Take the removable retainer out to clean your teeth. It is important that you brush your teeth well for at least 2 minutes, twice daily. Use a fluoride toothpaste. You should also gently clean the retainer with a toothbrush and cold water over a sink, taking care not to drop it. To further protect the teeth, use an alcohol-free fluoride mouth rinse daily at a different time to when you brush your teeth. Avoid eating or rinsing for 20 minutes after use. Sugary snacks/drinks and poor cleaning of your teeth and retainer may lead to permanent damage to your teeth.