Tooth whitening is most often done using peroxide-based bleaching agents. At-home systems contain from 3% to 20% peroxide (carbamide or hydrogen peroxides). In-office systems contain from 15% to 43% peroxide.
Generally, the stronger the solution and the longer you keep it on your teeth, the whiter your teeth become. But the higher the percentage of peroxide in the whitening solution, the shorter it should stay on your teeth. Keeping it on longer will dehydrate teeth and increase tooth sensitivity.
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There are pros and cons to each option, but before you try at-home tooth-bleaching kits, talk to your dentist. Not everyone will see good results. Bleaching will not whiten porcelain crowns or tooth-colored composite bondings.
Teeth whitening done by your dentist can get teeth brighter faster. The bleaching solution is usually much stronger than that in at-home kits. Also, your dentist can use heat, light, or a combination of the two to speed and intensify the whitening process.
The most dramatic results -- teeth generally get three to eight shades brighter -- usually take several 30- to 60-minute in-office visits. Some dentists use techniques that can be done in a single 2-hour appointment (such as the Zoom system). The cost of in-office teeth whitening varies, but can range from $500 to $1,000.
The first step toward whiter teeth is to practice good oral hygiene at home. Brush your teeth with fluoride toothpaste or toothpaste with baking soda twice a day, floss at least once a day, and drink fluoridated water.
In this traditional Indian remedy, you swish a spoonful of sesame or coconut oil around your mouth for 15-20 minutes per day. Proponents say it can whiten teeth as well as improve your overall dental health. But there's little scientific evidence that it works.
Whether you use an at-home tooth-whitening system or have your teeth bleached by a dentist, you can help maintain the results by regularly brushing and flossing and keeping up with dental appointments.
Also, avoid acidic foods and beverages, those that are rich in tannins (substances found in plants that have an astringent quality), and deeply colored ones that could stain your teeth. These include:
Tooth bleaching can make teeth temporarily sensitive -- or be uncomfortable for people who already have sensitive teeth. When used incorrectly, home kits can also lead to burned -- even temporarily bleached -- gums.
Teeth whitening lightens your teeth and removes stains using ingredients such as hydrogen peroxide. There are many safe and effective ways to whiten your teeth, including professional treatment at your dentist's office and over-the-counter products you use at home. Whichever method you choose, it's important to seek your dentist's advice and follow the directions carefully.
Teeth whitening is ideal for people who have healthy, unrestored teeth (no fillings) and gums. Individuals with yellow tones to their teeth respond best. But this cosmetic procedure is not recommended for everyone.
All toothpastes remove surface stains because they contain mild abrasives. Some whitening toothpastes contain gentle polishing or chemical agents that provide additional stain removal effectiveness. You might spend $1 to $20, though any prices may vary.
Whitening toothpastes remove surface stains only and do not contain bleach; over-the-counter and professional whitening products contain carbamide peroxide or hydrogen peroxide that lightens the color deep in the tooth. Whitening toothpastes can lighten the tooth's color by about one shade. In contrast, prescription strength whitening conducted in your dentist's office can make your teeth three to eight shades lighter.
Whitening gels are clear, peroxide-based gels applied with a small brush directly to the surface of your teeth. Instructions vary depending on the strength of the peroxide. Follow the directions on the product carefully. Initial results are seen in a few days, and final results last about 4 months. A full course takes between 10 and 14 days. You may need to apply them twice a day. You can buy whitening strips and gels from your pharmacy, dentist, or online for around $10 to $55.
Whitening strips are very thin, virtually invisible strips that are coated with a peroxide-based whitening gel. The strips should be applied according to the instructions on the label. Initial results are seen in a few days, and final results last about 4 months.
Among the newest whitening products available are whitening rinses. Like most mouthwashes, they freshen breath and reduce dental plaque and gum disease. But these products also include ingredients, such as hydrogen peroxide in some, that whiten teeth. Manufacturers say it may take 12 weeks to see results. You just swish them around in your mouth for 60 seconds twice a day before brushing your teeth. However, some experts say that rinses may not be as effective as other over-the-counter whitening products. Because a whitening rinse is only in contact with the teeth for such a short time -- just 2 minutes a day compared to 30 minutes for many strips -- it may have less of an effect. To give whitening mouthwashes a boost, some people rinse first and then brush their teeth with a whitening toothpaste. Be ready to spend around $5 per bottle.
