Dental file/reamer instrument

Details Dental file/reamer instrument Dental file/reamer instrument

1995-05-04

1996-12-24

O'Connor, Cary E.

Dentistry

Apparatus

Broach

A61C 502

Patent

active

055868851

ABSTRACT:
A dental instrument adapted to be used as a file or reamer for removing dead or damaged tissue from the root canal of a tooth. The instrument comprises a body part, of which solely the proximal part is shown, an intermediate part and a shank, these three parts preferably being integral with each other. The shank is adapted to be inserted releasably in a chuck, so that it may be driven to rotation when the instrument is used for treating the root canal of a tooth (not shown). A fracture groove between the intermediate part and the shank ensures that fracture occurs at this location, if the body part gets stuck in a tooth, thus avoiding the risk of small distal parts of the instrument being left in the root canal in a manner making it impossible to remove them.

REFERENCES:
patent: 4934934 (1990-06-01), Arpaio, Jr. et al.
patent: 5017138 (1991-05-01), Schilder
patent: 5106298 (1992-04-01), Heath et al.

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