Check out the carbide burrs that are used in the dental profession. The only thing is that they are 1/16" shank diameter. The oral surgery burrs are a bit longer in length. Here are a couple of suppliers.

http://www.sswhiteburs.com/carbide_burs_guide.php
http://www.microcopydental.com/neoburr.html

Or search Carbide Dental Burrs.