The technology uses ultrasound waves to penetrate the enamel and dentin layers, removing deep stains and discoloration without damaging the teeth or gums. The technology aims to provide noninvasive, painless teeth whitening, according to the company.

That sounds like an innovative approach! It's great to see noninvasive, effective solutions emerging for teeth whitening. Thanks for sharing the details! What is the Patent No. ?

Dear, I saw your question rather late... but nevertheless when searching for patent on Espacenet, you can find quite a few patents about ultrasonic devices for cleaning and whitening teeth; please find here a link to those patents, which could be inspiring to innovate: Espacenet – search results; by combining these IPC/CPC (patent classes) you're in the core of the technology field.

Unfortunately, the Espacenet link cannot be opened. I enclosed a screenshot to illustrate the search strategy...