Ultrasonic cleaners (US cleaners) are a precleaning device before the use of an autoclave, used to clean and disinfect dental instruments by removing debris and particles that stick to the surfaces of these instruments. These devices transmit ultrasonic waves of frequencies varying from 20-400 Khz into a liquid (special detergents used only with US cleaners) resulting in the formation of millions of bubbles. These bubbles then burst and disrupt the chemical bond between the debris and dental instruments. They are also used in conjunction with proteolytic enzyme solutions to further facilitate the cleaning process.
Major manufacturers of US cleaners include Brandmax, iSonic, Inc, and Tuttnauer.