Orthodontic Appliances Quiz
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Questions and Answers

What type of appliance is the bionator?

  • Functional appliance (correct)
  • Open bite appliance
  • Class III appliance
  • Standard appliance

    • What is the main advantage of the bionator?

  • It is easy to wear due to the lack of acrylic in the palate. (correct)
  • It is commonly used for Class II malocclusion.
  • It is easy to repair if it breaks.
  • It is a fixed appliance that does not require patient compliance.

    • What is the main disadvantage of the fixed functional appliance?

  • It requires high patient compliance.
  • It is not effective for Class II malocclusion.
  • It has a high percentage of breaking. (correct)
  • It is not commonly used.

    • What is the purpose of the buccal extension of the labial bow in the bionator?

    <p>Both a and b</p> Signup and view all the answers

    What is the key hypothesis behind the Andresen activator?

    <p>Both a and b</p> Signup and view all the answers

    What is the main characteristic of the Andresen activator?

    <p>It is a loose-fitting monobloc appliance that advances the mandible.</p> Signup and view all the answers

    What is the minimum daily wear time recommended for functional appliances?

    <p>12-15 hours</p> Signup and view all the answers

    Which of the following is NOT a patient requirement for using functional appliances?

    <p>Severe skeletal problem</p> Signup and view all the answers

    What is the purpose of taking a 'working bite' in functional appliance treatment?

    <p>To determine the ideal bite position</p> Signup and view all the answers

    Which of the following is NOT a mode of action of functional appliances?

    <p>Skeletal effects</p> Signup and view all the answers

    In a Class II division 1 case, how does a functional appliance affect the incisors?

    <p>Upper incisors retrocline, lower incisors procline</p> Signup and view all the answers

    What is the ideal anterior gap recommended when positioning the mandible forward for a functional appliance?

    <p>2-3 mm</p> Signup and view all the answers

    Which type of functional appliance is primarily tooth-borne?

    <p>Twin Block</p> Signup and view all the answers

    What is the primary advantage of soft tissue-borne functional appliances?

    <p>Less dental tipping</p> Signup and view all the answers

    Which functional appliance is commonly used to correct Class II malocclusion and has upper and lower bite blocks?

    <p>Twin Block</p> Signup and view all the answers

    What is the purpose of the acrylic shields in the Frankel functional appliance?

    <p>Both A and C</p> Signup and view all the answers

    Which functional appliance is considered a combined soft tissue and tooth-borne appliance?

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

    What is the primary purpose of using a functional appliance in orthodontic treatment?

    <p>To make subsequent orthodontic treatment easier</p> Signup and view all the answers

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