Method for constructing a custom abutment for use in association

Dentistry – Prosthodontics – Holding or positioning denture in mouth

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433213, A61C 800

Patent

active

050529293

ABSTRACT:
A dental abutment, and method for using the dental abutment to manufacture a custom dental abutment for use in association with dental implants is disclosed. The abutment comprises an attaching means for attaching the abutment to an implant which is already in position in a patient's mouth along with a cuff, and a body. A custom dental abutment is manufactured by screwing the dental abutment tightly into place in an implant already in place in a patient's mouth. An impression is recorded of the patient's mouth and the abutment is removed from the mouth, screwed into a laboratory analog of the implant and inserted in the impression. The impression of the patient's mouth is poured with dental stone, the dental stone is separated from the impression and the abutment-containing implant thereby becomes attached to the dental stone model of the patient's mouth. The abutment is then reoriented to fit into the patient's mouth without being seen and to accept a dental prosthesis. The modification may remove some or all of the abutment base. The attaching means and the abutment cuff must not be reoriented. Finally, the reoriented abutment is cast with a dental precious metal which is chemically bonded to the non-oxidizable metal of the reoriented metal abutment. The dental abutment is machinable and is made of a non-oxidizable alloy comprising from 35 to 50 weight percent gold, 15 to 50 weight percent platinum, 15 to 50 weight percent palladium, and 0.1 to 5.0 weight percent iridium.

REFERENCES:
patent: 4744756 (1988-05-01), Ross
patent: 4806306 (1989-02-01), Groll et al.

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