Can't Use, what a waste of money. The vibration (sonic) is not compatible with a human mouth. The vibration is too extreme and I can't stand it enough to complete brushing.
The proof in the pudding will be at my next visit at the dentist.I have had plaque build-up by using a regular tooth brush my whole life.At my next visit to the dentist--no plaque great product Plaque-bad product.The jury is still out.
This is the first time I have used a Sonicare toothbrush. It is easy to use and does a great job of cleaning my teeth. I would recommend it to my friends.