Abstract: The working surfaces of dental and surgical instruments are coated with a ceramic material formed by plasma spraying of a composition including a cemented carbide matrix and a ceramic dispersion to form a hardened surface with improved gripping ability. The cemented carbide matrix preferably contains tungsten and/or chromium carbide and/or cobalt. The ceramic dispersion preferably consists of alumina or other oxides.
Type:
Grant
Filed:
April 7, 1997
Date of Patent:
September 1, 1998
Assignee:
Miltex Instrument Company
Inventors:
Robert B. Pugliesi, Salvatore Cucinella