David C Appleby
Dentist in Tavistock, NJ
License number
New Jersey 03049
Issued Date
Sep 16, 1981
Category
Dentistry
Type
Specialty Permits
Address
Address
Tavistock, NJ
Professional information
Dental Bur
US Patent:
4897037, Jan 30, 1990
Filed:
Dec 8, 1988
Appl. No.:
7/281168
Inventors:
David C. Appleby - Haddonfield NJ
International Classification:
A61C 306
US Classification:
433166
Abstract:
A dental bur includes a shank adapted to be held by a dental drill and an abrasive portion. The lowermost abrasive portion at the free end of the bur is of a different color from the remaining abrasive portion. As a result, a dentist can observe the colored section to determine the depth of the bur tip under the gum line. Preferably, the bur is formed by coloring the corresponding section of the substrate from which the bur is made and then coating the entire working surface of the bur (colored and uncolored) with diamond chips.