Maxillary Sinus and Radiographic Considerations

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Questions and Answers

What is the main reason why maxillary sinuses are important in dentistry?

  • They are closely related to the lower teeth
  • They are responsible for the sense of smell
  • Their proximity to upper teeth affects dental diseases (correct)
  • They are the largest paranasal sinuses

What is the shape of the maxillary sinus cavity?

  • Spherical
  • Cylindrical
  • Oval
  • Approximately pyramidal (correct)

What borders the medial wall of the maxillary sinus?

  • The nasal cavity (correct)
  • The zygoma and cheek
  • The orbit
  • The pterygopalatine fossa

What is the radiographic feature of disease within the maxillary sinus?

<p>Similar radiographic changes as in other paranasal sinuses (C)</p> Signup and view all the answers

Which of the following is NOT a part of the maxillary sinus anatomy?

<p>Turbinate bones (C)</p> Signup and view all the answers

What is the normal radiographic appearance of the maxillary sinus?

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

What is the relation of the floor of the maxillary sinus to the upper teeth?

<p>It is related to the apices of the upper posterior teeth (D)</p> Signup and view all the answers

What is the main purpose of understanding the anatomy of the maxillary sinus in dentistry?

<p>To understand the relationship between the sinus and upper teeth (C)</p> Signup and view all the answers

What is the main purpose of the Occipitomental (PA waters view) radiograph?

<p>Investigation of the sphenoidal sinus (A)</p> Signup and view all the answers

What is the normal thickness of sinus mucosa?

<p>1 mm (D)</p> Signup and view all the answers

What is the radiological sign of a fluid level in the sinus?

<p>Opacity within the sinus (B)</p> Signup and view all the answers

What is the purpose of the Periapical radiograph?

<p>To evaluate the relationship with upper posterior teeth (A)</p> Signup and view all the answers

What is the effect of sinus mucositis on the mucosal lining?

<p>It increases in thickness by 10 to 15 times (D)</p> Signup and view all the answers

What is the characteristic of a normal sinus mucosa on radiographs?

<p>It is not visualized (D)</p> Signup and view all the answers

What is the radiological sign of a foreign body in the sinus?

<p>The presence of a foreign body (B)</p> Signup and view all the answers

What is the purpose of the Panoramic radiograph?

<p>To assess the floor and posterior wall of the sinus cavity (A)</p> Signup and view all the answers

What is the significance of a tooth root covered with a thin layer of bone?

<p>It separates the tooth root from the sinus (C)</p> Signup and view all the answers

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