Processing of the X-ray Film

Front

What is the primary recording medium used in dental radiography?

Back

Radiographic film.

Front

What are the objectives of processing X-ray films?

Back

1. Identify the diagnostic quality of dental radiographs. 2. List and identify the step by step procedure in manual processing of x-ray films. 3. Identify the procedures for film processing and film mounting. 4. Demonstrate the steps of automatic film processing. 5. Compare manual and automatic processing methods, stating advantages and disadvantages of each.

Front

What is the purpose of the developer in film processing?

Back

The developer converts the exposed silver halide crystals into metallic silver grains that can be visualized.

Front

What is the purpose of the fixer in film processing?

Back

The fixer removes underdeveloped, unexposed Ag bromide crystals.

Front

What are the five steps in manual film processing?

Back

1. Developing 2. Rinsing 3. Fixing 4. Rinsing 5. Drying

Front

What is the dilution ratio for the developer?

Back

1:4 ratio with water.

Front

What is the effect of overdevelopment in film processing?

Back

Dark films are usually the result of overdevelopment, not underdevelopment.

Front

What are the constituents of developer solutions and their functions?

Back

1. Phenidone – brings out the image. 2. Hydroquinone – builds the density and contrast in the image. 3. Elon - brings out the gray shades of the image. 4. Sodium Sulphite - reduces oxidation, helps protect developer from being oxidized. 5. Potassium Carbonate - activates developing agents.

Front

What is the purpose of rinsing in film processing?

Back

To dilute the developer, slow the development process, and remove the alkali activator.

Front

What is the action of the fixer in film processing?

Back

To remove (dissolve) the underdeveloped Ag halide crystals from the emulsion.