Dental Crown Evaluation and Adjustment Quiz
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Questions and Answers

What is the purpose of evaluating and adjusting a fixed prosthodontic crown prior to the patient's delivery appointment?

  • To allow for more detailed patient consultation
  • To increase overhead costs
  • To reduce chairside adjustment time and increase productivity (correct)
  • To ensure the crown fits perfectly without any adjustments

    • What is housed in the articulated casts for evaluating a crown?

  • Solid Cast
  • Removable Pindexed Die (correct)
  • Untrimmed/Untouched Die
  • Articulator

    • What is the benefit of having an untrimmed/untouched die for evaluating a crown?

  • It allows for evaluation of the crown in its original state (correct)
  • It speeds up the evaluation process
  • It is not necessary for crown evaluation
  • It reduces the need for an articulated cast

    • What is the main advantage of reducing chairside time for crown adjustment?

    <p>It allows the dentist to schedule more patients and increase production</p> Signup and view all the answers

    What should be used to examine the intaglio surface of the crown for irregularities?

    <p>Magnification loupes or microscope</p> Signup and view all the answers

    How should the marginal integrity on the crown be evaluated?

    <p>Using the untouched/untrimmed die</p> Signup and view all the answers

    Where should the evaluation of the quality and quantity of proximal contact be conducted?

    <p>On the solid cast</p> Signup and view all the answers

    When should occlusion be checked?

    <p>On the articulated working cast</p> Signup and view all the answers

    Why should provisional be carefully removed?

    <p>To avoid tooth damage or extraction</p> Signup and view all the answers

    How should the marginal fit of the crown be checked?

    <p>With an explorer</p> Signup and view all the answers

    Where should proper occlusion be checked?

    <p>In maximum intercuspation (MIP) and excursive movements</p> Signup and view all the answers

    When should the crown be contoured, polished, and cemented?

    <p>During the patient's appointment</p> Signup and view all the answers

    Why is the importance of proper interproximal contacts and marginal fit emphasized?

    <p>For patient's comfort and oral health</p> Signup and view all the answers

    What should be used to evaluate the intaglio surface of the crown for irregularities?

    <p>Magnification loupes or microscope</p> Signup and view all the answers

    How should the marginal integrity on the crown be evaluated?

    <p>Using the untouched/untrimmed die</p> Signup and view all the answers

    Where should the evaluation of the quality and quantity of proximal contact be conducted?

    <p>On the solid cast</p> Signup and view all the answers

    What is considered an open margin in dental crowns?

    <p>When there is 50µm or more between the crown’s margin and the preparation’s finish line</p> Signup and view all the answers

    What is a common cause for poor margin adaptation of dental crowns?

    <p>Failure for the restoration to seat completely</p> Signup and view all the answers

    What is the purpose of adjusting the vertical dimension of occlusion on a patient’s crown?

    <p>To prevent discomfort, sensitivity, or pain</p> Signup and view all the answers

    Where should occlusal contacts be placed to direct the occlusal force parallel to the tooth’s long axis?

    <p>Cusp tips, marginal ridges, and tooth fossae</p> Signup and view all the answers

    Why should excursive and protrusive interferences on a tooth and crown be removed?

    <p>To maximize the tooth and restoration longevity and prevent discomfort or pain</p> Signup and view all the answers

    What should the contours of dental crowns mimic?

    <p>The natural dentition and promote gingival health</p> Signup and view all the answers

    What is the purpose of polishing a dental crown?

    <p>Creating a surface that facilitates easy plaque removal and reduces the restorative material's abrasiveness to the existing dentition</p> Signup and view all the answers

    What should be done if the margins of dental crowns are over-extended?

    <p>They should be adjusted to prevent open margins</p> Signup and view all the answers

    What can be used to reference the interference area when improving poor margin adaptation?

    <p>Various indicators</p> Signup and view all the answers

    What should be checked and verified once the marginal integrity is acceptable?

    <p>The occlusion in MIP or CR</p> Signup and view all the answers

    What should be removed to prevent discomfort or pain to the patient?

    <p>Excursive and protrusive interferences on a tooth and crown</p> Signup and view all the answers

    What should the contours of dental crowns promote?

    <p>Gingival health</p> Signup and view all the answers

    Study Notes

    Dental Crown Evaluation and Adjustment

    • Margins of dental crowns should not be over-extended, short, over contoured, or opened, with an open margin considered when there is 50µm or more between the crown’s margin and the preparation’s finish line.
    • Common causes for poor margin adaptation are failure for the restoration to seat completely and tight proximal contacts, which can be improved using various indicators to reference the interference area.
    • Once the marginal integrity is acceptable, the occlusion is checked and verified in MIP or CR, adjusting the vertical dimension of occlusion on the patient’s crown to prevent discomfort, sensitivity, or pain.
    • Occlusal contacts should be placed in areas that direct the occlusal force parallel to the tooth’s long axis, such as cusp tips, marginal ridges, and tooth fossae.
    • Excursive and protrusive interferences on a tooth and crown should be removed to maximize the tooth and restoration longevity, as they can cause discomfort or pain to the patient.
    • The contours of dental crowns, including emergence profile, line angles, and embrasure forms, should mimic the natural dentition and promote gingival health, with adjustments made prior to cementation.
    • Polishing is the last step in evaluating and adjusting a crown, creating a surface that facilitates easy plaque removal and reduces the restorative material's abrasiveness to the existing dentition.

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    Description

    Test your knowledge of dental crown evaluation and adjustment with this quiz. Explore key concepts such as margin adaptation, occlusal verification, occlusal force distribution, and restoration contours. Evaluate your understanding of the process and techniques involved in ensuring a well-fitted and functional dental crown.

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