Dental impression tray

Details Dental impression tray Dental impression tray

1994-03-18

1996-05-07

O'Connor, Cary E.

Dentistry

Apparatus

Having static product shaping surface

433 37, A61C 900

Patent

active

055139850

ABSTRACT:
A dental impression tray is disclosed herein having a pair of spaced-apart arcuate walls having a common radial center and wherein the opposing wall surfaces define a work area for holding a quantity of dental impression material. A thin plastic embedded fibrous membrane or sheet or a non-woven fabric material extends across the work area having its opposite edges attached to the walls and separating the walls into upper and lower wall sections. One end of the walls may or may not support a wire element while the opposite walls' ends are open. The opposing wall surfaces carry a plurality of alternate vertical grooves and rod-like projections disposed in parallel and split horizontally by the fibrous membrane. The root of each projection includes a recessed portion in order to engage with the impression material and a handle attached to an outer wall of the pair outwardly extends anteriorly therefrom. A tongue retractor structure may be integrated on an inner wall of the pair.

REFERENCES:
patent: 1652910 (1927-12-01), Psayla
patent: 1979493 (1934-11-01), Salvio
patent: 4445854 (1984-05-01), Bekey et al.
patent: 4689010 (1987-08-01), Wolfe
patent: 5316474 (1994-05-01), Robertson

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