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A predictable and accurate technique with elastomeric impression materials.

N Barghi1, J C Ontiveros

  • 1Department of Restorative Dentistry, University of Texas Health Science Center, San Antonio 78284-7890, USA. barghi@uthscsa.edu

American Journal of Dentistry
|January 29, 2000
PubMed
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This study introduces a novel method using polyvinylsiloxane impression materials for more accurate dental impressions. A modified custom tray with heavy material and extra-light material ensures predictable and precise final results.

Area of Science:

  • Dental Materials Science
  • Prosthodontics
  • Impression Techniques

Background:

  • Accurate dental impressions are crucial for successful prosthodontic treatments.
  • Stock trays with conventional impression materials can lead to inaccuracies.
  • Polyvinylsiloxane materials offer good detail reproduction but require optimized techniques.

Purpose of the Study:

  • To develop and evaluate a modified impression technique for enhanced accuracy.
  • To improve the predictability of final impressions using polyvinylsiloxane materials.
  • To adapt stock trays for superior fit and detail capture.

Main Methods:

  • A modified custom tray was fabricated using a heavy-bodied polyvinylsiloxane material.
  • An extra-light-bodied polyvinylsiloxane material was employed for the final impression.

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  • The technique was tested in conjunction with standard stock trays.

    • Main Results:

    • The proposed method demonstrated increased predictability in achieving accurate final impressions.
    • The combination of modified custom trays and specific material viscosities improved detail reproduction.
    • The technique proved effective in overcoming limitations of standard stock tray usage.

    Conclusions:

    • This modified impression technique offers a reliable approach for obtaining accurate dental impressions.
    • Utilizing polyvinylsiloxane materials with a dual-viscosity strategy enhances clinical outcomes.
    • The method provides a cost-effective alternative for improving impression accuracy with stock trays.