Teeth Whitening Information
Currently there are two ways to whiten your teeth:
- Peroxide-containing whiteners or bleaching agents; and
- Whitening toothpastes (dentifrices).
Peroxide-containing whiteners or bleaching agents
There are many whitening options currently available to consumers both from the dentist as well as from retail outlets.
In a water-based solution, carbamide peroxide breaks down into hydrogen peroxide and urea, with hydrogen peroxide being the active bleaching agent. Other ingredients of peroxide-containing tooth whiteners may include glycerin, carbopol, sodium hydroxide and flavouring agents.
Accumulated clinical data on carbamide peroxide continue to support both the safety and effectiveness of this kind of tooth-whitening agent. The most commonly observed side effects to hydrogen or carbamide peroxide are tooth sensitivity and occasional irritation of the soft tissues in the mouth (oral mucosa), particularly the gums. Tooth sensitivity often occurs during early stages of bleaching treatment. Both of these conditions usually are temporary and stop after the treatment.
Remineralizing Gel:
This contains Calcium carbonate a naturally occurring substance in the tooth structure, through whitening and general aging of teeth small pits or microscopic holes develop in the enamel which can lead to tooth decay and sensitivity, these holes lead directly to the tooth nerve. Using remineralizing gels regularly has been shown to fill these cavities, reducing sensitivity and improving the general health of teeth.
Professionally applied bleach whiteners
There are many professionally applied tooth whitening bleach products. These products use hydrogen peroxide in concentrations ranging from 15 percent to 35 percent and are sometimes used together with a light or laser, which reportedly accelerates the whitening process. Prior to application of professional products, gum tissues are isolated either with a rubber dam or a protective gel. Whereas home-use products are intended for use over a two-to-four week period, the professional procedure is usually completed in about one hour. Currently, all of the professionally applied whiteners that have the ADA Seal contain 35 percent hydrogen peroxide, although this concentration is not a requirement of the program.
As with the home-use carbamide peroxide bleach products, the most commonly observed side effects of professionally applied hydrogen peroxide products are temporary tooth sensitivity and occasional irritation of oral tissues.
Whitening toothpastes
Whitening toothpastes (dentifrices) contain polishing or chemical agents to improve tooth appearance by removing surface stains through gentle polishing, chemical chelation, or some other non-bleaching action. As these only deal with the surface layer the same level they are not as effective as peroxide based teeth whitening products.
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