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Practical application of polyurethane and Velcro in maxillofacial prosthetics
G T Grant1, R M Taft, S T Wheeler
1Naval Dental School, National Naval Dental Center, Bethesda, Md, USA. GTGrant@mar.med.navy.mil
The Journal of Prosthetic Dentistry
|March 27, 2001
Summary
This study details a new fabrication method for extraoral prostheses, enhancing magnet retention and protection. The procedure utilizes an acrylic resin substructure, a polyurethane liner, and Velcro for improved bonding and durability.
Area of Science:
- Biomaterials Engineering
- Prosthodontics
- Medical Device Fabrication
Background:
- Extraoral prostheses require secure and durable anchoring mechanisms.
- Magnets are often incorporated for attachment but are susceptible to environmental degradation.
- Existing methods for magnet encapsulation and prosthesis bonding may have limitations.
Purpose of the Study:
- To describe a novel fabrication procedure for extraoral prostheses.
- To enhance the retention of the acrylic resin substructure within the prosthesis.
- To ensure effective environmental sealing and protection of an embedded magnet.
Main Methods:
- Fabrication of an acrylic resin substructure.
- Incorporation of a magnet sealed by a polyurethane liner.
- Utilizing Velcro to improve the bond between the acrylic substructure and the silicone prosthesis.
Main Results:
- Achieved improved retention of the acrylic resin substructure.
- Successfully protected the magnet using an encapsulating polyurethane liner.
- Demonstrated enhanced overall prosthesis stability and durability.
Conclusions:
- The described procedure offers a robust method for fabricating extraoral prostheses with improved magnet security.
- The use of a polyurethane liner effectively seals the magnet from the environment.
- Velcro integration enhances the mechanical bond, contributing to prosthesis longevity.