged

31
Q

Which of these is considered a disadvantage of manual processing over automatic processing

A

Time to long

32
Q

A thermometer is used for Manual processing to determine the temperature of the

A

Devl solution

33
Q

Each of the following is necessary and required for manual processing except

A

Film dryer

34
Q

What is the ideal temperature for processing film manually

A

68

35
Q

A film maybe safely exposed to WhiteLight for a wet reading

A

Fixing

36
Q

It’s the following is true regarding rapid film processing except

A

Produces archival quality radiographs

37
Q

Each of the following is an advantage of automatic processing of remaining processing except

A

Less maintenance

38
Q

Which pricing method requires the most maintenance in the strictest adherence to regular replenishment and cleaning

A

Automatic

39
Q

Flim processing

A

Is a series of steps that converts the invisible latent image on the dental x-Ray film into a visible permanent image called a radiograph

40
Q

Periodontal disease

A

Are diseases that affect those soft tissues and bone around the bone loss

41
Q

Gingivitis

A

Inflammation of the gingiva in the mid to soft tissue no bone loss

42
Q

Horizontal bone loss

A

Describes how I lost around adjacent teeth in the region

43
Q

Vertical bone loss

A

And a vertical direction rather resorption of one tooth root sharing the interdental septum

44
Q

Amalgam

A

Probably come toward crown margins

45
Q

Calculus

A

Her name plaque appears slightly radiopaque

46
Q

Occlusal trauma

A

Does not cause. Perio disease

47
Q

Herring bone pattern

A

Film place in the mouth backwards and then exposed

48
Q

What is the appropriate corrective action for a perispical radiograph of the maxillary molar region that’s not images third molar

A

Move the image receptor back further in the oral cavity

49
Q

When using the bisecting technique which of these errors results from in inadequate vertical angulation

A

Elongation

50
Q

Overlap teeth contact rendors a bitewing radiographs and diagnostic the overlap appears more severe and anterior region one correct action is needed

A

Shift the horizontal angulation toward the mesial

51
Q

Which of these conditions results from a failure to direct the central ray tour the middle of the image receptor

A

Concut

52
Q 
Each of the following will result in radiographs that are too light except
A) hot developer solution 
B)old expired film 
C) underexposed 
D) underdeveloped
A

A

53
Q

It’s the final result in radiographs that are blank clear except
No exposure to x-ray
placing films in the mixer
extended time in warm water rinse accidental white light exposure

A

D

54
Q

If. Two films become overlapped together because they were inserted into the automatic processor to quickly what is the result

A

Green film

55
Q

Which of these indicates that a film is not properly wash

A

Film turns brown

56
Q 
Each of the following result and black artifacts and a radiograph except
Sadistic electricity 
bent film 
glove powder 
fixer splash
A

D

57
Q 
Static electricity appears radio graphically as
 black thin lines 
 starburst
 dots 
any of the above
A

D

58
Q 
It's the following is a cause of film fog except
Exposure to scatter radiation 
use of old expired 
film double exposing 
the film chemical fumes contamination
A

C

Dental Radiography (4 decks)

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