Chapter 38
6 feet
Never stand closer than ___ feet from the x-ray unit during an exposure, unless you are behind a barrier.
Protective sheet and shields it from light
What are two purposes of the black paper inside a film packets?
Malpractice
What is professional negligence?
Bitewing
What is the type of image used for interproximal examination?
"Skinny"
How will teeth appear if not position in the bite-block, and too far anterior?
Divergence
What is termed "spreading out"? Such as as the radiation beam spreads out?
50 to 70 degrees
What is the optimum temperature for film storage?
Artifact
What is a blemish or unintended radiographic image that is not present on the actual structure?
Paralleling Technique
What technique is recommended because it provides the most accurate image with the least amount of radiation exposure to the patient?
Frankfort Plane
What plane passes through the floor of the orbit and the external auditory meatus?
bromide faster
The size of the silver _____ crystals on the film is the main factor in determining the film speed: the larger the crystals, the ______ the film.
30 intraoral films per day
What is the "normal" amount of intraoral films processed a day?
Phosphor Storage Plates (PSP's)
What are used with digital radiography instead of a rigid sensor?
Horizontal Technique
What remains the same when taking either paralleling or bisecting technique?
Reverse Smile Line (Curved Downward)
What will appear if the frankfort plane is incorrect? (Chin too high or tipped upward)
Ampere (A)
What is the unit of measurement used to describe the number of electrons, or current flowing through the cathode filament.
F-speed
What is the fastest type of analog film used now?
Disclosure
What is the process of informing the patient about the nature and purpose of dental radiographs?
Central Ray
In the paralleling technique; what is perpendicular to the tooth and the film sensor?
Grid
What is a device that is used to reduce the amount of scatter radiation that reached extraoral film during exposure?
H.R. Raper
Who introduced the bitewing technique?
Endoray
Respondeat Superior
What doctrine is known as meaning "the employer is responsible for the employee?
Placement, Position, Vertical Angulation, Horizontal angulation, and Central Ray.
What are the five basic rules to apply in the paralleling technique?
Focal Trough
What is known as the image layer; is a three-dimensional (3D) horse-shoe shaped zone?