Home Whitening Kits Or In-Office Teeth Whitening Typically, teeth whitening procedures start with a dentist. After an In-office examination, the dentist would either do the procedure in his clinic then recommend a home kit for the patients to conduct the treatments or follow up procedures at home. There is however cases when home kits are better used. The dentin is very similar to the enamel except it is not as hard and as shiny and while the enamel is generally white in appearance, the dentin is not. Extrinsic tooth stains forms in the enamel while for the most part, intrinsic stains that show trough the enamel occur in the dentin. First, the tooth enamel is a highly mineralized very hard part of the tooth composed of strand of rod-like crystalline materials. It is an accepted fact that the over the counter medications and formulations will contain less concentration of the bleaching agent. In many products, the concentration will only reach up to 10 percent. For the formulation that are used by the professionals that conduct supervised teeth whitening procedures, the formulation for the peroxide may reach up to 43 percent and the strength of the bleaching agent will depend on the service provider. Right now, these are also considered as cosmetic veneers and they are used to deliver that bright and white smile. Here are some of the major benefits of cosmetic veneers and porcelain veneers: These veneers are best to cover worn enamel. The enamel deteriorates over time and this can be expected. In order to cover the wear and the deterioration, then the porcelain veneers can be used. Even as professionally supervised teeth whitening treatments contain hydrogen peroxide as its active bleaching agent that is safe enough even for home use, over the counter preparations contain carbamide peroxide which is even safer and milder. The effects are the same. While hydrogen peroxide acts faster, carbamide peroxide when left in the mouth for a time divides into urea and hydrogen peroxide that acts on the stains by the oxidation process. The most common methods are using bleaching pens, bleaching strips, gels and natural bleaching, most of which could be obtained from the local pharmacy and dental supply stores. There are however some risks involved when doing teeth whitening at home as some teeth could be sensitive than others and gums could also be irritated that could cause degrees of discomfort.