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RHS 116 Exam Study Guide Questions With 100% Correct Answers

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What is the most common error with endo film? - ️️Apicies not present What are long wavelengths or soft radiation? - ️️Low frequency, low energy, and low penetrating power What are short wavelengths or hard radiation? - ️️High frequency, high energy, and high penetrating power. What are the advantages of Digital Imaging? - ️️No film or processing solution, less exposure to the patient What can affect density? - ️️Several factors can affect density including; -The distance of the X-ray tube to the patient -patients tissue thickness -and the amount of radiation reaching the film. What chemical in the fixer that clears the unexposed silver halide crystals? - ️️Ammonium Thiosulfate What controls density? - ️️density is controlled by mA, developing techniques, kV, & light leak What determines the speed of film? - ️️size of silver halide crystals What does Milliamperage affect? - ️️Milliamperage affects the film density or the overall darkness of an image

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RHS 116 Exam Study Guide Questions

What is the most common error with endo film? - ✔ ✔ Apicies not
present

What are long wavelengths or soft radiation? - ✔ ✔ Low frequency,
low energy, and low penetrating power

What are short wavelengths or hard radiation? - ✔ ✔ High
frequency, high energy, and high penetrating power.

What are the advantages of Digital Imaging? - ✔ ✔ No film or
processing solution, less exposure to the patient

What can affect density? - ✔ ✔ Several factors can affect density
including;
-The distance of the X-ray tube to the patient
-patients tissue thickness
-and the amount of radiation reaching the film.
What chemical in the fixer that clears the unexposed silver halide
crystals? - ✔ ✔ Ammonium Thiosulfate

What controls density? - ✔ ✔ density is controlled by mA,
developing techniques, kV, & light leak

What determines the speed of film? - ✔ ✔ size of silver halide
crystals

What does Milliamperage affect? - ✔ ✔ Milliamperage affects the
film density or the overall darkness of an image

, What is the primary diagnostic use of a bitewing radiograph? - ✔ ✔
Check for interproximal decay and crestal bone levels

What is the primary use of occlusal dental radiographs? - ✔ ✔
Locate foreign bodies

What is the range of kVp for dental units? - ✔ ✔ 70kVp to 90kVp

What is the recommended size of the lead collimator? - ✔ ✔ 2.75
inches
What is the required aluminum filter thickness for units below 70kVp? -
✔ ✔ 1.5 mm

What is the required thickness for units over 70 kVp? - ✔ ✔ 2.5mm

What is the transfer of energy as it passes through matter called? - ✔
✔ Absorption

What material is the collimator made of? - ✔ ✔ Lead

What primary influence does kVp have? - ✔ ✔ kVp influences the
image contrast the most

What range of mA do dental units use? - ✔ ✔ 10-15 mA

Newer units can be set at 7 mA for all x-rays

What term describes the loss of electrons from a substance? - ✔ ✔
Ionization


Depth of contrast comes from what? - ✔ ✔ kVp

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