Impression tray for dental prostheses

Details Impression tray for dental prostheses Impression tray for dental prostheses

1983-03-22

1984-11-27

Wilson, John J.

Dentistry

Apparatus

Having static product shaping surface

433 37, A61C 900

Patent

active

044848900

ABSTRACT:
An impression tray of rigid massive material is disclosed. The tray forms a generally U-shaped channel for impression paste, and it is split along the smooth bottom of the channel into two releasably connectible sections. Paste retention grooves are formed in the sidewalls of the channel, and these grooves are undercut to retain the paste in the channel when the tray sections are connected. A screw assembly facilitates release of the sections and consequent release and nondestructive removal of the cured dental paste impression. A handle is also formed as an integral extension of the outer section of the tray.

REFERENCES:
patent: 980411 (1911-01-01), Gantz
patent: 1402298 (1922-01-01), Kidder
patent: 1422488 (1922-07-01), Smith
patent: 1489192 (1924-04-01), Cleveland
patent: 1499482 (1924-07-01), Simmons
patent: 1608632 (1926-11-01), Strusser
patent: 2117846 (1938-05-01), Kalvin
patent: 2352545 (1944-06-01), Jefferies
patent: 3978585 (1976-09-01), Holcomb

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