What does Ultrasonic scaler do - Piezoelectric scaler. Ultrasonic scalers are used to remove calculus rapidly from the tooth surface. The scaling tip vibrates in the ultrasonic range of 20-45 kHz (i.e. 20,000 to 45,000 times per second), with an optimum frequency between 18 kHz and 32kHz.Most of the scaling power is available at the tip, which is cooled with a jet of water.
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