Dental matrix for elongated tooth cavities has bottom apron for

Details Dental matrix for elongated tooth cavities has bottom apron for Dental matrix for elongated tooth cavities has bottom apron for

1996-11-25

1998-03-24

O'Connor, Cary E.

Dentistry

Apparatus

Having static product shaping surface

A61C 504

Patent

active

057305927

ABSTRACT:
A dental matrix or band applicable around a tooth or portion of a tooth undergoing a restoration of a cavity (17) to control the shape of the restorative material. The matrix is made of a thin strip of metal and features a bulbous concavity in its middle portion to simulate the contours normal to a tooth, a malleable apron (13, 23) which expedites its adaptation to the irregular contours of a tooth root, notches on the edges of the apron to permit control of the shape at all edges, and extending wings to facilitate wrapping of the matrix around a tooth being restored. The central portion of the matrix is malleable to permit it to be manipulated or shaped by the dentist to perfect its shape, while the wings are hardened to increase the force of the embrace of the matrix.

REFERENCES:
patent: 844079 (1907-02-01), Armstrong
patent: 1182376 (1916-05-01), Ivory
patent: 1669231 (1928-05-01), Curran
patent: 2267836 (1941-12-01), Parkin
patent: 2567101 (1951-09-01), Carpenter
patent: 4553937 (1985-11-01), Ropers

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