End rounded bristles for safe and effective cleaning of teeth and along the gum line. Stimulating bristles massage gums and stimulate circulation. Tongue and cheek cleaner helps remove more bad breath bacteria.* Whitens teeth removes plaque.** *Bacteria that cause bad breath vs. brushing alone with flat-trim toothbrush. **Whitens teeth by gently polishing away surface stains and fights cavities by brushing away plaque.