Cavity Preparations | University of Toronto Faculty of ...
In the late 1950s high-speed rotary instruments were introduced to the profession. These are air turbine-driven and rotate at speeds exceeding 400,000 rpm. 2,3 Air-water spray is integrated with these handpieces to ensure proper cooling and prevent over-heating of tooth tissues. When tungsten carbide burs are used in these handpieces, cavity ...
Get Price