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The interaction of a magnetically retained denture with osseointegrated implants
R Highton1, A A Caputo, M Kinni
1University of California, School of Dentistry, Los Angeles.
The Journal of Prosthetic Dentistry
|October 1, 1988
Summary
Magnetically retained overdentures with osseointegrated implants offer equitable stress distribution and sufficient retention. This system shows promise as a prosthetic replacement, potentially an alternative to other attachment systems for dental implants.
Area of Science:
- Dental Implantology
- Biomaterials Science
- Prosthodontics
Background:
- Atrophied mandibles present challenges for dental prosthetics.
- Osseointegrated implants provide stable support for overdentures.
- Magnetic attachments offer an alternative to conventional retention systems.
Purpose of the Study:
- To evaluate the stress distribution and retention capabilities of a magnetically retained overdenture supported by osseointegrated implants.
- To assess the potential of magnetic attachments as a prosthetic replacement in simulated atrophied mandibles.
Main Methods:
- Construction of a replica atrophied mandible with embedded Brånemark implants.
- Attachment of ferromagnetic keepers to implants and magnets to the overdenture.
- Application of various loads to record stress distribution photographically.
- Testing of the overdenture's retention capabilities.
Main Results:
- Equitable stress distribution observed, with no high foci of stress concentration.
- Magnets provided sufficient retention without excessive loading on implants or residual ridge.
- The magnetically retained overdenture demonstrated favorable biomechanical properties.
Conclusions:
- Magnetically retained overdentures with osseointegrated supports are a viable prosthetic option.
- Magnetic attachments offer a promising alternative to other implant attachment systems.
- Individual patient factors must be considered for optimal clinical application.