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Related Experiment Videos

Dimensional and occlusal changes in fluid resin dentures.

A N Antonopoulos

    The Journal of Prosthetic Dentistry
    |June 1, 1978
    PubMed
    Summary

    Fluid acrylic resins offer a promising alternative for complete denture fabrication, minimizing common issues like tooth movement and porosity. While exhibiting slightly higher processing shrinkage, these dentures demonstrate comparable function to traditional heat-cured acrylic dentures.

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    Area of Science:

    • Dental Materials Science
    • Prosthodontics

    Background:

    • Complete dentures are essential for restoring function and aesthetics in edentulous patients.
    • Traditional heat-curing acrylic resins are commonly used but can present processing challenges.
    • Fluid acrylic resins offer a potential alternative processing method for denture fabrication.

    Purpose of the Study:

    • To evaluate the processing characteristics and clinical performance of complete dentures fabricated using fluid acrylic resins.
    • To compare fluid resin dentures with those processed using conventional compression-molding techniques.

    Main Methods:

    • Complete dentures were fabricated using a novel flask, modified spruing, immobilized teeth in a hydrocolloid mold, and mechanical vibration during resin pouring.
    • Fluid resin dentures were compared to heat-cured acrylic resin dentures processed via compression molding.
    • Processing shrinkage, vertical dimension of occlusion changes, and surface deficiencies were assessed.

    Main Results:

    • Fluid resin dentures exhibited greater processing shrinkage (0.617%) compared to conventional dentures (0.377%).
    • Excessive reduction in vertical dimension of occlusion was minimized, with an average cusp height reduction of -0.089 mm.
    • Individual tooth movement, voids, porosity, and surface deficiencies were eliminated in fluid resin dentures.

    Conclusions:

    • Fluid acrylic resin processing effectively eliminates common defects like voids and tooth movement in complete dentures.
    • Despite increased shrinkage, fluid resin dentures demonstrate comparable functional performance to heat-cured dentures.
    • This technique shows potential for improved dimensional stability and reduced surface imperfections in complete denture fabrication.

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