A dental micromotor handpiece is a rotary instrument used for cutting, polishing, and drilling. It connects to a control unit with adjustable speed. Typical specifications include size, speed range, torque, noise level, and shank compatibility (e.g., 2.35 mm). In dental laboratories, the micromotor drives drilling of semi‑hard materials. In clinical settings, the control unit regulates torque and speed. Key selection factors: compatibility, speed range, torque, power supply, noise level, budget, and service ability.