Why do teeth darken?

The teeth can be covered with plaque or tartar that stain tobacco, coffee, tea or red wine. Scaling and polishing of teeth sufficient to eliminate these tasks. Staining can be accommodated in the enamel and the dentin. This can be caused by tooth decay, tobacco, certain medications taken in infancy as tetracycline or excessive fluoride consumption.

Cons-indications of money laundering

• People younger than 16 because the pulp chamber is larger, so the teeth are more sensitive during bleaching.
• Pregnant or breastfeeding women.
• People with sensitive teeth or gums, including sensitivity associated with gingival recession or restorations (fillings) defective.
• People who are allergic to peroxide.
• People suffering from gingivitis, periodontitis, or advanced caries.
• The restorations (fillings), crowns or veneers do not whiten peroxide. We must consider again these restorations after bleaching if the result leaves whiteness of inequality.

Whitening at home (ambulatory) supervised by a dentist

• This system uses tailored to teeth aligners, which are filled with a whitening gel containing peroxide.
• These gutters are made after the teeth fingerprinting to allow a maximum tooth contact and reduce contact with the gums.
• They must be worn for a few hours each day, or overnight, for a period of a week or more depending on the desired level of whitening.

Advantages :

• Cost
• Does not cause tooth sensitivity.

• The duration of treatment is important (at least a week).
• The result is only seen after a week.
• Risk of burns gum because it is the patient himself who handles the product at home.
• This treatment is not permanent and requires alterations after six or twelve months, depending on the degree of ingestion of foods that stain teeth.
• This whitening technique is not effective in some cases where the patient has fluorosis or a very dark staining of teeth

Chairside whitening at the dentist