Dentists say that the most important part of tooth care happens by brushing and flossing properly, along with regular dental checkups. Doing this can help prevent tooth decay and gum disease. If you're like most people, you don't exactly look forward to facing a dentist's drill. So wouldn't it be better to prevent cavities or tooth decay before they begin. Brushing twice times a day, flossing twice a day, and rinsing your mouth out with mouth wash once a day will keep you gums and teeth protected and clean.