45 Questions
Which of the following is the purpose of film processing in dental radiography?
To convert the latent image into a visible image
What happens to the halide portion of the silver halide crystals during film development?
It is removed in a process known as reduction
Which areas on a dental radiograph appear dark (radiolucent)?
Areas where x-rays were able to pass through to the film
Which of the following is used to hold films during manual processing?
Film Hangers
What is the purpose of a stirring rod/paddle in film processing?
To mix the developer and fixer solutions
What happens when the developer solution becomes weakened or exhausted?
The film becomes underdeveloped
What is the purpose of a safe-light in the darkroom?
To prevent film fogging
Which chemical is responsible for generating the black shades and sharp contrast in a radiograph?
Hydroquinone
What is the purpose of the preservative in the developer solution?
To prevent oxidation of the developer solution
What is the purpose of the fixer solution in the manual processing of radiographs?
To remove all unexposed and undeveloped silver halide crystals
What is the purpose of the light-tight lid on the processing tank?
To protect the solutions from oxidation and evaporation
Which type of film processing technique consists of 4 steps: development, fixing, washing, and drying?
Automatic processing
What is the function of the roller film transporter in the automatic processor?
To move the film through the different compartments
What happens if the fixer in the automatic processor is exhausted?
The films will have reduced density and contrast and will be yellow-brown
What is the main advantage of automatic processing compared to manual processing?
Less processing time
Which of the following is the purpose of the developer solution in film processing?
To convert the latent image into a visible image
What is the purpose of the fixer solution in film processing?
To remove the unexposed silver halide crystals
What happens when the developer solution becomes weakened or exhausted?
The film does not develop properly
Which type of film processing technique consists of 5 steps?
Manual processing
What is the purpose of the rinsing step in manual film processing?
To stop the development process
How often should manual processing solutions (developer and fixer) be replenished or changed?
Every day
What is the primary function of the roller film transporter in the automatic processor?
To move the film through the developer to the fixer
Which of the following is a possible cause of underdeveloped film in both automatic and manual processing?
Inaccurate thermometer
What is the purpose of a film hanger in manual processing?
To mix the developer and fixer solutions
What is the purpose of a safelight in the darkroom?
To remove short wavelengths in the blue-green spectrum
How can the developer solution become weakened or exhausted?
All of the above
Which two chemicals are responsible for producing films that are black, white, and shades of gray?
Hydroquinone and elon
What is the purpose of the preservative in the developer solution?
To prevent the developer solution from oxidizing
What is the purpose of the accelerator in the developer solution?
To activate the developing agents
What is the purpose of the fixing agent in the fixer solution?
To remove all unexposed, undeveloped silver halide crystals
Which of the following is the purpose of the developer solution in film processing?
To convert the latent image into a visible image
What is the purpose of the fixer solution in film processing?
To remove unexposed silver halide crystals
What happens to the halide portion of the silver halide crystals during film development?
It is converted into a black, metallic silver appearance
Which of the following is a disadvantage of automatic processing compared to manual processing?
Automatic processing produces lower quality radiographs than manual processing.
What is the purpose of the rinsing step in manual film processing?
To remove the developer solution and stop the development process.
How often should automatic processing solutions be replaced?
Every 2-6 weeks, depending on the number of films processed.
What is the purpose of the film recovery slot in the automatic processor?
To remove dry, processed film from the processor.
Which of the following is the purpose of the accelerator in the developer solution?
To activate the developing agents
What is the purpose of the hardening agent in the fixer solution?
To harden and shrink the gelatin in the film emulsion
What is the purpose of the preservative in the fixer solution?
To prevent the fixing agent from deteriorating
What is the purpose of the acidifier in the fixer solution?
To neutralize the alkaline developer
Which of the following is a possible cause of film fogging in the darkroom?
Using a high-intensity safelight
What is the purpose of a film duplicator in radiography?
To duplicate radiographs for patient records
Which of the following is a possible cause of underdeveloped film in both manual and automatic processing?
High developer temperature
What is the purpose of a processing tank in film processing?
To remove mineral salts and carbonate deposits
Test your knowledge on the properties and effects of hydroquinone and elon in film development. Learn about their temperature sensitivity and the shades they produce in black and white films. Discover how their combination creates distinct contrast in radiographs.
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