What is Teeth Whitening?
Professional teeth whitening uses a controlled whitening gel, applied under dental supervision, to lighten stains and discolouration on the enamel. It is safer and more predictable than over-the-counter kits.
Why is it needed?
Teeth naturally darken or stain over time. Whitening can refresh your smile ahead of an event or simply restore a brighter shade.
Symptoms & signs
- Yellow or dull-looking teeth
- Surface stains from tea, coffee, or paan/tobacco
- Discolouration from ageing
Common causes
- Staining foods and drinks (tea, coffee, cola)
- Tobacco and paan use
- Ageing and enamel thinning
- Certain medications (intrinsic staining)
The procedure, step by step
- Assessment. The dentist checks your teeth and gums are healthy and identifies the cause of discolouration.
- Cleaning. A professional clean removes surface deposits so whitening is even.
- Whitening. A protective barrier is applied to the gums and the whitening gel is activated, either in-clinic or via custom take-home trays.
- Aftercare guidance. You receive advice to maintain results and manage any temporary sensitivity.
Number of visits
In-clinic whitening is often completed in a single visit; take-home options run over 1–2 weeks.
Recovery time
No downtime. Temporary sensitivity to cold is common and usually settles within a day or two.
Benefits
- A noticeably brighter smile
- Performed safely under dental supervision
- Quick and non-invasive
Possible risks
- Temporary tooth sensitivity
- Mild, short-lived gum irritation
- Whitening does not change the colour of crowns, fillings, or veneers
- Results vary and are not permanent
Alternatives
- Dental veneers (for deeper discolouration or shape changes)
- Professional cleaning alone (for surface stains)
Aftercare
- Avoid strongly staining foods and drinks for a few days
- Reduce tobacco and paan use to maintain results
- Use a sensitivity toothpaste if advised
- Maintain regular cleaning and check-ups
When to visit a dentist
If your teeth look stained or dull, a dentist can identify the cause and advise whether whitening is suitable, some discolouration responds better to other treatments.
Medical note: This page provides general information only and is not a substitute for professional advice. Your dentist will evaluate whether this treatment is suitable for you after an in-person examination.
Frequently asked questions
Is professional teeth whitening safe?
When performed or supervised by a dentist on healthy teeth and gums, whitening is considered safe. Your dentist will evaluate whether this treatment is suitable for you after a clinical examination and any necessary X-rays.
How long do whitening results last?
Results typically last several months to a couple of years depending on diet and lifestyle. Touch-ups can maintain the shade.
Will whitening work on crowns or fillings?
No, whitening only affects natural enamel. If you have visible crowns, veneers, or fillings, your dentist will discuss matching options.