Practical cutting bur and method of training using same for the

Details Practical cutting bur and method of training using same for the Practical cutting bur and method of training using same for the

1995-12-06

1998-10-20

Lewis, Ralph A.

Dentistry

Apparatus

Tool bit

434263, A61C 302

Patent

active

058237755

ABSTRACT:
Diamond bur A has base metal 1 formed with cylindrical shank 1b on one side of diamond bur A, and cutting portion 1a formed on base metal 1 on the other side of diamond bur A extending over a given length from an end of diamond A. A mixture 2 of various abrasive grains with three different grain sizes are secured to cutting portion 1a. Since various abrasive grains with different grain sizes are secured to cutting portion 1a, with the increase of load applied on artificial tooth, the number of abrasive grains contributing to cutting increases, and the machinability is improved. This tendency is equal to the machinability of the diamond bur on the market for cutting human dentin, or dental enamel.

REFERENCES:
patent: 959054 (1910-05-01), Glover
patent: 2562587 (1951-07-01), Swearingen
patent: 3309772 (1967-03-01), Lieb et al.
patent: 4684346 (1987-08-01), Martin
patent: 4897037 (1990-01-01), Appleby

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