1. In digital radiography, what replaces the intraoral film?
image receptor, Sensor or phosphor plate
2. What are the two fundamental techniques for intraoral digital radiography?
Direct imaging. Indirect imaging
3. Which of the digital techniques requires scanning of image receptors?
phosphor storage plate.
4. How does the use of positioning instruments protect the patient from unnecessary radiation?
keeps the patients fingers from being exposed.
5. What is the primary difference between a film holder and a digital sensor holder?
Size and shape of the holder
6. What is the purpose of a beam alignment device?
is to assist in the positioning of the position indicating device (PID) in relation to the tooth and film.
7. What are the five components of intraoral film?
1. A film base made of clear cellulose acetate
2.A thin adhesive later that attaches the emulsion to the film base
3.A gelatin that suspends the emulsion of microscopic silver crystals over the film base
4.Silver halide crystals that absorb radiation
5.A thin transparent coating that protects the emulsion
8. What is a latent image?
The invisible image on the x-ray film after exposure but before processing.
8. How can you tell which side of the film is placed toward the tube?
The white side of the film is placed toward the tube.
9. What number film is used for adult radiographs?
Size #2
10. What size film is used for occlusal radiographs?
Size 4
11. What are the two types of extraoral film cassettes?
rigid and flexible
12. What is an intensifying screen?
Converts radiographic energy into visible light.
13. How does extraoral film react differently from intraoral film?
The light from the screen exposes the extraoral film, the intraoral film is exposed directly by radiation
14. When might it be necessary to duplicate x-rays?
For the insurance company or for referral of patients to a specialist or another dental office