Tray-based tooth whitening systems, purchased either over-the-counter or from a dentist, involve filling a mouth guard-like tray with a gel whitening solution that has a peroxide-bleaching agent. The tray is worn for a period of time, generally from a couple of hours a day to every day during the night for up to 4 weeks and even longer (depending on the degree of discoloration and desired level of whitening). You can buy tray-based tooth whitening systems from your nearest pharmacy for around $30 or get a custom-fitted tray from your dentist for $150 to $600.
In-office bleaching provides the quickest way to whiten teeth. With in-office bleaching, the whitening product is applied directly to the teeth. These products can be used in combination with heat, a special light, or a laser. Results are seen in only one, 30- to 60-minute treatment. But to achieve dramatic results, several appointments are usually needed. However, with in-office bleaching, dramatic results can be seen after the first treatment. This type of whitening is also the most expensive approach.
Strength of bleaching agent. Over-the-counter products and dentist-supervised at-home products usually contain a lower strength bleaching agent, with about a 10% to 22% carbamide peroxide content, which is equivalent to about 3% hydrogen peroxide. In-office, professionally applied tooth whitening products contain hydrogen peroxide in concentrations ranging from 15% to 43%.
Mouthpiece trays. With dentist-supervised at-home bleaching products, your dentist will take an impression of your teeth and make a mouthpiece tray that is customized to exactly fit your teeth. This customization allows for maximum contact between the whitening gel, which is applied to the mouthpiece tray, and the teeth. A custom-made tray also minimizes the gel's contact with gum tissue.
Over-the-counter whitening products also contain a mouthpiece tray, but the "one-size-fits-all" approach means that the fit will not be exact. Ill-fitting trays can irritate the gum and soft tissue by allowing more bleaching gel to seep onto these tissues. With in-office procedures, you'll get the bleaching agent applied directly to your teeth.
Additional protective measures. In the office setting, your dentist will apply either a gel to the gum tissue or use a rubber shield (which slides over the teeth) prior to treatment to protect your gums and oral cavities from the effects of the bleaching. Over-the-counter products don't provide these extra protective measures.
Supervised vs. unsupervised process. First, your dentist can perform an oral exam and consider your complete medical history, which can be helpful in determining if bleaching is an appropriate course of treatment based on the type and extent of stains, and the number and location of restorations. Your dentist can then better match the type of stain with the best treatment, if appropriate, to lighten those stains.
When your dentist does it, they'll likely want to see you a couple of times to clear up any questions about the directions, to make sure the customized tray fits properly, to check your gums for signs of irritation, and to generally see how the process is working. With over-the-counter bleaching products, you're on your own.
Age and pregnancy issues. Bleaching is not recommended in children under the age of 16. This is because the pulp chamber, or nerve of the tooth, is enlarged until this age. Teeth whitening under this condition could irritate the pulp or cause it to become sensitive. Teeth whitening is also not recommended in pregnant or lactating women.
Sensitive teeth and allergies. Individuals with sensitive teeth and gums, receding gums, or defective restorations should consult with their dentist prior to using a tooth-whitening system. Anyone allergic to peroxide (the whitening agent) should not use a bleaching product.
Gum disease, worn enamel, cavities, and exposed roots. Individuals with gum disease or teeth with worn enamel are generally discouraged from undergoing a tooth-whitening procedure. Cavities need to be treated before undergoing any whitening procedure. This is because the whitening solutions penetrate into any existing decay and the inner areas of the tooth, which can cause sensitivity. Also, whitening procedures will not work on exposed tooth roots, because roots do not have an enamel layer.
Fillings, crowns, and other restorations. Tooth-colored fillings and resin composite materials used in dental restorations (crowns, veneers, bonding, bridges) do not whiten. Therefore, using a whitening agent on teeth that contain restorations will result in uneven whitening -- in this case, making the teeth without restorations appear lighter than those with restorations. Any whitening procedure should be done prior to the placement of restorations. 152ee80cbc