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Related Experiment Videos

The future of complete prosthodontics.

D D Krajicek

    The Journal of Prosthetic Dentistry
    |February 1, 1977
    PubMed
    Summary

    A new silicone elastomer was developed for maxillofacial prostheses, offering superior mechanical properties, skin-like feel, and durability. This advanced material provides an optimal balance for realistic and long-lasting facial reconstructions.

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    Area of Science:

    • Biomaterials Science
    • Polymer Chemistry
    • Medical Device Engineering

    Background:

    • Maxillofacial prostheses require materials with excellent mechanical properties, durability, and aesthetic qualities.
    • Current silicone elastomers often present limitations in terms of processability, environmental stability, or achieving a natural skin-like appearance.

    Purpose of the Study:

    • To synthesize and formulate an improved silicone elastomer for fabricating extraoral maxillofacial prostheses.
    • To achieve an optimal balance of mechanical properties, processability, environmental stability, colorability, and aesthetics.

    Main Methods:

    • Synthesis of an arylene silicone polymer: polytetramethylsilphenylenesiloxanedimethylsiloxane.
    • Formulation as a pourable, viscous, room-temperature-vulcanizing liquid.
    • Casting in dental stone molds with conventional catalysts.

    Main Results:

    • The silphenylene vulcanizates are strong, tough, soft, and pliable, with tensile strength of 1400 psi and elongation at break of 1000%.
    • These silicone elastomers exhibit high surface energy, providing excellent tactual and visual resemblance to skin.
    • The material is colorless, accepts coloration, and adheres well to tapes and adhesives.

    Conclusions:

    • The developed silphenylene silicone elastomer offers a significant improvement for maxillofacial prostheses fabrication.
    • It provides an optimal combination of physical, aesthetic, and processing characteristics for realistic and durable prostheses.
    • Preclinical and ongoing clinical evaluations suggest promising results for this novel biomaterial.

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