Dental Radiography Flashcards

Jeopardy Questions and Answers in Dental Radiography

$100 Questions

  • $100 Question from H1: What is the error made when a bitewing image does not show open contacts between teeth?
    Answer: Overlap

  • $100 Question: To avoid overlapped contacts on a periapical image, a radiographer should adjust:
    Answer: Horizontal angulation

  • $100 Question from H2: Give an example of each of the following:

    • Direct-digital imaging
      Answer: RVG (Direct)

    • Indirect digital imaging
      Answer: 2

  • $100 Question from H3: When obtaining anterior PA’s, what way is the IR oriented?
    Answer: Vertically (anterior)

  • $100 Question from H4: Inside of the x-ray tube, electrons are generated by the:
    Answer: Electron beam from cathode

  • $100 Question from H5: The speed of the wave is called:
    Answer: Velocity

$200 Questions

  • $200 Question from H1: A radiographer must have sufficient knowledge to perform efficient and accurate dental imaging along with:
    Answer: Technical skills

  • $200 Question: What happens when a radiographer increases the kVp?
    Answer: The electrons at the cathode filament are given the energy and speed to travel across to the anode target (decreases contrast in the image)

  • $200 Question: When the PID is not properly aligned with the image receptor (IR) this error can occur:
    Answer: Cone-cut

  • $200 Question: What is the purpose of the anode target?
    Answer: The site where electrons are converted to x-ray photons

  • $200 Question: When acquiring a full mouth set of x-rays (FMX), what areas of the mouth should we expect to see:
    Answer: All the edentulous and dentulous tooth-bearing areas of the maxillary and mandibular arches.

  • $200 Question from H2: In our clinic, how many images do we typically take for an FMX using a #2 size sensor?
    Answer: 18 images (8 posterior PA's, 6 anterior PA's, 4 bitewing images)

  • $200 Question from H3: When should a radiographer use a lead apron with a thyroid collar for the patient?
    Answer: A thyroid collar can be used for all intraoral images! – No thyroid collar w/ panoramic images!

  • $200 Question from H4: The appearance of a patient's finger on the image is called a:
    Answer: Phalangioma

  • $200 Question from H5: What is the purpose of the aluminum filters in the dental x-ray machine?
    Answer: To filter out the long-wavelength lazy X-rays and only allow the stronger, more penetrable X-rays through

$300 Questions

  • $300 Question from H1: When should a radiographer avoid retake images?
    Answer: At all times (ALARA)

  • $300 Question: What happens to IR density when the mA is increased? How will the image appear?
    Answer: When the mA is increased, density is increased as this is a direct relationship. As density increases, the image will appear darker.

  • $300 Question from H2: When working with a patient that has a palatal tori, where should the radiographer position the IR for patient comfort?
    Answer: On the far side of the torus

  • $300 Question from H4: When would a radiographer need to take vertical bitewings? How many vertical bitewings are typically taken on an adult with a full dentition?
    Answer: Vertical BWXs are taken on periodontal patients to show more of the IP alveolar bone levels; Typically, 6 vertical BWX's are taken (Some DDS will request an anterior vertical BWX)

  • $300 Question from H5: To decrease the magnification that is created when using the paralleling technique (due to the increased IR to object distance), a radiographer can increase the _ to compensate.
    Answer: Target to IR distance

$400 Questions

  • $400 Question from H1: What are the nonverbal communication cues that can make a patient feel secure in the radiographer:
    Answer:

    • Body movement (leaning toward the patient; nodding the head)

    • Eye contact (eyes should not wander)

    • Facial expressions

  • $400 Question from H3: What does parallel mean?
    Answer: Two lines or objects that are in the same plane and never intersect. These lines are always separated by the same distance.

  • $400 Question from H4: The lack of image sharpness, or fuzzy unclear area that surrounds a structure (tooth) is termed:
    Answer: Penumbra

  • $400 Question from H5: What determines the binding energy of an orbiting electron?
    Answer: Binding energy is determined by the distance between the orbiting electrons and the nucleus- binding energy is the greatest near the nucleus

$500 Questions

  • $500 Question from H1: Name some advantages of digital imaging:
    Answer:

    • Ability to view images quickly

    • Easy to share with other healthcare providers when referring patients

    • Patient education

    • No chemicals or darkroom needed

  • $500 Question from H2: What is the term for infection control that means the absence of pathogens?
    Answer: Asepsis

  • $500 Question from H3: When should bitewings or periapical images be taken on our patients?
    Answer: As needed, based on the individual patient's needs.

  • $500 Question from H4: What is true regarding x-rays with longer wavelengths:
    Answer: Longer wavelengths have less energy and are less penetrable; Short wavelength energy increases

  • $500 Question from H5: What is true regarding x-rays with longer wavelengths:
    Answer: Spontaneous emission of radiation from the disintegration of unstable atomic nuclei is known as Radioactivity

Final Jeopardy

  • Final Jeopardy Question: What technique factor would you adjust if you wanted to create a larger electron cloud?
    Answer: milliamperage