Device for coupling dentures to tooth crowns

Details Device for coupling dentures to tooth crowns Device for coupling dentures to tooth crowns

1988-07-07

1989-04-11

Wilson, John J.

Dentistry

Prosthodontics

Holding or positioning denture in mouth

433181, A61C 13225

Patent

active

048201588

ABSTRACT:
A denture can be coupled to a sleeve-like socket of a tooth crown by a dentent member a first portion of which is anchored in the denture and a sleeve-like second portion of which is receivable in the socket. The second portion has an open end which is remote from the first portion, a conical internal surface which diverges in a direction toward the open end and a conical external surface which diverges in a direction away from the open end. The detent member is made of a tough and wear-resistant plastic material, such as a fiber-reinforced polyamide or polycarbonate. The shank of a screw is driven into a tapped bore of the first portion of the detent member and the head of the screw has a conical outer surface which can expand the second portion of the detent member in response to rotation of the screw so that the head is driven into the second portion by way of the open end. This causes the external surface of the second portion to bear against the internal surface of the socket with a force which can be varied within a desired range by rotating the screw.

REFERENCES:
patent: 2694858 (1954-11-01), Cluytens
patent: 3117377 (1964-01-01), Poveromo
patent: 3710446 (1973-01-01), Poveromo

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