Barrier free matrix band with flash guard

Details Barrier free matrix band with flash guard Barrier free matrix band with flash guard

2005-03-29

2008-05-06

Lewis, Ralph A. (Department: 3732)

Dentistry

Apparatus

Having static product shaping surface

Reexamination Certificate

active

07367802

ABSTRACT:
A dental matrix band (1) having a brace extrusion window (4), a flash guard (14) and guard brace (22) which fold to articulate into a conventional Tofflemire-like matrix band shape. The flash guard (14) is secured by the guard brace (22) against the brace extrusion window4. This serves as a barrier to temporarily block a restorative substance from passing into an inter-proximal space. After cutting a connecting severance junction (30), the flash guard (14) is removed via a removal tab (16) and aperture (18). The restorative material is then displaced to created direct contact with an adjacent inter proximal surface through the window4. After polymerization, a series of linearly aligned notches (28a,b,c,d), superior window notches (8a,b), inferior window notch (10a,b) and gingival notch (12a,b) permit a vertical bisection split through the matrix (1) conjoined aperture(25). This facilitates the matrix (1) removal from a cured contact point.

REFERENCES:
patent: 1133379 (1915-03-01), Hollingsworth
patent: 2591744 (1952-04-01), Tofflemire
patent: 4024643 (1977-05-01), Eisenberg
patent: 4781583 (1988-11-01), Lazarus
patent: 5330353 (1994-07-01), Waverin
patent: 6350122 (2002-02-01), Meyer
patent: 6509540 (2003-01-01), Summer et al.
patent: 6736639 (2004-05-01), Summer
patent: 7037109 (2006-05-01), Viscomi et al.
patent: 7214058 (2007-05-01), Summer
patent: 2005/0221255 (2005-10-01), Haraden et al.
patent: 2005/0287491 (2005-12-01), Slone
patent: 2006/0084036 (2006-04-01), Boston
patent: 195 46 454 (1997-06-01), None
patent: WO 2005/023135 (2005-03-01), None

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