Identifying Overlapped Contacts in Dental Images
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Questions and Answers

Which of the following is a possible cause of an unexposed receptor when using film or sensors?

  • Failure to align the PID over the receptor
  • Failure to turn on the x-ray machine (correct)
  • Failure to unwrap the film packet in a room with white light
  • Failure to listen for the audible exposure signal

    • What does an exposed film look like when it is accidentally exposed to light?

  • Blank
  • Black (correct)
  • White with no structures recorded
  • Clear

    • Can an overexposed receptor occur with sensors?

  • No (correct)
  • Yes
  • Only with digital imaging systems
  • Only with film

    • Which technique may result in overlapped contacts on a dental image?

    <p>Bisecting technique</p> Signup and view all the answers

    What is the result of excessive vertical angulation?

    <p>Foreshortening</p> Signup and view all the answers

    What do elongated images look like?

    <p>Long and distorted teeth</p> Signup and view all the answers

    What is the cause of a cone-cut on a dental image?

    <p>Misaligned PID</p> Signup and view all the answers

    Where should the anterior edge of the premolar bite-wing receptor be positioned?

    <p>At the midline of the mandibular canine</p> Signup and view all the answers

    What may happen if the bite-wing receptor is positioned too far back in the mouth for a premolar bite-wing?

    <p>The distal surfaces of the canines will not be visible on the image</p> Signup and view all the answers

    What should the molar bite-wing show?

    <p>Both maxillary and mandibular molars</p> Signup and view all the answers

    An underexposed receptor will appear

    <p>Light and low in density</p> Signup and view all the answers

    What is the most common cause of underexposure?

    <p>Inadequate exposure time</p> Signup and view all the answers

    What should a periapical image show?

    <p>The entire tooth, including the apex and surrounding structures</p> Signup and view all the answers

    What is the result of incorrect horizontal angulation?

    <p>Overlapped contacts</p> Signup and view all the answers

    What will an unexposed receptor look like?

    <p>Clear</p> Signup and view all the answers

    What will a film exposed to light look like?

    <p>Black</p> Signup and view all the answers

    What will an overexposed receptor look like?

    <p>Gray</p> Signup and view all the answers

    Which technique may result in overlapped contacts on a dental image?

    <p>Both paralleling and bisecting techniques</p> Signup and view all the answers

    What is the cause of a cone-cut on a dental image?

    <p>Misalignment of the PID</p> Signup and view all the answers

    What does a cone-cut look like on a dental image?

    <p>A clear or white unexposed area</p> Signup and view all the answers

    What is the result of excessive vertical angulation?

    <p>Foreshortening</p> Signup and view all the answers

    Which of the following is a possible cause of an unexposed receptor when using digital sensors?

    <p>Receptor exposure</p> Signup and view all the answers

    What is the cause of overlapped interproximal contacts on a bite-wing image?

    <p>Incorrect horizontal angulation</p> Signup and view all the answers

    What should the anterior edge of the premolar bite-wing receptor be positioned to include?

    <p>Maxillary and mandibular premolars</p> Signup and view all the answers

    What is the most common cause of overexposure?

    <p>Excessive exposure time</p> Signup and view all the answers

    What is the most common cause of underexposure?

    <p>Inadequate exposure time</p> Signup and view all the answers

    What is the result of incorrect vertical angulation?

    <p>Distorted image</p> Signup and view all the answers

    What should the edge of the periapical receptor extend beyond the tooth?

    <p>One eighth of an inch</p> Signup and view all the answers

    Which of the following is a possible cause of an unexposed receptor when using digital sensors?

    <p>Exposure to white light</p> Signup and view all the answers

    What is the result of excessive vertical angulation?

    <p>Unexposed receptor</p> Signup and view all the answers

    What should be done to protect the film from accidental exposure to light?

    <p>Turn off all the lights in the darkroom</p> Signup and view all the answers

    Which of the following is a possible cause of an overexposed image?

    <p>Excessive exposure time</p> Signup and view all the answers

    What should be checked on the x-ray machine to prevent overexposure?

    <p>Exposure time, kilovoltage, and milliamperage settings</p> Signup and view all the answers

    What is the most common cause of underexposure?

    <p>Inadequate exposure time</p> Signup and view all the answers

    What should be checked on the x-ray machine to prevent underexposure?

    <p>Exposure time, kilovoltage, and milliamperage settings</p> Signup and view all the answers

    Which of the following is a possible cause of overlapped contacts on a periapical image?

    <p>Incorrect horizontal angulation</p> Signup and view all the answers

    What is the result of excessive vertical angulation on a dental image?

    <p>Foreshortening</p> Signup and view all the answers

    What does a cone-cut look like on a dental image?

    <p>A clear or white unexposed area</p> Signup and view all the answers

    What is the result of insufficient vertical angulation on a dental image?

    <p>Elongation</p> Signup and view all the answers

    Which of the following is a possible cause of an unexposed receptor when using film or sensors?

    <p>Underexposure</p> Signup and view all the answers

    What may happen if the bite-wing receptor is positioned too far back in the mouth for a premolar bite-wing?

    <p>The distal surfaces of canines are not visible on the image</p> Signup and view all the answers

    What should the edge of the periapical receptor extend beyond the tooth?

    <p>1-2 mm</p> Signup and view all the answers

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