|For Removable Cement Retained Crown
& Bridge and Implant Prostheses
|Click on the figure illustrations for larger images to view|
|Since fifty percent of Fixed Prosthodontic cases fail within the first five years from biological or mechanical reasons, it is often advantageous to make the cemented fixed prosthesis into one that is removable. This is easily and economically done be placing a Metalift Key into the prosthesis prior to final cementation. This is simply and quickly done either in the laboratory or in the office after it is returned from the lab.
This is especially helpful for implant cases, periodontal prostheses, complex cases and other situations such as when secondary caries occurs or endodontics becomes necessary after final cementation of the restoration.
When using the Metalift System to create a removable or retrievable fixed prosthesis you can accurately place the pilot hole in the most desirable location by using the underside approach. This approach is especially useful on implant cases. After the prosthesis is completed by the laboratory and prior to cementing it, install a Metalift Key by directly centering it over the location of the implant abutment. Do this by approaching the prosthesis from the underside, where you are able to see you are directly in the middle or center of the portion of the casting where the implant abutment fits. Then place the pilot hole and precision channel through the metal in the usual manner. (See Fig. 32)