For extreme cases of discolored set of teeth, the porcelain veneer can be used as well. When used and fitted the way, these veneers can promise longevity and will surely enhance the smile and the whiteness of the teeth. Another complementary role of the veneers is that its use can help protect the surface of the tooth. The nice thing is that manufacturers and cosmetic producers and practitioners are all aware of these needs. And that they swamp the market with goods and services that can address this concern. And the teeth whitening paste is one answer offered and being tried by millions in order to whiten their teeth. Extrinsic staining and intrinsic staining are the two basic types at which the teeth develop stains and discoloration. Extrinsic stains are developed in the surface of the teeth that resulted from the accumulation of food debris and color. While superficial stains and discoloration could be removed by prophylactic cleaning and brushing, there are stains that are a little more stubborn and could accumulate between the spaces of the tiny cracks in the tooth that would need bleaching to remove the stains. Photographs will then be taken which will be used as a benchmark when assessing the whitening progress. The shade of your teeth will also be measured thru the Vitapan shade guide to arrive at a correct shade that your teeth should have. The teeth are not expected to shade lighter than its natural cast. What it does not bleach are crowns, veneers, restorations and other materials relative to tooth repairs. So while the teeth are becoming whiter with every application, those that are not retain its original color and results to uneven coloration. The best part is, unlike most cosmetic procedures, teeth whitening are really very inexpensive. You will not find these protective measures for the over-the-counter medications and formulations. In terms of cost? There is no argument in here. The dentist-supervised procedures are considered pricier if compared to the medications and formulations that can be had over the counter. In the bigger picture you can sense that the supervised teeth whitening sessions are known for their added benefits and advantages for the person.