Although dentures resemble real teeth and are equally prone to staining, they require special care and cleaning methods. Yellow and brown stains on dentures from smoking are difficult to remove with routine brushing. Light nicotine stains usually respond to home care and soaking, but heavy stains may require a professional cleaning to prevent damage.
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Place a folded bath or hand towel at the bottom of your sink to prevent your dentures from chipping or breaking if you drop them during the cleaning process.
Rinse your dentures in warm, running water. Avoid using very hot water, as this may damage or warp your dentures. Brush them with a soft toothbrush and denture paste to remove food and other debris.
Soak your dentures in an effervescent denture solution, which will remove most stains, including nicotine. Check the product packaging to determine how long to keep your dentures in the solution; do not soak them overnight.
Remove your dentures from the denture cleaning solution and brush them again. Use the toothbrush to clean inside every crack, then rinse well.
Soak the dentures in baking soda and water if nicotine stains are still present. Mix a couple of teaspoons of baking soda into a bowl of warm water and soak your dentures for 20 minutes or longer.
Visit your dentist for a professional cleaning and whitening. Do not attempt to bleach your dentures at home, which may damage or weaken plastic and porcelain dentures.