Teeth whitening: what to expect, and how to keep your smile bright

A brighter smile is one of the most common things people ask about. Professional teeth whitening can lighten everyday staining safely — but a little planning makes the difference between a natural result and a disappointing one.

What makes teeth darker

• Surface stains from tea, coffee, turmeric, colas, tobacco and paan
• Natural ageing, as enamel thins and the darker layer beneath shows through
• Tartar build-up along the gumline
• Less often, internal discolouration after an injury, a root canal treatment or certain medicines

Start with a check-up and clean

Whitening should only be done on healthy teeth and gums. A check-up finds any decay or gum problems that need treating first, and a professional clean removes tartar and surface stains — which on its own often brightens a smile noticeably.

How professional whitening works

Your starting shade is recorded, your gums are protected, and a whitening gel is applied under a dentist’s supervision. The gel lightens the stains within the tooth, so the change looks natural rather than painted on. Your dentist will advise on the approach and the number of sessions that suit your teeth.

Why DIY whitening can be risky

Lemon juice, baking soda, charcoal powders and unregulated kits can scratch or dissolve enamel, irritate gums and make teeth more sensitive — and enamel does not grow back. If you would like whiter teeth, a dentist can tell you what is safe and realistic for you.

Making your result last

• Avoid strongly coloured foods and drinks for the first 48 hours
• Rinse with water after tea, coffee and turmeric dishes
• Brush twice a day with fluoride toothpaste and clean between your teeth
• Keep up regular professional cleanings

This article is general information and isn’t a substitute for advice from a dentist who has examined you. Treatment suitability is determined after an in-person dental consultation.