It’s a fact of nature that people’s teeth tend to darken as they age, yet in this economy where personal appearance is assumed to be paramount to success, teeth whitening has become a billion dollar industry. Aside from natural darkening, such as from changes in the minerals in tooth enamel, teeth do get stained by certain foods as well as drinks like coffee, tea and wine. So tooth whiteners can make some degree of difference in how the teeth appear.
There are several methods used to whiten teeth, some handled in a professional setting like a dentist’s office, and others that can be done less expensively at home. Anyone who watches television will be familiar with the most publicized method, which involves using strips across the front teeth for short periods of time. Other methods involve trays in which whitening gel is placed, which are then set over the teeth. Most of these strips and gels contain types of peroxide, which bleaches stains out of the enamel and sometimes even penetrates the dentin underneath to bleach it as well.
The basic whitening systems used in a dental office are often similar to those used at home. That is, dentists also employ the trays with gel, except the bleaching agent is considerably stronger than what is allowed for home use. Dental professionals can go well beyond the tray and gel method, however. They can even perform teeth whitening with the help of lasers, which speed up the bleaching process. And if other bleaching methods don’t seem to work, a dentist can apply a lighter colored veneer to the surface of the teeth.
What should be kept in mind, however, is that people themselves can do a lot to help prevent their teeth going dark in the first place, so teeth whitening may be less necessary. There’s no question that certain kinds of food and drink, not to mention smoking, will stain otherwise perfectly white teeth. And the color of both the enamel and the underlying dentin can be affected by eating in an unhealthy way and not getting the right minerals in one’s diet. Healthy eating may be the least expensive method of all to whiten one’s teeth.
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