contra-angle handpiece

contra-angle handpiece,

a handpiece (dental drill) in which two or more angles or bends are used to set the shaft at a desired angle to access hard-to-reach areas of the oral cavity.

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handpiece,

n an instrument that is used to hold rotary instruments in the dental engine or condensing points in mechanical condensing units. It is connected by an arm, cable, belt, or tube to the source of power (e.g., motor, air, water).

handpiece, air-turbine,

n a handpiece with a turbine powered by compressed air.

handpiece, contra-angle,

n a binangled instrument for use with the dental engine; permits access to areas difficult or impossible to reach with a straight handpiece.

handpiece, high-speed,

n a type of rotary or vibratory cutting tool that operates at speeds above 12,000 rpm. It is propelled by gears, a belt, or a turbine. Generally classified as an air turbine, a hydraulic turbine, or a high-speed handpiece on a conventional dental engine.

handpiece, high-speed, ultra,

n a handpiece designed to permit rotational speeds of 100,000 to 300,000 rpm.

n a monangled instrument used with mechanical condensers to reach some operating areas.

handpiece, straight,

n a handpiece whose axis is in line with the rotary instrument.

handpiece, water-turbine,

n a handpiece with a turbine powered by water under pressure.