How do whitening toothpastes work and how effective are they in whitening teeth?
All tooth brushing helps remove stains from the surface of teeth through mild abrasive action. Some whitening toothpastes contain chemical and/or polishing agents that help provide extra stain removal. Over-the-counter whitening products contain a bleaching substance that helps remove stains on the tooth surface but none have the same effect as through your dentist s. Whitening toothpastes can lighten colour about one shade, whereas whitening conducted at your dentist s can make your teeth up to eight shades lighter.
