Test Bank For Radiologic (x
rays discovery) Practice test
Chapter 1-40 [Updated 2024]
questions with well detailed
correct answers
Who discovered x-rays - ANSWERS -Wilhelm Conran Roentgen
When were x-rays discovered - ANSWERS -1895
X-rays travel at what speed? - ANSWERS -186,000 miles per second.
What is cross-contamination? - ANSWERS -The spreading of microorganisms from
one person to another.
Blurred radiographs may result from? - ANSWERS -Movement during exposure
Radiographs that show only the crowns of the teeth are? - ANSWERS -
Interproximal/BWX
What is the fastest film type? - ANSWERS -F
Extraoral films are best used for? - ANSWERS -Orthodontics
What is a type of an extraoral film? - ANSWERS -Panoramic film
Which size film is the so-called "pedo" film? - ANSWERS -0
What do the strongest penetrating x-rays contain? - ANSWERS -Short wavelengths
Which size film would be used for adult Periapical x-rays? - ANSWERS -2
Bitewing films are not taken on? - ANSWERS -Edentulous patients
, What type of x-ray film is not considered intraoral? - ANSWERS -Panoramic
By changing to ultra fast film, which will not sacrifice diagnostic value, exposure to the
patient will be reduced as much as - ANSWERS -85 %
What is used to avoid gonadal exposure while taking x-rays? - ANSWERS -A lead
apron
Filtration of the x-ray beam protects the patient by? - ANSWERS -eliminating long
wavelengths from the x-ray beam
The exposure to the patient may be reduced as much as 85% by? - ANSWERS -using
ultra fast film
Which of these materials are used to filter out the long wavelengths from the central
ray? - ANSWERS -Aluminum
What is the minimum required size of the lead apron to protect the reproductive
organs/gonadal region? - ANSWERS -1 foot by 2 feet
If the dentist thinks an x-ray is necessary for proper treatment - ANSWERS -there
should be no hesitation about taking the x-ray
What is the embossed dot on an x-ray? - ANSWERS -To help determine left from right
when mounting
A radiolucent structure appears? - ANSWERS -Black
A radiopaque structure appears? - ANSWERS -White, light, and shades of gray
Radiolucent or Radiopaque: Periodontal ligament - ANSWERS -Radiolucent
Radiolucent or Radiopaque: Maxillary Sinus - ANSWERS -Radiolucent
Which PPE should be worn while taking
x-rays? - ANSWERS -Glasses, gown, mask, gloves
What does the grain size/crystals on a film do to the speed? - ANSWERS -The fastest
films have the largest grains
The use of film badges serves all of these purposes except: - ANSWERS -Evaluate
exposure patient receives
Are Developer and fixer solutions sterilizing agents? - ANSWERS -No
X-rays that expose the film in the mouth are: - ANSWERS -High energy
rays discovery) Practice test
Chapter 1-40 [Updated 2024]
questions with well detailed
correct answers
Who discovered x-rays - ANSWERS -Wilhelm Conran Roentgen
When were x-rays discovered - ANSWERS -1895
X-rays travel at what speed? - ANSWERS -186,000 miles per second.
What is cross-contamination? - ANSWERS -The spreading of microorganisms from
one person to another.
Blurred radiographs may result from? - ANSWERS -Movement during exposure
Radiographs that show only the crowns of the teeth are? - ANSWERS -
Interproximal/BWX
What is the fastest film type? - ANSWERS -F
Extraoral films are best used for? - ANSWERS -Orthodontics
What is a type of an extraoral film? - ANSWERS -Panoramic film
Which size film is the so-called "pedo" film? - ANSWERS -0
What do the strongest penetrating x-rays contain? - ANSWERS -Short wavelengths
Which size film would be used for adult Periapical x-rays? - ANSWERS -2
Bitewing films are not taken on? - ANSWERS -Edentulous patients
, What type of x-ray film is not considered intraoral? - ANSWERS -Panoramic
By changing to ultra fast film, which will not sacrifice diagnostic value, exposure to the
patient will be reduced as much as - ANSWERS -85 %
What is used to avoid gonadal exposure while taking x-rays? - ANSWERS -A lead
apron
Filtration of the x-ray beam protects the patient by? - ANSWERS -eliminating long
wavelengths from the x-ray beam
The exposure to the patient may be reduced as much as 85% by? - ANSWERS -using
ultra fast film
Which of these materials are used to filter out the long wavelengths from the central
ray? - ANSWERS -Aluminum
What is the minimum required size of the lead apron to protect the reproductive
organs/gonadal region? - ANSWERS -1 foot by 2 feet
If the dentist thinks an x-ray is necessary for proper treatment - ANSWERS -there
should be no hesitation about taking the x-ray
What is the embossed dot on an x-ray? - ANSWERS -To help determine left from right
when mounting
A radiolucent structure appears? - ANSWERS -Black
A radiopaque structure appears? - ANSWERS -White, light, and shades of gray
Radiolucent or Radiopaque: Periodontal ligament - ANSWERS -Radiolucent
Radiolucent or Radiopaque: Maxillary Sinus - ANSWERS -Radiolucent
Which PPE should be worn while taking
x-rays? - ANSWERS -Glasses, gown, mask, gloves
What does the grain size/crystals on a film do to the speed? - ANSWERS -The fastest
films have the largest grains
The use of film badges serves all of these purposes except: - ANSWERS -Evaluate
exposure patient receives
Are Developer and fixer solutions sterilizing agents? - ANSWERS -No
X-rays that expose the film in the mouth are: - ANSWERS -High energy
