Whitening is unlikely to cause serious side effects, although some people's teeth may become more sensitive for a short while. You may get mild gum irritation as well. Women should not have their teeth whitened while pregnant. The effect of the whitening materials on the development of the fetus is not known. Since the procedure is cosmetic, it should be postponed until after delivery.
Move the brush across the teeth using a small circular motion (if using an electric toothbrush, hold it at the same angle against the teeth and gum line and let it do the work). Continue with this motion cleaning one tooth at a time. Keep the tips of the bristles against the gum line. Avoid pressing so hard that the bristles lie flat against the teeth. (Only the tips of the toothbrush clean the teeth.) Let the bristles reach into spaces between teeth.
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Risks: I’m not a fan of these light systems and won’t use them in my practice. At best, they’re safe, but they won’t come close to achieving the results of custom trays or whitestrips. At worst, accelerating the chemical reaction damages the tooth. This can lead to premature aging and yellowing and may require future dental work if the tooth dies prematurely. Straumann-Dental Implant Surgery-Step by Step- Part 1.
Intrinsic stains are those that form on the interior of teeth. Intrinsic stains result from trauma, aging, exposure to minerals (like tetracycline) during tooth formation and/or excessive ingestion of fluoride. In the past, it was thought that intrinsic stains were too resistant to be corrected by bleaching. Today, cosmetic dentistry experts believe that even deep-set intrinsic stains can be removed with supervised take-home teeth whitening that is maintained over a matter of months or even a year. If all else fails, there are alternative cosmetic solutions to treat intrinsic staining, such as dental veneers. Dental Implants London - WATCH WARNING