Expanding dental wedge

Details Expanding dental wedge Expanding dental wedge

1994-12-06

1996-11-12

O'Connor, Cary E.

Dentistry

Apparatus

Having absorption means or means to isolate tooth or mouth...

433149, 433 80, A61C 514

Patent

active

055734006

ABSTRACT:
An expanding dental wedge structure to be used in association with dental matrix bands as used for placing dental restorative materials. The pre-expansion shape in cross section is roughly triangular with the dimensions of the triangle decreasing along the length ending in a pointed manner (FIG. 1). The wedge (FIG. 1) is to be inserted into the area between teeth, one of which is carrying a matrix band. After insertion, the wedge is exposed to moisture causing pronounced expansion (FIG. 2), which through equal pressure on the tooth surfaces and gingival tissues involved does: (a) press the matrix tightly against the tooth sealing out moisture contamination, (b) absorb moisture, drying the surgical field, and (c) decreases blood flow and subsequent bacterial and vital transmission.

REFERENCES:
patent: 2867905 (1959-01-01), Meacham
patent: 3510948 (1970-05-01), Walthall
patent: 3815243 (1974-06-01), Eames
patent: 3890714 (1975-06-01), Gores
patent: 4198977 (1980-04-01), Aoki
patent: 4259070 (1981-03-01), Soelberg
patent: 4337041 (1982-06-01), Harnseny
patent: 4468199 (1984-08-01), Wikel
patent: 4469199 (1984-08-01), Weikel
patent: 4565722 (1986-01-01), Highgate et al.

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