Very powerful
Almost too powerful! When I first started using it I didn't really like it because of how powerful it was but now that I've been using it for about the last month or so, I actually find it great. Battery lasts forever - I actually haven't charged it since I started using it so that's great as well. We'll see how good it actually is when I go to the dentist later this year but so far so good!
Rating: 5 stars