Measuring apparatus for setting the correct penetration depth of

Details Measuring apparatus for setting the correct penetration depth of Measuring apparatus for setting the correct penetration depth of

1978-11-06

1980-07-15

Peshock, Robert

Dentistry

Apparatus

Having gauge or guide

433102, A61G 114, A61C 502

Patent

active

042126398

ABSTRACT:
A measuring device for setting the correct length or penetration depth of root canal instruments comprising relatively movable lower and upper portions and scale means cooperating with said two portions to enable accurately setting the intended depth of penetration of a root canal instrument used by the dentist. The upper portion has a substantially plate-like member having a top face whose distance from a top face or surface of the lower portion, defining a base portion, can be accurately set with the aid of the scale means. The root canal instrument then is inserted through a proper size hole in the plate-like member, onto the top face of which there has been previously placed a stopper, typically in the form of a disc, whereafter the root canal instrument is inserted through the stopper and the hole until the tip of the root canal instrument abuts against the top face or surface of the lower base portion. The stopper then engages about the shaft of the root canal instrument at the proper location from the tip of such instrument, corresponding to the intended working or penetration depth. At the plate-like member there is provided a substantially bowl-like depression or recess for receiving stoppers therein. The entire unit, namely the measuring device, the stoppers, and each calibrated root canal instrument can be conjointly sterilized.

REFERENCES:
patent: 3938253 (1976-02-01), Barnard
patent: 4028810 (1977-06-01), Vice

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