Dental instrument for the extraction of an object from a...

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

Reexamination Certificate

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C433S165000

Reexamination Certificate

active

07021935

ABSTRACT:
A dental instrument for the extraction of an object from a root canal, comprising a shaft (1) having an open-end part (3) designed to receive at least a part of object (9), this open-end part (3) able to be deformed to permit seizing object (9) by clamping and then extracting it from the root canal, is characterized in that open-end part (3) is tubular and is able to plastically deform, in a manner that involves a reduction of its inner section, under the effect of a given stress.

REFERENCES:
patent: 3322124 (1967-05-01), Ireland
patent: 4247285 (1981-01-01), Roig-Greene
patent: 4337038 (1982-06-01), Saito et al.
patent: 4746292 (1988-05-01), Johnson
patent: 5085586 (1992-02-01), Johnson
patent: 5173049 (1992-12-01), Levy
patent: 5275563 (1994-01-01), Cohen et al.
patent: 5879160 (1999-03-01), Ruddle
patent: 5951286 (1999-09-01), Rhodes
patent: 6227855 (2001-05-01), Hickok et al.
patent: 6280197 (2001-08-01), Benado
patent: PI 0005652-9 (2002-06-01), None
patent: 100 23 195 (2000-05-01), None
patent: 1213369 (1959-10-01), None
Journal of Endodontics 1998 vol. 24 No. 6 Clinical Aid—A New Method for Retrieving Silver Points and Separated Instruments from Root Canals.

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