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Processing changes in maxillary complete dentures.

S K Lechner, E P Lautenschlager

    The Journal of Prosthetic Dentistry
    |July 1, 1984
    PubMed
    Summary
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    This study introduces a novel radiographic technique to precisely measure curing changes in acrylic resin dentures. The method accurately quantifies shrinkage and contour alterations in the palatal region for improved denture fabrication.

    Area of Science:

    • Dental Materials Science
    • Prosthodontics
    • Radiographic Imaging

    Background:

    • Acrylic resin dentures are susceptible to dimensional changes during the curing process.
    • Accurate measurement of these changes is crucial for optimal denture fit and function.
    • Existing methods for assessing curing-induced alterations in dentures have limitations.

    Purpose of the Study:

    • To describe a new radiographic technique for measuring curing changes in acrylic resin dentures.
    • To enable precise comparison of palatal thickness and undercuts.
    • To quantify shrinkage and contour changes during the denture curing process.

    Main Methods:

    • The technique utilizes a precision cast and a specialized denture positioner.
    • A lead foil strip is transferred from the cast to the denture.

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  • Radiographs of the lead foil strip are taken, projected at 20x magnification, and tracings are superimposed for analysis of dimensional changes.

    • Main Results:

    • The described technique allows for direct comparison of palatal thickness and undercuts.
    • Radiographic analysis of the lead foil strip effectively reveals shrinkage and contour changes.
    • The method provides a quantitative assessment of curing-induced alterations in acrylic resin.

    Conclusions:

    • This radiographic technique offers a reliable and precise method for evaluating curing changes in acrylic resin dentures.
    • The technique facilitates accurate measurement of shrinkage and contour modifications, aiding in improved denture design and fabrication.
    • It provides valuable data for understanding and controlling dimensional stability in denture base materials.