Deck 11: Film Processing Techniques

Question 1

The coin test is an easy and reliable way to check the:

A)safelight.
B)film speed.
C)density of the radiographic image.
D)strength of the developer solution.

Answer 1

safelight.

Question 2

Cell phones should not be used in the darkroom because:

A)the phone could be dropped into the processing solutions.
B)talking on the phone while processing radiographs is confusing.
C)the illumination from the phone could cause film fog or expose the film.
D)the operator may inadvertently open the darkroom door while processing.

Answer 2

the illumination from the phone could cause film fog or expose the film.

Question 3

The typical wattage of a bulb used in safelighting is 60 to 75 watts.The safelight should be placed 3 to 4 feet from the working area.

A)Both statements are true.
B)Both statements are false.
C)The first statement is true,the second statement is false.
D)The first statement is false,the second statement is true.

Answer 3

The first statement is false,the second statement is true.

Question 4

Torn emulsion is usually the result of:

A)improper fixing.
B)excessive drying.
C)inadequate rinsing.
D)drying films in contact.

Question 5

A well-designed darkroom has how many different light sources?

A)3
B)4
C)5
D)10

Question 6

If the silver halide crystals in the film emulsion are energized,more silver precipitates to give what kind of an appearance on an image.

A)Light
B)Clear
C)Radiopaque
D)Radiolucent

Question 7

Identify the optimum time and temperature for films to remain in the developer solution:

A)80° F for minutes.
B)75° F for 3 minutes.
C)70° F for 4 minutes.
D)68° F for minutes.

Question 8

Identify the best way to check for light leaks in the darkroom:

A)paint the walls black.
B)process several films and check for film fog.
C)stand inside the darkroom in complete darkness.
D)check the tightness of the lids for the processing tanks.

Question 9

Defective film hangers should be disposed of because they can cause indentations on the film.

Question 10

Light leaks in the darkroom will cause:

A)streaks on film.
B)fogging of film.
C)overdevelopment of film.
D)underdevelopment of film.

Question 11

A clear film can be caused by no exposure or prolonged fixing.

Question 12

All of the following affect the life of processing solutions EXCEPT one.Which one is the EXCEPTION?

A)The type of safelight
B)The age of the solutions
C)The size of the films processed
D)The number of films processed

Question 13

In manual processing,the thermometer should be kept in which solution?

A)Fixer
B)Developer
C)Water bath
D)Any of the above

Question 14

The minimum size for a darkroom should be:

A)2 $\times$ 2 feet.
B)4 $\times$ 4 feet.
C)6 $\times$ 6 feet.
D)6 $\times$ 8 feet.

Question 15

All of the following components are important for a darkroom EXCEPT one.Which one is the EXCEPTION?

A)It should be light-tight.
B)It should have room for processing tanks.
C)It should be connected to a dental laboratory space.
D)It should have safe-light and overhead white light sources.

Question 16

The concentrated solution that is added to the processing solutions to compensate for oxidation and loss of solution volume is called:

A)acidifier.
B)oxidizer.
C)hardener.
D)replenisher.

Question 17

For permanent fixation,if the developing time is 5 minutes,then the fixing time should be approximately 10 minutes.

Question 18

Under typical working conditions,the developer and fixer solutions should be changed:

A)at least every other day.
B)once each week.
C)every 2 to 3 weeks.
D)every 2 to 3 months.

Question 19

Panoramic films are more sensitive to darkroom light than intraoral film.

Question 20

The protective coating on the emulsion is softened by the fixer and hardened by the developer.