And if the organization is to be consulted, it is best to ask for assistance from your dentist before buying impulsively. Bleaching is one of the roles performed by the whitening paste. Now did you know that the efficacy of the bleaching will depend on the amount of peroxide used in the toothpaste? And will also depend on the time used in contact with the teeth? The mouthpiece trays that are available for supervised whitening sessions are considered as more reliable as compared to the ones that are available over the counter. The basis for this is simple. At least with the dentist-supervised procedures, the dentist can visit the person's home and can customize the site of the mouthpiece tray. More concentration of the bleaching agents however means faster results compared to home treatment methods that are very much "watered down" to insure safety. Some of the risks that are likely to occur are sensitivity to touch, temperature and pressure. For persons with sensitive teeth though, toothpastes containing potassium nitrate are recommended. Some strips uses hydrogen peroxide but only with 6% strength where normal concentration ranges from 10 to 20%. Since carbamide peroxide is only half the strength of hydrogen peroxide, the visible effect will take about two weeks of continued use, much longer than bleaching trays that contains hydrogen peroxide and in-office treatments but because it is, teeth whitening strips is gentle and comfortable to even those with very sensitive teeth and gums. The services will vary to address different needs and preferences and the costs are minimal as well thus making these professional services easy for many people interested to improve the quality of their smile. In today's dental cosmetic market, the most popular procedure is called the laser tooth whitening. Second, most tooth bleaching agents such as gurgles and gels contain peroxide. It is not entirely true that using bleaching agents containing such reduces the enamel of the teeth over time. If it does, it is actually very negligible and so does not have adverse effect on the tooth. Sure there could be, in some cases, mild irritation and tooth sensitivity during the initial stages but these usually are gone after a few days of treatment.