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Dental Radiology: The Dental X-ray Machine Questions and Answers 100% Correct | Updated
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Dental Radiology: The Dental X-ray Machine Questions and Answers 100% Correct | Updated
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Dental Radiology: The Dental X-ray MachineQuestions and Answers 100% Correct |
Updated 2024-2025
control panel - ANSWER The portion of the x-ray unit that contains the master
switch, the indicator light, the selector buttons, and the exposure button.
tube head - ANSWER The part of the x-ray unit that contains the x-ray tube, the
high-voltage and low-voltage transformers, and insulating oil
supporting/extension arm - ANSWER A
Five major controls on the control panel - ANSWER - line switch (on/off switch)
- milliampere selector
- kilovoltage selector
- timer
- exposure button
milliampere (mA) - ANSWER measures the amount of current passing through
wires; determines the number of electrons therefore the amount of x-rays
produced
High mA - ANSWER more e- strike target creating more x-rays
Low mA - ANSWER fewer e- strike target creating fewer x-rays
, Kilovolt Peak (kVp) - ANSWER determines the speed of electrons therefore
penetrating ability (penetrating power)
- stabilizes incoming electricity (voltage)
- adjusts the voltage flowing to the tube head
cathode - ANSWER a negatively charged electrode that provides a source of
electrons composed of:
- filament wire
- focusing cup
Anode - ANSWER Positive electrode with a tungsten target and focal spot
Components of tubehead - ANSWER - cathode
- anode
- transformer
- aluminum filter
- lead collimator
- PID/BID
transformers - ANSWER Electromagnetic device for changing the current
coming into dental x-ray machine
- step-down= low voltage
- step-up= high voltage
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