Waters Projection Radiographic Technique Quiz
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Questions and Answers

Which of the following is a developmental disability?

  • Cavities
  • Gingivitis
  • Tooth decay
  • Autism (correct)

At what age do most adolescents have 28 permanent teeth in place?

  • 21
  • 16
  • 13 (correct)
  • 10

What is the recommended technique for imaging the edentulous patient with severely resorbed alveolar ridges?

  • Paralleling technique
  • Bitewing technique
  • Occlusal technique
  • Bisecting technique (correct)

Which type of dental images are needed whenever evidence of caries is suspected in pediatric patients?

<p>Bitewing images (C)</p> Signup and view all the answers

Which area is most likely to elicit the gag reflex when stimulated?

<p>The maxillary molar region (D)</p> Signup and view all the answers

What should be done to relax and reassure a patient with a hypersensitive gag reflex?

<p>All of the above (D)</p> Signup and view all the answers

What are the two reactions that occur before the gag reflex is initiated?

<p>Cessation of respiration and contraction of throat muscles (D)</p> Signup and view all the answers

Which of the following techniques can help suppress the gag reflex during receptor placement and exposure?

<p>Humming a song while placing the receptor (D)</p> Signup and view all the answers

What should the dental radiographer do if the patient starts gagging upon receptor placement?

<p>Remove the receptor as quickly as possible (B)</p> Signup and view all the answers

What is the recommended receptor placement sequence for someone with a severe gag reflex?

<p>Anterior, premolar, molar (A)</p> Signup and view all the answers

How should the dental radiographer communicate with a patient who is blind or visually impaired?

<p>Communicate using clear verbal explanations (A)</p> Signup and view all the answers

Which type of imaging is typically used in general dental practices to view large areas of the jaws and the skull?

<p>Panoramic imaging (B)</p> Signup and view all the answers

What is the purpose of using extraoral imaging?

<p>All of the above (D)</p> Signup and view all the answers

Which film size is most often used in film-based extraoral imaging?

<p>8 × 10 inch (B)</p> Signup and view all the answers

What is the purpose of using a grid in extraoral imaging?

<p>All of the above (D)</p> Signup and view all the answers

Which projection is used to evaluate impacted teeth, fractures, and lesions in the body of the mandible?

<p>Lateral Jaw - Body of Mandible (A)</p> Signup and view all the answers

Which projection is used to evaluate impacted third molars, large lesions, and fractures in the ramus of the mandible?

<p>Lateral Jaw - Ramus of Mandible (D)</p> Signup and view all the answers

Which projection is used to evaluate facial growth and development, trauma, and disease and developmental abnormalities?

<p>Lateral Cephalometric Projection (D)</p> Signup and view all the answers

Which projection is used to evaluate frontal and ethmoid sinuses, orbits, and nasal cavity?

<p>Posteroanterior Projection (D)</p> Signup and view all the answers

Which structures are examined in temporomandibular joint tomography?

<p>Condyle, articular eminence, and glenoid fossa (B)</p> Signup and view all the answers

What is the purpose of tomography in TMJ imaging?

<p>To show structures within a selected plane of tissue (B)</p> Signup and view all the answers

How is the selected plane of tissue determined in TMJ tomography?

<p>By moving the receptor and x-ray tubehead in opposite directions around a fixed rotation point (A)</p> Signup and view all the answers

Which projection is used to evaluate the maxillary sinus area?

<p>Waters projection (D)</p> Signup and view all the answers

What is the purpose of the submentovertex projection?

<p>To identify the position of the condyles and evaluate fractures of the zygomatic arch (B)</p> Signup and view all the answers

What is the purpose of the reverse Towne projection?

<p>To identify fractures of the condylar neck and ramus area (C)</p> Signup and view all the answers

What is the purpose of the transcranial projection?

<p>To evaluate the superior surface of the condyle and the articular eminence (B)</p> Signup and view all the answers

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