Questions and Answers
In digital radiography, what replaces the intraoral film?
The sensor
What are the two fundamental techniques for intraoral digital radiography?
Direct digital imaging and indirect digital imaging
Which of the digital techniques requires scanning of image receptors?
In phosphor storage imaging (indirect digital imaging)
How does the use of film holders protect the patient from unnecessary radiation?
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What is the primary difference between a film holder and a digital sensor holder?
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What is the purpose of beam alignment?
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What are the five components of intraoral film?
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What is a latent image?
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How can you tell which side of the film is placed toward the tube?
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What number film is used for adult radiographs?
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What size film is used for occlusal radiographs?
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What are the two types of extraoral film cassettes?
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What is an intensifying screen?
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How does extraoral film react differently from intraoral film?
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When might it be necessary to duplicate x-rays?
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What precautions should be taken when storing x-ray film?
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How can you find the expiration date of a package?
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What are the five steps in processing dental radiographs?
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Which is the most widely used form of processing solution?
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How often should processing solutions be replenished?
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What is a safelight?
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What is the minimum distance between the safelight and the working area?
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What is the optimum temperature for the water in the manual processing tanks?
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What is the major advantage of automatic film processing?
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How often should the levels of solution in the automatic processor be checked?
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Are manual processing solutions and automatic processing solutions interchangeable?
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Study Notes
Digital Radiography
- The sensor replaces intraoral film in digital radiography.
- Two fundamental techniques for intraoral digital radiography are direct and indirect digital imaging.
- Indirect digital imaging requires a scanner to read information from phosphor storage plates.
Patient Protection
- Film holders protect patients from unnecessary radiation by keeping hands and fingers away from x-rays.
Film and Sensor Holders
- The primary difference between film holders and digital sensor holders is their size and shape.
Beam Alignment
- Beam alignment aids in positioning the position indicator device relative to the tooth and film.
Intraoral Film Components
- Intraoral film consists of:
- Film base made of clear cellulose acetate
- Adhesive layer attaching emulsion to the base
- Gelatin suspending microscopic silver crystals
- Silver halide crystals absorbing radiation
- Transparent coating protecting the emulsion
Image Characteristics
- A latent image is present on the film before processing.
- The white side of the film indicates placement toward the x-ray tube.
Film Sizes
- Size #2 film is used for adult radiographs.
- Size #4 film is utilized for occlusal radiographs.
Extraoral Film
- Two types of extraoral film cassettes are available: rigid and flexible.
- Extraoral film is exposed by light from screens, while intraoral film is directly exposed to radiation.
Film Duplication
- X-rays may need duplication for insurance claims or referrals to specialists.
Film Storage Precautions
- X-ray film should be stored away from light, heat, moisture, chemicals, and scatter radiation.
- The expiration date of radiographic film is labeled on the box's exterior.
Radiograph Processing Steps
- Five steps in processing dental radiographs include:
- Developing
- Rinsing
- Fixing
- Washing
- Drying
Processing Solutions
- The liquid concentrate is the most commonly used processing solution.
- Processing solutions need daily replenishment.
Safelight Information
- A safelight emits low-intensity light in the red-orange spectrum.
- Safelight should be positioned a minimum of 4 feet from the working area.
Processing Temperature
- The optimal temperature for water in manual processing tanks is 68 degrees Fahrenheit.
Automatic Film Processing
- The major advantage of automatic film processing is its reduced processing time.
- Solution levels in automatic processors should be checked daily.
- Manual and automatic processing solutions are not interchangeable.
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Description
This quiz covers essential concepts in digital radiography, including the techniques of digital imaging and the importance of patient protection during dental procedures. It also explores the components of intraoral films and the differences between film and sensor holders. Test your knowledge on these critical aspects of dental radiology.
