Tooth whitening is a technique of lightening the color of one or more teeth to make their appearance more attractive. Therefore, it is a cosmetic procedure.
Indications of dental bleaching
Tooth whitening is indicated in the following cases:
- When the tooth darkens due to aging.
- In teeth with stains caused by food intake with many pigments (tea, coffee or smoking …).
- Dental fluorosis (excess fluoride is the origin of the spots).
- Calcification pulp or root canal treated teeth incorrectly.
- Stains caused by taking certain medications such as tetracycline.
- Imperfect Dentinogenesis (genetic alteration in the development of the teeth, which causes changes in the structure and color of the same).
Contraindications of dental bleaching
Tooth whitening is contraindicated in the following situations:
- Patients with poor periodontal status that has not been treated.
- When teeth have large restorations in visible areas.
- Root exposure.
- Severe dental hypersensitivity.
- Poor condition of teeth: caries, cracks or fissures, severe loss of enamel, and so on.
- Below 18.
- Pregnant women.
- People allergic to peroxides.
Types of Tooth Whitening
According to the vitality of the tooth can be classified in tooth whitening:
- Internal Tooth bleaching: developments in non-vital teeth that have been endodontically treated. The change in tooth color has its origins in the pulp chamber.
- External Tooth Whitening: is performed on vital teeth. Discoloration of the tooth has an extrinsic origin.