Hydraulic endodontia device

Dentistry – Method or material for testing – treating – restoring – or... – Endodontic

Patent

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A61C 502

Patent

active

055756573

ABSTRACT:
A hydraulic endodontia device and method comprised of a primary obturator rod having an objective tip end with at least one spill gate integrally formed therewithin and a handle end, the primary rod being generally cylindrical in shape and gradually diminishing in circumference from the handle end to said tip end. The invention is further defined by a plurality of secondary obturator rods each having an exterior convex side and an interior concave side. The interior concave side of each secondary rod glides upon the primary rod or the exterior convex side of an underlying secondary rod in cooperative association therewith when the open spill gate, the primary rod is inserted into the extirpated root canal until it reaches the distal end at the tip end, whereby narrowing of the distal root canal end constricts the spill gate to effuse cement to the apical area. Additional cement is applied to a plurality of secondary rod interior concave sides which are then inserted within the canal one rod at a time in cooperative association with the primary rod until complete obturation is achieved.

REFERENCES:
patent: 1067015 (1913-07-01), Fowler
patent: 1757595 (1930-06-01), Siegel
patent: 2453696 (1948-11-01), Brooks
patent: 4518356 (1985-05-01), Green
patent: 4740245 (1988-04-01), Futami et al.
patent: 4824370 (1989-04-01), Laurichesse et al.
patent: 5017138 (1991-05-01), Schilder
patent: 5074792 (1991-12-01), Bernadat
patent: 5083923 (1992-01-01), McSpadden
patent: 5165893 (1992-11-01), Thompson

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