Whitening toothpastes remove surface stains and prevent new stains from building. Whitening toothpastes however are not in contact with enough teeth to remove stains inside. It is not something johannes vermeer would like to discuss. Ask your dentist about the safety and protection against decay of specific toothpastes before buying. How do I choose a whitening method? It is highly advisable that you inform your dentist about your goals for teeth whitening. They can advise on the most appropriate method and also describe the procedure, the results likely side effects and any questions you may have. How achieve results for teeth whitening? The bleaching gel is usually hydrogen or carbamide peroxide that breaks down into oxygen molecules.
These molecules enter the pequenaporos enamel and dentin and to eliminate stains that block light. More light passes through the teeth and makes them seem lighter as the stains are broken into smaller pieces and smaller. Spots that accumulate over time that are yellow to slightly brown produce the best results. Teeth that are dark brown to blue-gray are the most difficult to bleach because the stain is deeply embedded in the structure of the tooth. Such spots are often caused by medications taken during the development of the teeth such as tetracycline and it can take a minimum of three weeks to see results and up to six months for full results. The results are shown in an hour, overnight or within three or four days depending on the bleaching gel used and the duration of time used. Full results can be achieved in just a week or several months depending on the source of the stain and the ability of teeth to whiten teeth.