Just as natural teeth can become stained and discoloured over time, so can dentures and false teeth. Consistent use of things such as tobacco, coffee, tea and red wine will darken and stain your dentures over time. Regular cleaning and soaking of the dentures can help remove the stains. If the stains do not go away after regular cleanings, see your dentist about having some or all of the teeth professionally cleaned or replaced.
Place a towel in the sink or fill it with water. This will keep the dentures safe should they fall out of your hands while you are cleaning them. Rinse them with water before brushing them in order to clean out any debris. Choose a small, soft toothbrush or one that is specially made to clean dentures. You also can buy paste that is specially made for dentures. Brush your dentures twice a day and after meals, as you would with natural teeth. Frequent brushing will keep the stains from setting in.
Soak the dentures in an effervescent denture solution. There are a number of them on the market; ask your dentist for a recommendation for your specific type of dentures. These solutions contain enzymes and oxidants that break down food particles, odours and stains. Follow the manufacturer's instructions for the solution. Many soak for only one hour; some can soak overnight.
Visit your dentist for professional cleanings. Just as with natural teeth, food particles can get stuck in crevices, and plaque can build up. A professional cleaning benefits not only your dentures, but your gums as well. If cleaning does not do the trick, you can have either just the stained teeth or the entire set replaced.
Take your dentures out at night and soak them in water or a soaking solution that is appropriate for all-night soaking. Do not use hot water, because it can warp the dentures.
Do not use bleaching agents to whiten the teeth. Bleach is not compatible with denture materials such as porcelain or plastic, and it could harm the dentures.