Practical cutting bur and method of training using same for the cutting of human teeth
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United States of America Patent
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Oct 20, 1998
Grant Date -
N/A
app pub date -
Dec 6, 1995
filing date -
Dec 9, 1994
priority date (Note) -
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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.
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