Dental Prosthesis: Framework and Denture Base Fabrication
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Questions and Answers

What is the minimum vertical clearance required from the floor of the mouth for a lingual bar?

  • 5 mm
  • 8 mm (correct)
  • 12 mm
  • 10 mm

    • Why is a lingual plate preferred over a lingual bar in certain cases?

  • It is less rigid and stable
  • It is easier to fabricate
  • Additional teeth can be easily added to it (correct)
  • It has less contact with oral tissues

    • What is the minimum height of a mandibular major connector?

  • 10 mm
  • 3 mm
  • 8 mm
  • 5 mm (correct)

    • What is a common disadvantage of using a lingual bar?

    <p>It cannot be used in cases with tori</p> Signup and view all the answers

    What is a potential complication of using a lingual plate?

    <p>Decalcification of tooth structure</p> Signup and view all the answers

    In what situation would a lingual plate be indicated over a lingual bar?

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

    What is the primary limitation of using a horseshoe or U-shaped connector in class II and class IV conditions?

    <p>Support from the palate is limited</p> Signup and view all the answers

    In which situation is a complete palate major connector contraindicated?

    <p>When distal extension denture bases are required</p> Signup and view all the answers

    What is a potential complication of using a complete palate major connector?

    <p>Inflammation and hyperplasia of the soft tissues</p> Signup and view all the answers

    What is the primary advantage of using a horseshoe or U-shaped connector?

    <p>It is strong and rigid</p> Signup and view all the answers

    In which situation would a horseshoe or U-shaped connector be preferred over a complete palate major connector?

    <p>When many anterior teeth are to be replaced</p> Signup and view all the answers

    What is a common disadvantage of using a horseshoe or U-shaped connector?

    <p>It is uncomfortable for the patient</p> Signup and view all the answers

    What is the primary purpose of using rubber abrasive wheels and points in the framework?

    <p>To polish difficult-to-access portions of the framework</p> Signup and view all the answers

    Why is it important to maximize the finish of the clasp arms and other parts of the framework that contact teeth?

    <p>To avoid surface decalcification of the abutment</p> Signup and view all the answers

    What is the purpose of coating the tissue surface of the framework with pressure indicating paste?

    <p>To indicate premature contacts in the framework</p> Signup and view all the answers

    What is the typical problem encountered during framework try-in?

    <p>The framework is difficult to remove from the stone cast</p> Signup and view all the answers

    What is the next step after the framework is tried-in and all premature contacts are eliminated?

    <p>The framework is forwarded to the laboratory for the fabrication of the temporary denture base and occlusal rims</p> Signup and view all the answers

    What is the advantage of using pressure indicating paste during framework try-in?

    <p>It helps to detect premature contacts in the framework</p> Signup and view all the answers

    What is the primary reason all cast circumferential clasps should not be used to engage the mesiobuccal undercut of an abutment adjacent to the distal edentulous space?

    <p>To prevent interference with the edentulous space</p> Signup and view all the answers

    Which type of clasp is used when the retentive undercut on the abutment tooth is located adjacent to the edentulous space?

    <p>Reverse circlet clasp</p> Signup and view all the answers

    What is the advantage of vertical projection or bar clasps over other types of clasps?

    <p>It covers less tooth structure</p> Signup and view all the answers

    In which type of edentulous condition would a ring clasp be used?

    <p>Distal edentulous space with a distolingual undercut</p> Signup and view all the answers

    What is the primary characteristic of intracoronal direct retainers?

    <p>They have a part or the whole of the retentive components located within the anatomical contour of the abutment teeth</p> Signup and view all the answers

    How are bar clasps classified?

    <p>Based on the shape of the retentive terminal</p> Signup and view all the answers

    What type of material is commonly used to make a restoration?

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

    How does a restoration retain its position?

    <p>By using clasps</p> Signup and view all the answers

    Why is it important to maintain space in younger patients after recent extractions or traumatic loss of teeth?

    <p>To allow adjacent teeth to reach sufficient maturity</p> Signup and view all the answers

    What is a potential benefit of maintaining space in adult patients after recent extractions or traumatic loss of teeth?

    <p>To prevent undesirable migration and extrusion of adjacent teeth</p> Signup and view all the answers

    What is one of the primary reasons for using TRPD?

    <p>To establish a new occlusal relationship</p> Signup and view all the answers

    What can be used as an interim RPD in some cases?

    <p>An existing RPD with modifications</p> Signup and view all the answers

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