I bought the equipment for cleaning of prosthetic full supply. After half a year of daily use, I am very disappointed. Despite daily cleaning tablet, brushing and ultrasonic cleaning with the device itself "tartar" is deposited. 20 watts of power is probably too little.
Conclusion: not suited for dental cleaning, possibly good for it so what in the small parts cleaning. In my opinion, are not enough to solve 20 Watt ultrasonic power to deposits, the next device is larger and mind. Have 70 watts Cleaning power.