What is teeth whitening?
Teeth whitening is a cosmetic dentistry procedure designed to reduce or eliminate the discoloration of enamel and dentin in a client's teeth caused by cigarettes, coffee and other staining agents. The cosmetic dentist uses a highly concentrated hydrogen peroxide gel during the in-office treatment, often accelerated through the use of a low-level laser, or supplies the client with a milder gel and a custom-made mouth tray for the at-home bleaching treatment.

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How does it work?
The cosmetic dentist applies gel to the client's teeth, either by hand or through a mouth tray specifically fitted for the client. As the hydrogen peroxide in the gel breaks down, oxygen is absorbed into the enamel and dentin to bleach the tooth stains. The tooth's structure remains the same even as the color of the tooth becomes lighter. In some cases, when the dentist applies gels to a client's teeth, a laser is used to help the gel penetrate the outer layer of the teeth and hasten the laser teeth whitening process.

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What causes tooth discoloration?
There are many causes, from aging, trauma and old fillings to staining agents like cigarettes, coffee and other dark-colored drinks.

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Who are the best candidates for teeth whitening?
Anyone who has discolored teeth caused by the factors mentioned above is a candidate for teeth whitening. However, teeth whitening is not always the best treatment for discolored teeth, particularly for people who have other oral health problems. A consultation with a board-certified cosmetic dentist can help clients determine the best course of action for their particular needs.

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How quickly can results be seen?
Most clients can see whiter teeth after a 40-minute session that includes several applications of gel and, in some cases, the addition of laser dentistry. Others may require several sessions, including at-home treatments, before results become noticeable. More frequent applications and/or longer wearing periods (for in-home treatment) can bring about faster results.

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How long do the teeth whitening results last?
The duration of the results depends on the individual client, but generally speaking, the teeth will remain whiter than they were. Some clients may require ongoing or follow-up treatments, though, particularly if they continue to smoke cigarettes, drink coffee or use other staining agents.

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Is the procedure safe?
Yes. Research and clinical studies show that teeth whitening procedures involving the use of hydrogen peroxide and performed by a board-certified cosmetic dentist are safe for both the teeth and gums.

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Are there side effects to the treatment?
Some clients experience tooth sensitivity and gum irritations, and mild cases of temporo-mandibular joint disorder and/or nausea or a sore throat from the bleach have been reported in some clients. A large majority of clients report no side effects, though.

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