In Finland there is a profession called dental hygienist, whom I visit once a year. They clean up my teeth with an ultrasound device since many years, removing tartar.
I would not call it exactly painless though.
I would not call it exactly painless though.
You might not have the dentist or dental hygienist use the probe very often. When they do it's a rounded straight tip device, and they usually call out numbers to an assistant for how deep under the gumline the probe can reach. That's the procedure this device would replace. If nothing else it's an improvement because you don't need an assistant to record the numbers, and if someone has bad gum disease it might hurt them when you poke in there with a probe.
In this was at least it looks like the US system is better. Of course there is no way nuance can be expressed in a short forum like this, but maybe you need to look at the Finland system to see if it is really good enough.