What is ultrasound used to clean teeth and jewelry?

Ultrasonic cleaners use high-frequency sound waves to create vibrations that agitate the cleaning solution and remove dirt, grime, and other contaminants from surfaces. Because ultrasonic cleaning is gentle and does not require harsh chemicals or abrasives, it is well-suited for cleaning delicate items such as jewelry, lenses, coins, and printed circuit boards. The process involves submerging the item in the cleaning solution and turning on the ultrasonic cleaner, which typically operates at a frequency of around 20,000 to 40,000 hertz (Hz). The sound waves cause the cleaning solution to vibrate rapidly, creating microscopic bubbles that implode against the surface of the object, dislodging dirt and grime. This action can effectively clean intricate areas and crevices that may be difficult to reach with traditional cleaning methods.