I would rate this no stars!!! See your dental professionals!
Please do not buy, see your dentist/hygienist regularly for a THOROUGH PROFESSIONAL CLEANING AND EXAMS AND CANCER SCREENINGS!!!  This is a cheap product, inferior metal that can scratch and gouge the enamel, dentin, roots and gums leading to infection! Plus the sonic mechanism if held too long in one spot can damage the pulp causing pulpitis and possible root canal therapy! Plus the tartar that causes the most damage lies below the gums, which will lead to periodontitis ( gum disease and tooth loss) if not professional scaled off at least every 6 months.
Rating: 1 stars