this review title is: great for a deep clean and the content is: this will destroy any tartar buildup you might have but it takes patience use the corner edge and work it up and down along the surface of tartar buildup and the device will slowly remove small layers at a time be careful not to dig into your tooth as i am sure this could potentially damage your tooth with over use.there are other information for this review, one is this reviewer did purchase it and the other is 0 people think this review is helpful.