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Dental Radiography > 8,18,25 > Flashcards

8,18,25 Flashcards

(58 cards)

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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

25
Which ingredient Hardens the emulsion
Potassium alum
26
Chemically the developer used in an automatic processor causes more _____ then developer to use for manual processing
Hardener
27
Each of the following should be considered when setting up an ideal darkroom except
Black walls
28
What to the following colors of the safe light filters is safer processing all films speeds
Red
29
What is the minimum safe distance to position the safe light above the work area in the darkroom
4ft
30
What is the The appearance of the radiographic image if they film is exposed to a Safelite to long
Fogged
31
Which of these is considered a disadvantage of manual processing over automatic processing
Time to long
32
A thermometer is used for Manual processing to determine the temperature of the
Devl solution
33
Each of the following is necessary and required for manual processing except
Film dryer
34
What is the ideal temperature for processing film manually
68
35
A film maybe safely exposed to WhiteLight for a wet reading
Fixing
36
It's the following is true regarding rapid film processing except
Produces archival quality radiographs
37
Each of the following is an advantage of automatic processing of remaining processing except
Less maintenance
38
Which pricing method requires the most maintenance in the strictest adherence to regular replenishment and cleaning
Automatic
39
Flim processing
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
Periodontal disease
Are diseases that affect those soft tissues and bone around the bone loss
41
Gingivitis
Inflammation of the gingiva in the mid to soft tissue no bone loss
42
Horizontal bone loss
Describes how I lost around adjacent teeth in the region
43
Vertical bone loss
And a vertical direction rather resorption of one tooth root sharing the interdental septum
44
Amalgam
Probably come toward crown margins
45
Calculus
Her name plaque appears slightly radiopaque
46
Occlusal trauma
Does not cause. Perio disease
47
Herring bone pattern
Film place in the mouth backwards and then exposed
48
What is the appropriate corrective action for a perispical radiograph of the maxillary molar region that's not images third molar
Move the image receptor back further in the oral cavity
49
When using the bisecting technique which of these errors results from in inadequate vertical angulation
Elongation
50
Overlap teeth contact rendors a bitewing radiographs and diagnostic the overlap appears more severe and anterior region one correct action is needed
Shift the horizontal angulation toward the mesial
51
Which of these conditions results from a failure to direct the central ray tour the middle of the image receptor
Concut
52
``` 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
53
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
D
54
If. Two films become overlapped together because they were inserted into the automatic processor to quickly what is the result
Green film
55
Which of these indicates that a film is not properly wash
Film turns brown
56
``` Each of the following result and black artifacts and a radiograph except Sadistic electricity bent film glove powder fixer splash ```
D
57
``` Static electricity appears radio graphically as black thin lines starburst dots any of the above ```
D
58
``` 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 ```
C

Dental Radiography (4 decks)

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