Due to the increase of over the counter teeth whitening products there is an increased fear among users that teeth bleaching may not actually be safe. This fear is often contributed to old techniques from the eighties that did in fact destroy enamel when used in excess. However, recent studies have shown that in current teeth whitening products although there may be slight, temporary, sensitivity side effects, for the most part, teeth whitening products only pose a threat if they are misused or if directions are not heeded.
Most over the counter teeth bleaching products contain only a 10% percent concentrate of the active oxidizing agent carbamide peroxide. While it is possible that excessive overuse can result in some damage to teeth, the amount of treatments that one would have to perform on their teeth to reach this level is virtually impossible by any consumer who follows directions.
Over bleaching of the teeth can lead to a slightly gray translucent discoloration in the corner of the mouth. If this starts to occur, it should serve as a warning sign that a user should stop using the bleaching product before they cause permanent damage.
In addition, a small amount of people may experience increased gum sensitivity if they leave the mouth guard on for excessive periods of time or if the mouth guard does not fit properly.
The only other main concern associated with teeth whitening products is focused on smokers who use the products since the smoke and peroxide combine to form a mixture that has a negative effect on dental tissue already damaged by smoking.
Link: EZine Articles
http://ezinearticles.com/?Is-Teeth-Bleaching-Safe?&id=1352506
Jane Pennington
www.teethwhiteningsmiles.com



