With age, the teeth darken because the enamel wears out, making the dentin (tissue that is underneath and determines the dental color) more visible. The dentin becomes denser, which makes the teeth darker. The constant consumption of coffee and other foods and beverages that have large amounts of dyes in their composition interferes with pigmentation, as well as genetic factors and poor hygiene. In addition, the use of tobacco and even some medications influence the shade. There is a genetic limit for each person, as far as whitening can benefit that patient. It is important to discuss your expectations with your dentist for the correct indication of the procedures necessary to achieve the result expected.
It is important to warn that the whitening pastes for sale are mostly abrasive and irreversibly damage the tooth enamel.
Homemade tooth whitening:
Homemade bleaching requires more patience because it takes longer to get results than lasers in the office. It is made with the help of silicone trays filled with a whitening gel and has to be applied every night for 1 to 3 weeks or according to the indication.
Laser tooth whitening
This method is done exclusively in the office, using a gel with a higher concentration of whitening active. Laser treatment brings effects more quickly and may take 1 or 2 sessions of 90 minutes.
Contraindications for treatment:
- problems with enamel formation (white spots) and hypersensitivity;
- bleeding gums;
- patients with resin restorations, veneers, lenses or porcelain crowns will not change the color, and maybe differently colored after the teeth are whitened and require replacement;
- cavities should be treated before teeth whitening.
What not to do during treatment:
- avoid foods with strong colors;
- avoid coffee, tea, red wine, drinks with dye;
- Avoid smoking.