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Dental radiology | 67 QUESTIONS AND ANSWERS 100% CORRECT | NEW UPDATE
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Dental radiology | 67 QUESTIONS AND ANSWERS 100% CORRECT | NEW UPDATE
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Dental radiology | 67 QUESTIONS AND ANSWERS100% CORRECT | NEW UPDATE 2024-2025
Who discovered x-rays - ANSWER wilhelm Conrad Roentgen 1895
Who made the first dental radiograph - ANSWER Otto walkoff
Dr. C. Edmund Kells - ANSWER Credited with the first practical use of
radiograph in dentistry
Energy - ANSWER Defined as the ability to do work
Matter - ANSWER Anything that occupies space and has form or shape
Electrons - ANSWER Are tiny negatively charged particles that have very little
mass
Ionization - ANSWER Is the process by which electrons are removed from the
orbital shells of electrical stable Atoms through collisions with x-ray photon
shorter wavelength - ANSWER High frequency
High energy of short wavelengths - ANSWER Are able to penetrate matter
more easily
Long wavelength - ANSWER Low frequency
, Three primary components of an x-ray machine - ANSWER The tubehead, An
extension arm, The control panel
Lead collimator - ANSWER A metal disc with a small opening in the center to
control the size and shape of the x-ray beam as it leaves the tubehead
Insulating oil & tungsten target - ANSWER Two things that remove heat
Control panel of an x-ray unit contains - ANSWER The master switch, Indicator
light, Exposure button, Control devices (time,milliamperage[mA]selector, and
kilovoltage [kV]selector)
Cathode - ANSWER Electrons are generated in the x-ray tube at the cathode
the Anode - ANSWER Is the target for the electrons and It is composed of
tungsten target a small block of something that is embedded in the large copper
stem.
The copper around the target - ANSWER conducts the heat a way from the
target, thus reducing wear and tear on the target
Rectangular PID - ANSWER Limits the size of the beam
The long 12 to 16 inch PID - ANSWER More effective in reducing exposure To
the patient than a short 8 inch PID
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