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.f
ultrasonic scaler is gentler to tooth structure which is especially important when frequent cleanings are needed. The smaller tips of an ultrasonic scaler can be more effective at cleaning under challenging nooks and crannies, helping to eliminate more disease-causing bacteria.