Teeth whitening procedures are not uncommon in the world of dentistry. In fact, they make up a significant portion of the cosmetic dentistry industry’s activities. White teeth look good because we associate whiteness with cleanliness. This is not a recent trend however, as cosmetic whitening of teeth has been dated as far back as the Ancient Egyptians.
The Procedure
Today, the most common in-office dental bleaching procedure is laser teeth whitening. A mouthpiece keeps the lips open and exposes the teeth, while a protective substance is painted over the gums and the bits of gum in between teeth. This is meant to protect the sensitive gum tissue from the following procedures. A high-concentration gel containing hydrogen peroxide or carbamide peroxide is applied to the teeth. These compounds have a bleaching effect but can cause chemical burns, which is why the gums have to be protected.
Ordinarily, these bleaching agents can do much to whiten teeth on their own, but several applications over a period of days or weeks is needed. When they are exposed to high concentrations of light, their whitening powers are amplified. An argon laser is used here, because it produces light without heat and ultraviolet light rays, which could damage the mucous membranes in the mouth. After a few minutes, the tray or mouthpiece is removed and any required clean-up is done.
The Results
Laser teeth whitening can produce dramatic results with little effort. This is a far cry from the troubles of men and women in previous eras. Ancient Egyptians whitened their teeth with a mixture of finely ground pumice and wine vinegar, which they brushed onto the teeth with a toothbrush of sorts. Ancient Romans used human urine, in the belief that it made teeth whiter and kept them firmly in place. The Middle Ages saw the use of files and nitric acid, an advancement to be sure, but far more dangerous. None of these procedures are desirable now, but they point out just how much humans value white teeth.
The results of laser teeth whitening can last a few months, depending on the patient’s lifestyle. Foods and drinks with strong colors like red wine, coffee, tea, as well as smoking can stain the teeth not only before the procedure, but also after it. There are also side effects to this procedure, as with most medical procedures.
Common Side Effects
Chemical burns from the bleaching agent can happen when unprotected mucous membranes and soft tissues come into contact with the agent. Tooth sensitivity is not uncommon, especially after the first few bleaching sessions. Gum irritation can also occur with ill-fitting trays. Lastly, hyperodonto-oxidation or over-bleaching can make the teeth unnaturally white, which can be a disquieting sight.
This procedure is not recommended for pregnant or lactating women, as well as children under 16 years of age. Those with internal staining may require other procedures.
Laser teeth whitening is only the latest in teeth whitening technologies. Perhaps in the future, there will be something better. For today, however, it is the best before attaining whiter teeth with little effort and with quick results.
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