In addition to a healthy diet (low in sugar and acid) and regular visits to the dentist (every six to twelve months), the following steps should be part of your daily oral hygiene routine in order to preserve the beautiful brightness of your natural teeth: Brushing your teeth twice a day for three minutes, preferably with a fluoride-containing toothpaste and an electric toothbrush. Thoroughly cleaning the spaces between your teeth with dental floss and/or interdental brushes. Cleaning the tongue with a tongue brush or tongue scraper. Regular use of antibacterial mouthwashes.