Denture Processing Steps and Errors Quiz
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Questions and Answers

What is the purpose of flasking in denture processing?

  • To secure the teeth in place before final denture base acrylic resin material is added
  • To select the appropriate flask size for denture processing
  • To produce a mould of the waxed-up denture for packing and processing of the acrylic material (correct)
  • To separate the casts from the articulator and trim them

    • What is the recommended material for flasking in denture processing?

  • Heat cure resins
  • Modeling plaster
  • Wax surfaces
  • Dental plaster/stone (correct)

    • What is the purpose of vibrating the material during flasking?

  • To remove excess plaster and smooth the surface
  • To select the appropriate flask for the denture processing
  • To ensure easy flow of material over the teeth and wax surfaces (correct)
  • To eliminate undercuts and sharp edges of plaster

    • What is the next step after investing the wax pattern in chrome cobalt?

    <p>Completed cast framework</p> Signup and view all the answers

    Which reference provides information about the neutral zone in complete and partial dentures?

    <p>Beresin, V.E. and Schiesser, F. J.: The neutral zone in complete and partial dentures</p> Signup and view all the answers

    What is the purpose of the palatal plate sprue?

    <p>To create a vent for air and gas escape</p> Signup and view all the answers

    What is the purpose of spruing the wax pattern?

    <p>To create channels for molten metal to flow</p> Signup and view all the answers

    What is the purpose of applying a separating medium during acrylic resin packing?

    <p>To prevent the resin from sticking to the mold</p> Signup and view all the answers

    Which error during denture processing specifically involves bleaching of acrylic resin?

    <p>Color streaks in the material</p> Signup and view all the answers

    What is the purpose of wax elimination in denture processing?

    <p>To remove excess wax before packing with resin</p> Signup and view all the answers

    What is the purpose of the separating medium in denture flasking?

    <p>To prevent the plaster from sticking to the denture and the flask</p> Signup and view all the answers

    What is the recommended material for flasking in denture processing?

    <p>Dental plaster/stone</p> Signup and view all the answers

    What is the purpose of the palatal plate sprue in denture processing?

    <p>To facilitate uniform flow of acrylic material</p> Signup and view all the answers

    What is the purpose of vibrating the material during flasking?

    <p>To ensure easy flow of material and eliminate air bubbles</p> Signup and view all the answers

    What is the purpose of investing the wax pattern in chrome cobalt?

    <p>To create a durable metal framework for the denture</p> Signup and view all the answers

    What is the next step after completing the cast framework?

    <p>Record block on framework</p> Signup and view all the answers

    What is the purpose of spruing the wax pattern?

    <p>To allow for the escape of gases during casting</p> Signup and view all the answers

    What is the recommended material for investing the wax pattern?

    <p>Chrome cobalt</p> Signup and view all the answers

    What is the purpose of the palatal plate wax pattern?

    <p>To establish the contour of the denture base</p> Signup and view all the answers

    What is the purpose of mounting and setting up of teeth?

    <p>To create occlusal relationships</p> Signup and view all the answers

    What is the purpose of the record block on the framework?

    <p>To record the patient's jaw relationship</p> Signup and view all the answers

    What is the purpose of metallic denture base construction?

    <p>To create a durable base for the denture</p> Signup and view all the answers

    What is the purpose of wax elimination in denture processing?

    <p>To remove wax from the mold to create space for the acrylic resin</p> Signup and view all the answers

    What is the purpose of applying a separating medium during acrylic resin packing?

    <p>To prevent the acrylic resin from sticking to the mold</p> Signup and view all the answers

    What is the purpose of deflasking in denture processing?

    <p>To remove the investing plaster and take out the model from the denture</p> Signup and view all the answers

    What is the purpose of tooth movements, denture base and teeth breakage, and crazing of acrylic resin base or teeth during processing?

    <p>To identify specific errors during processing</p> Signup and view all the answers

    What is the purpose of clamping the flask during denture processing?

    <p>To ensure proper alignment of the mold</p> Signup and view all the answers

    What is the purpose of acrylic resin packing during denture processing?

    <p>To fill the mold with acrylic resin</p> Signup and view all the answers

    What is the purpose of finishing and polishing in denture processing?

    <p>To shape and smooth the surfaces of the denture</p> Signup and view all the answers

    What is the purpose of flask curing in denture processing?

    <p>To ensure proper hardening of the dental stone</p> Signup and view all the answers

    What is the purpose of controlled heating during the curing of acrylic resin?

    <p>To avoid residual monomer content and porosity</p> Signup and view all the answers

    What are specific types of porosity caused by different factors during processing?

    <p>Shrinkage porosity and gaseous porosity</p> Signup and view all the answers

    What is the purpose of the open flask method in packing of acrylic resin?

    <p>To allow excess resin to escape during packing</p> Signup and view all the answers

    What is the purpose of the injection method in packing of acrylic resin?

    <p>To fill the mold with resin using pressure</p> Signup and view all the answers

    Study Notes

    Denture Processing Steps and Potential Errors

    • Dental stone is used in the top section for strength and excess plaster is removed before closing the lid for bench curing.
    • The flask is clamped and wax elimination is done by boiling, hot water, and detergent washing.
    • Acrylic resin packing involves applying a separating medium and mixing the resin at a specific ratio.
    • Packing of acrylic resin can be done using the open flask method or the injection method.
    • Curing of acrylic resin involves controlled heating to avoid residual monomer content and porosity.
    • Different curing cycles include long, short, and rapid methods, each with specific temperature and time requirements.
    • Deflasking involves removing the investing plaster and taking out the model from the denture.
    • Finishing and polishing involve shaping and smoothing the surfaces, with care to avoid overheating.
    • Processing errors of acrylic resins include porosity, tooth movements, breakage, and crazing of the base or teeth.
    • Other errors include bleaching of acrylic resin and color streaks in the material.
    • Shrinkage porosity and gaseous porosity are specific types of porosity caused by different factors during processing.
    • Tooth movements, denture base and teeth breakage, and crazing of acrylic resin base or teeth are caused by specific errors during processing.

    Denture Processing Steps and Potential Errors

    • Dental stone is used in the top section for strength and excess plaster is removed before closing the lid for bench curing.
    • The flask is clamped and wax elimination is done by boiling, hot water, and detergent washing.
    • Acrylic resin packing involves applying a separating medium and mixing the resin at a specific ratio.
    • Packing of acrylic resin can be done using the open flask method or the injection method.
    • Curing of acrylic resin involves controlled heating to avoid residual monomer content and porosity.
    • Different curing cycles include long, short, and rapid methods, each with specific temperature and time requirements.
    • Deflasking involves removing the investing plaster and taking out the model from the denture.
    • Finishing and polishing involve shaping and smoothing the surfaces, with care to avoid overheating.
    • Processing errors of acrylic resins include porosity, tooth movements, breakage, and crazing of the base or teeth.
    • Other errors include bleaching of acrylic resin and color streaks in the material.
    • Shrinkage porosity and gaseous porosity are specific types of porosity caused by different factors during processing.
    • Tooth movements, denture base and teeth breakage, and crazing of acrylic resin base or teeth are caused by specific errors during processing.

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    Related Documents

    Dentures Processing PDF

    Description

    Test your knowledge of denture processing steps and potential errors with this quiz. From dental stone usage to acrylic resin packing and curing, learn about the various stages and common mistakes to avoid. Challenge yourself to identify specific processing errors and understand how to prevent them for successful denture fabrication.

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