Lot of 6. The world of healthy smiles.Toothbrush Colgate-Palm dentists and hygienists recommend replacing your toothbrush every 3 months. Uses: Fits your teeth and mouth to get your teeth really clean. Two levels of bristles fit the contours of your teeth to clean the surfaces and in between. Diamond-shaped head narrows at tip for easy access to back teeth. Rubber gripped handle for better control.