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Dental Radiology Exam | Questions And Answers Latest {} A+ Graded | 100% Verified
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Dental Radiology Exam | Questions And Answers Latest {} A+ Graded | 100% Verified
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Dental Radiology Exam | Questions And Answers Latest {2024- 2025} A+ Graded | 100%Verified
3 requirements for NJ State Dental Radiology Technology exam - 18 years old
high school diploma or equivalency (GED)
NJ State approved 45 hour course including required hours of clinical practice
Who discovered x-rays? - Dr. Wilhelm Conrad Roentgen
aka: Wilhelm VonRoentgen
When was x-rays discovered? - 1895
Who was Dr. Otto Walkoff? - German dentist in 1896; first to use x-rays for dental
Who was Dr. Edmund Kells? - first American dentist to use x-rays
Who was Cyzinski? - developed the bisecting angle technique
What are x-rays? - electromagnetic radiation (EMR)
What determines the penetrating power of various EMR? - wavelength
What do medical EMR rays fall under? - gamma rays
Principle characteristics of EMR(4): - ~travels at speed of light(186,000 miles/second)
~pure energy- no mass or weight
~travels through space in wave motions
~electric and magnetic fields surround them as they travel through space
, What are wavelengths? - distance between successive peaks along a wave
What is frequency? - oscillations emitted per second
What are oscillations? - number of wavelengths
shorter wavelengths have - higher frequencies and more penetrating rays
What are red rays? - Longest wavelengths in visible spectrum
What are violet rays? - shorter wavelengths
What are invisible rays? - shortest wavelength, beyond the visible threshold
ex: x-rays
The angstrom unit is used to measure... - wavelength
one hundred millionth of a centimeter
x-rays used in dentistry fall between what angstrom units - .5-1 angstrom unit
What is hard radiation? - x-rays of shorter wavelength, used in dentistry
What is soft radiation? - x-rays of longer wavelength, can't penetrate tissues
When is EMR produced? - when electrons strike a metal target in a vacuum tube
Cathode - negatively charged component which contains a filament wire coil made of tungsten metal
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