Quip is a medium soft toothbrush with an embedded haptic motor. This is apparently the same kind of motor that your cell phone uses to vibrate, or at least something similar. The bristle motion is the result of this high-frequency vibration. It is an excellent way to turbo-charge your brushing and power away anything that might be hiding out in there. I've had some residual pain from various endodontic procedures and this toothbrush is much more gentle than other electric toothbrushes.
Bottom Line: Yes, I would recommend this to a friend
