I was very skeptical about the efficacitée has electric brushes teeth (too accustomed to brushing tradi) ... but on the advice of the dentist (children) were "invested" ... I do not regret !!! my children are volunteer this "chore" and brushing teeth became playful and fun for them and I find that their teeth are visibly more healthy ... so even the parents will put it! I board a elettric these brushes teeth of this brand! I rated this article with 4 stars instead of 5 simply becaufe the price of replacement heads are a little expensive! ^ _ ^