
Maintaining good oral hygiene is essential for preventing tooth discolouration and ensuring overall oral health. While natural teeth can be whitened using over-the-counter products or home remedies, artificial teeth, such as dentures, veneers, and crowns, require different whitening approaches. Dentures, for example, can be soaked in white vinegar, citric acid, or saltwater solutions to remove stains, while veneers and crowns may need professional cleaning and polishing to brighten their surfaces without damaging their delicate structure.
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What You'll Learn

Whitening dentures with vinegar, baking soda, lemon, salt, or denture solution
It is important to note that dentures are different from natural teeth and require different products and methods for stain removal. Home remedies for teeth whitening may cause discolouration and damage to dentures. It is recommended to use products specifically formulated as denture cleansers.
Vinegar
White vinegar can be used to clean dentures by removing plaque buildup and bacteria. To use vinegar for cleaning dentures, mix one part water with one part vinegar. Soak the dentures in the solution overnight and gently clean them with a toothbrush in the morning. It is important to note that partial dentures should not be soaked in vinegar for longer than 15 minutes, as the vinegar can act as a corrosive solution on the metal parts.
Baking Soda
Baking soda has whitening properties and can be used to clean dentures. To use baking soda, simply dab a wet toothbrush in baking soda and gently clean the dentures.
Lemon
Lemon is highly acidic and has a low pH, which can potentially damage tooth enamel. Most dentists do not recommend using lemon to whiten dentures or natural teeth.
Salt
Salt is an effective way to clean and disinfect dentures. To use salt for cleaning dentures, combine a tablespoon of table salt with a large glass of water and soak the dentures in the solution overnight. Rinse the dentures off in the morning before placing them back in your mouth.
Denture Solution
Denture cleaning solutions can be used to disinfect dentures and remove stains and plaque. Soak the dentures in the denture solution overnight. For more stubborn stains, ultrasonic denture cleaning can be performed by a dental professional.
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Using whitening strips, pens, or toothpaste
Teeth whitening strips are a great way to touch up mild discolouration. They contain hydrogen peroxide or carbamide peroxide, which breaks down into hydrogen peroxide when it comes into contact with water. These chemicals penetrate the outer layer of your tooth (enamel) and enter the deeper dentin layer, where they bleach chromogens – the molecules that cause staining. You can buy whitening strips online, at a drug store, or from your dentist.
Whitening pens are another convenient and inexpensive option. Like whitening strips, they use a mild solution containing peroxide to allow oxygen to penetrate and lighten teeth enamel. To use a whitening pen, twist the bottom of the pen so that the liquid seeps into the attached brush, then apply the liquid to your teeth and let it dry for 30 seconds. You don't need to brush or rinse your teeth afterwards – the product will dissolve in your saliva. Whitening pens can be purchased at a drug store, online, or from your dentist, and are typically used twice a day.
Whitening toothpaste is a good option if you're looking for an inexpensive, easy way to remove stains. It contains ingredients that remove more surface stains than regular toothpaste. However, it may take several weeks to see results, and you may need to cut down on coffee and brush your teeth after drinking it.
It's important to note that whitening products should only be used on natural teeth. They typically don't work on crowns or veneers and are not suitable for people with braces. If you're dealing with significant staining, it's best to consult your dentist about professional whitening treatments.
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Whitening kits for sensitive teeth
If you have sensitive teeth, it is important to choose a whitening kit that is designed for sensitive teeth. These kits typically have a lower percentage of active ingredients, such as peroxide, to minimise discomfort. Here are some recommended whitening kits for sensitive teeth:
Crest Whitestrips for Sensitive Teeth
Crest is a well-known brand in teeth whitening. Their Whitestrips for Sensitive Teeth are a top pick for people with tooth sensitivity. The product is easy to use and affordable, with about half the peroxide content of the original version.
Snow Diamond Wireless Teeth Whitening Kit
The Snow Diamond Kit offers a super bright smile with an LED device without causing any sensitivity. The kit includes a whitening serum and an LED mouthpiece that emits a specific wavelength of blue light to activate the serum and erase teeth stains. The kit is gentle and effective, providing brighter, longer-lasting results without causing any discomfort.
Glo Vial Teeth Whitening Gel Treatment Kit
This whitening gel comes in small, squeezable vials with a brush tip for precise application. It is convenient and mess-free, and does not cause any sensitivity thanks to its low peroxide concentration. The kit also includes a hydrating lip balm.
