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Wednesday, August 4, 2004 - 8:30 AM
SES 17.1

Invited: Developments in CVD of Dental Tools - Aspects of Deposition and Characterization

W. Ahmed, University of Ulster, Newtownabbey, United Kingdom; M. J. Jackson, Purdue University, West Lafayette, IN; H. Sein, Manchester Metropolitan University, Manchester, United Kingdom

Diamond coatings are attractive for dental machining applications due to their high hardness, low friction coefficient, excellent wear resistance and chemical inertness. This paper will discuss a number of different processes including chemical vapor deposition and hot filament chemical vapour deposition with a modified vertical filament arrangement for the deposition of diamond films on burs and other surgical tools. Methods of characterizing the quality of the coating will also be described in great detail using techniques such as scanning electron microscopy (SEM) and micro Raman spectroscopy to qualify the use of thin solid films of diamond on burs and tools for use in clinical practice.

Summary: This keynote paper will cover the historical development of the CVD process for the production of dental cutting tools.