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Light-cured resin for post patterns.

M D Waldmeier1, J E Grasso

  • 1Department of Restorative Dentistry and Endodontology, University of Connecticut Health Center, School of Dental Medicine, Farmington.

The Journal of Prosthetic Dentistry
|September 1, 1992
PubMed
Summary
This summary is machine-generated.

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This study introduces a light-cured acrylic resin as a superior alternative to chemically-cured resins for direct post patterns. This innovative method offers improved material handling and flexibility, simplifying dental procedures.

Area of Science:

  • Dental Materials Science
  • Polymer Chemistry

Background:

  • Traditional direct post patterns often utilize chemically-cured acrylic resins, which can present manipulation challenges.
  • Elastomeric impressions are commonly used in conjunction with these resins for fabricating post patterns.

Purpose of the Study:

  • To present a novel method employing light-cured acrylic resin as an alternative for direct post patterns.
  • To evaluate the advantages of GC Unifast LC acrylic resin over conventional materials.

Main Methods:

  • Utilized GC Unifast LC, a powder/liquid acrylic resin cured by visible light.
  • Observed the four polymerization stages: slurry, stringy, dough-like (plastic), and rubber-like (elastic).
  • Assessed material contouring in the dough-like state and flexibility in the rubber-like state for disengagement from undercuts.

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Main Results:

  • GC Unifast LC demonstrates ease of manipulation compared to traditional resins.
  • The material does not necessitate changes in standard laboratory handling procedures.
  • The resin exhibits flexibility in its rubber-like state, aiding in removal from undercut areas.

Conclusions:

  • Light-cured acrylic resin offers a viable and advantageous alternative for direct post pattern fabrication.
  • The material's handling properties and flexibility enhance its clinical utility in restorative dentistry.