and Answers 100% Pass
The uses of dental radiographs may include:
a. detection of dental caries in early stages
b. identification of early stages of bone loss
c. evaluations of growth and development
d. all of the above - ✔✔all of the above
Any exposure to radiation, no matter how small, has the potential to cause harmful
biologic changes in the operator and the patient (true/false) - ✔✔true
The x-ray was discovered on November 8, 1895 by:
a. John Greenwood
b. Wilhelm Conrad Roentgen
c. GV Black
d. Edmund Kells - ✔✔Wilhelm Conrad Roentgen
The dentist who is credited with the first practical use of radiographs in dentistry in
1896 is
a. Wilhelm Conrad Roentgen
b. GV Black
c. C. Edmund Kells
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,d. John Greenwood - ✔✔C. Edmund Kells
anything that occupies space and has a form or shape is:
a. energy
b. solid
c. matter
d. a photon - ✔✔matter
the parts of an atom include which of the following?
a. nucleus
b. electrons
c. protons
d. all of the above - ✔✔all of the above
In dentistry, the ____ wavelengths of the x-rays, the greater their energy and
usefulness
a. shorter
b. longer
c. more ionized
d. straighter - ✔✔shorter
the main components of a dental x-ray machine include which of the following:
a. tubehead
b. extension arm
c. control panel
d. both a and c
e. all of the above - ✔✔all of the above
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, the heart of the x-ray generating system is the:
a. x-ray tube
b. insulating oil
c. transformer
d. position indicator device - ✔✔x-ray tube
x-radiation can be described as:
a. primary radiation
b. secondary radiation
c. scatter radiation
d. all of the above - ✔✔all of the above
the characteristics of the x-ray beam that determine the contrast, density, and image
detail include which of the following?
a. quality
b. quantity
c. intensity
d. all of the above - ✔✔all of the above
the term ______ is used to describe areas on the radiograph that appear dark; ______
is the term used to describe areas that appear white or grey
a. radiopaque; radiolucent
b. radiolucent; radiopaque
c. density; contrast
d. contrast; density - ✔✔radiolucent; radiopaque
the range of shades of gray between black and white on a radiograph is called
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