This new tooth powder whitens teeth without damage

Teeth can lose their brightness over time, even with consistent brushing. Staining can come from genetics or from everyday foods and drinks like coffee and tomatoes. While chemical whitening products are widely used, they can sometimes harm tooth enamel. To address this, researchers reporting in ACS Nano have created an experimental whitening powder that is activated by the vibrations of an electric toothbrush. In laboratory tests, the system not only lightened stains but ...