It's called the waterlase, and it is an alternative to the traditional drill that removes tooth decay, but without the noise and vibration.
The waterlase works using water particles which get energized, called hydrokinetic energy.
The procedure also reduces the need to use painful anesthetic needles.
However, the laser is not for everyone. It works on virgin teeth or new decay. And it cannot be used with metal so it's not an option if you're replacing silver fillings.
Plus, the equipment is very expensive it's not widely available to dentists.
But, dentists say it may decrease the chances of needing a route canal in the future because it sterilizes the tooth and removes all the bacteria that is in that place.