Process and apparatus for preparing a crown portion to be fixed

Details Process and apparatus for preparing a crown portion to be fixed Process and apparatus for preparing a crown portion to be fixed

1981-01-09

1983-10-25

Peshock, Robert

Dentistry

Method or material for testing, treating, restoring, or...

Crown

A61C 510

Patent

active

044116268

ABSTRACT:
An apparatus and process for use in preparing a crown portion to be affixed on a tooth stump is described. A model of the tooth stump is clamped to remain immobile and scanned with a scanning head attached to a numerically controlled processing machine. Data from the scanning head indicative of the contour of the tooth stump is stored in a computer memory. From this data a contour for a casting model used to make a crown portion is calculated and stored in the computer memory. Molding material, such as wax, is placed on the tooth stump and a contour tool attached to the numerically controlled processing machine processes the molding material to produce the casting model using the calculated data. The casting model may then be used to produce a crown portion which may be further finished with a contour tool coupled to the numerically controlled processing machine using the calculated data from the computer memory.

REFERENCES:
patent: 2793569 (1957-05-01), Tanner et al.
patent: 3058216 (1962-10-01), Cohen

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