Radiation
_______ is a form of energy carries by waves or a stream of particles
radiation
0-10 degrees
The receptor is placed in the mouth ______ to the long axis of the tooth being radiographed
parallel
A ____ is a negative electrode that consists of a tungsten wire filament in a cup-shaped holder made of molybdenum
cathode
What did early pioneers in dental radiography die from?
Overexposure
The purpose of horizontal angulation
What is to open up contacts?
With vertical angulation, the central ray is _______ to the receptor and long axis of the tooth
perpendicular
A ______ ______ serves as a focal spot and converts bombarding electrons into x-ray photons
tungsten target
Is enamel radiopaque or radiolucent?
Radiopaque
Who discovered x-rays?
Roentgen
What is the most important thing to avoid as an operator?
primary beam
Magnification can occur if the PSP is placed as such.
If you increase the kVp, the radiographs will be _____
darker
How many mm of bone should be around each apex?
2-3mm
When did Roentgen discover x-rays?
1895
PPE required when exposing dental images
What are Gloves, safety glasses and mask?
The _____ technique can be used to expose PA images
bisecting
______ is the number of wavelengths that pass a certain point in a given length of time
frequency
Sharpness is increased if the tungsten target is ____
small
Who is credited with the first practical use of radiography?
C. Edmund Kells
ABHR
What do you need to do before and after donning and doffing gloves?
XCP
What is the instrument used for paralleling technique?
______ describes the number of electrons flowing through the conductor
Amperage
unsharpness