Retention system for dental prosthesis

Details Retention system for dental prosthesis Retention system for dental prosthesis

1986-02-18

1987-07-21

Peshock, Robert

Dentistry

Prosthodontics

Holding or positioning denture in mouth

433219, A61C 1312, A61C 508

Patent

active

046815422

ABSTRACT:
An improved telescoping retainer for dental prostheses includes a coping mounted to an abutment tooth and having an endless O-ring groove formed about the outer axial surface of the coping in a plane generally transverse to the coping axis. The coping mates closely with a retainer cavity in the dental prosthesis and has a complementary O-ring groove defined in the retainer surface. A resilient O-ring is fitted over the coping such that the ring cross section is partly received within the coping groove and partly within the retainer groove, thereby forming a resilient interference fit between the dental prosthesis and the coping. A method for making the grooved copings and retainers is disclosed.

REFERENCES:
patent: 2866285 (1985-12-01), Gerber
patent: 3514858 (1970-06-01), Silverman
patent: 4193194 (1980-03-01), Dalise
patent: 4204321 (1980-05-01), Scott

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