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</p> Signup and view all the answers

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

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

    What is the normal radiographic appearance of the maxillary sinus?

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

    What is the normal thickness of sinus mucosa?

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

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

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

    What is the purpose of the Periapical radiograph?

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

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

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

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