Crest Whitening Emulsions
This whitening kit stands out for its gentle formula, which effectively minimises sensitivity. It hydrates your teeth with hydrogen peroxide suspended in a blend of petrolatum and sorbitan palmitate. The process is user-friendly, allowing you to carry out normal activities during treatment. Despite offering up to four daily applications, it does not cause sensitivity issues.
It is important to note that LED lights can dehydrate teeth, so if you have sensitive teeth, it may be best to opt for a non-LED kit or consult a dentist for advice. Additionally, maintaining good oral hygiene and avoiding certain stain-causing foods and beverages can help prevent tooth discolouration and protect tooth enamel.
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Natural teeth-whitening strategies
Maintaining Oral Hygiene
Excellent oral hygiene is the most important factor in preventing and reducing tooth discolouration. Brushing your teeth at least twice a day, flossing regularly, and cleaning around the gums and the backs of the teeth can protect the enamel, prevent gum disease, and help remove stains. It is also recommended to brush your teeth after consuming foods and drinks that can cause staining, such as coffee, tea, wine, dark sodas, and citrus juices.
Using Fluoride Toothpaste
Fluoride toothpastes can help fight and reverse tooth decay. While some people oppose the use of fluoride, dentists believe it is safe and beneficial for maintaining oral health and preventing tooth discolouration.
Oil Pulling
Oil pulling is a traditional Indian practice that involves swishing oil in the mouth to remove bacteria and improve oral hygiene. Coconut oil is a popular choice due to its pleasant taste and health benefits, including its high content of lauric acid. Other options include sunflower oil and sesame oil. While oil pulling is not a substitute for regular brushing and flossing, it can be a useful adjunctive method for reducing plaque and preventing tooth discolouration.
Baking Soda
Baking soda has natural whitening properties due to its mildly abrasive nature, which helps rub off stains from the tooth surface. It also creates an alkaline environment in the mouth, preventing bacterial growth. Brushing your teeth with a mixture of baking soda and water, or a paste made from baking soda and hydrogen peroxide, can help whiten teeth over time. However, this should only be done occasionally, as hydrogen peroxide may increase tooth sensitivity and is not suitable for long-term use or for those with sensitive teeth.
Enzyme-Rich Foods
Certain enzymes found in fruits like papaya (papain) and pineapple (bromelain) may help whiten teeth. While there is limited scientific evidence, a 2020 study suggested that tooth bleaching gels containing these enzymes have substantial clinical potential for tooth whitening. However, the American Dental Association (ADA) advises against rubbing teeth directly with fruit pieces, as the acid can worsen tooth discolouration.
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Whitening before getting veneers or crowns
While veneers and crowns are made from materials that resemble natural teeth, such as porcelain or ceramic, they are not living tissue. As a result, they are less likely to become discoloured than natural teeth. However, porcelain is susceptible to staining, and veneers and crowns can become stained over time.
If your veneers or crowns have developed stains, you should consult a dentist to discuss your whitening options. While over-the-counter whitening gels, toothpastes, strips, and trays can be used to whiten natural teeth, they are ineffective on veneers and crowns. This is because the whitening material cannot penetrate the strong material of veneers and crowns to remove stains.
To prevent staining on your veneers and crowns, you should maintain good oral hygiene by brushing your teeth at least twice a day, flossing, and using fluoride toothpaste. In addition, you should avoid consuming staining foods and beverages such as coffee, tea, wine, and soda, and avoid smoking.
If you choose to undergo professional whitening procedures for your veneers and crowns, these treatments can help remove stains and restore their bright white colour. Professional whitening can also help increase the lifespan of your veneers and crowns.
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Frequently asked questions
Some natural ways to whiten plastic teeth include:
- Brushing with baking soda and hydrogen peroxide
- Using whitening toothpaste
- Rinsing dentures with white vinegar
- Soaking dentures in lemon juice
Some products that can be used to whiten plastic teeth are:
- Whitening strips
- Mouthwash whitening solution
- Whitening teeth foam
- Whitening powder
- Electric toothbrush with blue LED light
Some general tips to prevent teeth from yellowing include:
- Maintaining good oral hygiene
- Quitting smoking
- Reducing consumption of acidic foods and beverages










































