Apparatus and method for preparing teeth for crown or bridge wor

Details Apparatus and method for preparing teeth for crown or bridge wor Apparatus and method for preparing teeth for crown or bridge wor

1987-11-02

1989-11-07

Wilson, John J.

Dentistry

Apparatus

Having gauge or guide

433 75, 433102, 433165, 433215, 433223, A61C 1904

Patent

active

048788422

ABSTRACT:
Selection of a proper drill bit for preparing a tooth to receive a crown or a bridge is accomplished through the use of a kit which includes a measuring guide and a template showing the profiles of various drill bits. The measuring guide and template are adapted to cooperate with the conventional X-ray. The X-ray is placed behind the measuring guide and oriented with the axis of the tooth perpendicular to a scale which is printed on the measuring guide. The measuring guide is otherwise transparent. By holding the X-ray and measuring guide up to light, a safe margin around the pulp chamber can be identified by the lines of the scale. Next, the drill template is placed in the measuring guide and manipulated until a drill bit profile is located which will maintain the safe margin around the pulp chamber and yet not cut into adjacent teeth. The method is taught together with a kit for practicing the method. The kit includes a selection of drill bits, the drill bit template, and measuring guide.

REFERENCES:
patent: 447475 (1891-03-01), Pomeroy
patent: 3388473 (1968-06-01), Loran
patent: 4165562 (1979-08-01), Sarfatti
patent: 4449929 (1984-05-01), Reese
patent: 4509268 (1985-04-01), Marquam et al.
patent: 4738619 (1988-04-01), Ross
"S. S. White Burns", No. 522, 2/1975.

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