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Related Experiment Videos

Evolution of the mandibular mesh implant.

K E Salyer, D F Johns, R E Holmes

    Journal of Biomedical Materials Research
    |July 1, 1977
    PubMed
    Summary

    Researchers developed over 150 maxillofacial mesh implants between 1960-1972, refining designs for strength and bioattachment. Stainless steel casting via lost-wax technique improved mandibular mesh tray production.

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    Area of Science:

    • Biomaterials Engineering
    • Maxillofacial Surgery
    • Medical Device Development

    Background:

    • The Dallas Veterans Administration Hospital Maxillofacial Research Laboratory developed numerous cast-mesh implants from 1960 to 1972.
    • Implant designs evolved through ovoid, circular, and double-lumened cross-sections to enhance strength, surface area for bioattachment, and adjustability.

    Purpose of the Study:

    • To detail the evolution and manufacturing techniques of cast-mesh implants developed by the laboratory.
    • To highlight improvements in implant design and material selection, specifically the shift to stainless steel for mandibular mesh trays.

    Main Methods:

    • Development of successive implant designs, incorporating sleeves, collars, and bows, with optional acrylic condylar heads.
    • Creation of a one-piece mandibular mesh tray using a lost-wax technique with stainless steel.
    • Utilizing refractory models, custom dies, and centrifugal force casting with electro-induction machines.

    Main Results:

    • Over 150 cast-mesh implants were created, with designs progressively optimized for biomechanical properties.
    • Stainless steel was adopted over Vitallium due to superior malleability, facilitating improved casting processes.
    • A vertically adjustable mandibular mesh tray was successfully developed and cast.

    Conclusions:

    • The laboratory's efforts led to significant advancements in cast-mesh implant technology for maxillofacial applications.
    • The lost-wax casting technique, particularly with stainless steel, proved effective for producing complex mandibular mesh trays.
    • Continuous design refinement and material innovation were key to improving implant performance and manufacturability.

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