What is it?
Teeth whitening lightens the colour pigments within the tooth using gels containing peroxide. It can lighten the natural colour of the tooth by a few shades; the shade that can be reached varies from person to person.
Whitening can be done in two ways:
- In-clinic whitening. After the gums are protected, the gel is applied to the teeth and renewed at set intervals.
- At-home whitening. The gel provided by the dentist is placed in custom-made clear trays and worn for the recommended time.
High-concentration whitening products are used only by a dentist or under a dentist's supervision.
Who may it suit?
- People whose teeth have darkened with age, diet or smoking
- Adults with healthy teeth and gums
Whitening does not change the colour of restorations such as fillings, crowns, bridges and veneers. Discolouration caused by certain medicines or arising during tooth development may respond only partly to whitening. If there is untreated decay or gum disease, this is treated first. Whitening is not recommended during pregnancy and breastfeeding.
How does the process work?
- Examination. The health of the teeth and gums, existing restorations and the cause of the discolouration are assessed.
- Scaling. Done before whitening if needed.
- Recording the starting shade. The shade is recorded so that the result can be compared.
- Application. The gel is applied in the clinic, or trays are made for home use and their use is explained.
- Review. The result and any sensitivity are assessed.
Frequently asked questions
Will my teeth be sensitive after whitening?
Temporary sensitivity may occur during and after whitening. It usually decreases once treatment ends. If needed, your dentist may recommend desensitising products.
Does whitening damage the teeth?
Whitening carried out under a dentist's supervision and within the recommended times is considered not to cause permanent damage to enamel. Frequent and prolonged use without supervision is not recommended.
How long does the result last?
Teeth can darken again over time. How long this takes varies with habits such as tea, coffee and smoking, and with oral care.
What should I watch out for after whitening?
In the first days it is advisable to avoid staining substances such as tea, coffee, cola, red wine and smoking.
Whether it is suitable for you is determined by an examination.