Surprisingly good!!!
I wished i had taken a before picture, its was 13 years of plaque.  Its not as strong as what the dentist uses, but it will break the plaque off. I do one tooth a night untill i can get them all ckean, then will do once a week.<br />When you first turn it on you will think its not working.  It will only vibrate when it touches a tooth.  Took me 2 nights to get the heavy plaque off... BUT IT ACTUALLY WORK!!! CRAZY i know,  right!! That something this cheap works!! Wished i would have gotten it sooner!!<br />I would have given it 5 stars if it were a little stronger, but since not being sold as a professional dental tool i can understand why its not more powerful,  but rest assured it will work and brake loose the years of plaque.
Rating: 4 stars