Teeth Whitening

What it involves

Teeth whitening lightens the colour of teeth using a bleaching agent applied by a dentist in the clinic or in trays you use at home under the dentist's guidance. It does not change the shape of teeth and does not work on crowns, fillings or veneers, which do not change colour.

Who it is for

It is for people with healthy teeth and gums who are unhappy with the shade of their teeth. A dentist will check for decay and gum problems first, because whitening should not be done over untreated disease. The results vary from person to person.

How long it usually takes

An in-clinic session may take about an hour or so, while take-home kits are used over several days or weeks. The practice can explain the plan.

What to expect

You will have a check-up, a record of your starting shade and a protective barrier on the gums. Sensitivity of teeth or irritated gums can occur during or after treatment. The final shade varies and may fade over time.

Aftercare

Teeth can be sensitive for a short time. Your dentist may suggest avoiding strongly coloured food and drink for a period and using a sensitivity toothpaste. Keep up regular brushing and dental check-ups. Contact the dentist if gums are sore or sensitivity does not settle.

When to seek it

Consider whitening if a dentist confirms your teeth and gums are healthy and you want a lighter shade. Be cautious of kiosks or kits not supervised by a registered dental professional.

What affects the cost

Cost depends on the method, the number of sessions, the products used and whether a check-up or follow-up is included. HealthNaro shows a price only where a clinic has supplied a figure with a source and date.

This page is general information and not medical advice. In an emergency, contact your local emergency number.

Sources: NHS; American Dental Association (MouthHealthy).