We have tested three Megasonex M8 toothbrushes with different heads and tongue scrapers (can be purchased separately). This is a very detailed review not only testing the product itself but also explaining well the science behind ultrasound cleaning and answering a series of additional questions in the Q&A section. Please note that there will be also an additional article on ultrasound technology in dental applications as well. Disclaimer: this is NOT a sponsored article or any kind of an editorial - we have purchased our toothbrushes on our own and their manufacturer did not interfere in the review process at any step. This is a fully independent test and we…