dental high speed handpiece
A dental handpiece is a precision-built mechanical device designed for use with rotary instruments, such as burs, stones, wheels, and discs, used in dental treatment. Handpieces may be air driven, electric, or compressed gas (for surgical handpieces). Surgical handpieces are discussed in Dental Technician, Volume 2, Chapter 5, “Oral Surgery Assistance.” Handpieces can be classified according to the revolutions per minute (rpm) or speed at which they operate. One type is the low- or slow-speed, and the other is referred to as the high-speed contra-angle. Both the low- and high-speed handpieces use an air system to operate several parts of the handpiece. The main function of the air is to rotate the air turbine or vane drive. Basically, this means the air system is the main power source for these handpieces. Fiber optic accessories attached to dental handpieces allow the provider to operate handpieces with a light source and is discussed in this section