Teeth Whitening
Dental
Teeth whitening lightens natural tooth colour with peroxide gel, either in-clinic in about an hour (often with a light, e.g. Zoom) or at home with custom trays over 1–2 weeks. It does not change crowns, fillings or veneers.

In-clinic vs at-home

In-clinic whitening gives the fastest result; take-home trays are gentler and cheaper. Many clinics combine both.

Side effects

Temporary sensitivity is common. Avoid coffee, red wine and curry for 48 hours after treatment.

Frequently asked questions

How long does whitening last?

Typically 6 months to 2 years, depending on diet and smoking.

At a glance

Price in Bangkok

Varies by system – in-clinic costs more than home kits

Recovery

Temporary sensitivity for 1–2 days.

Last reviewed

Nov 12 2026 00:00

Prices are indicative and change often. Always ask the clinic for a written quote.

This guide is general information, not medical advice. Talk to a licensed doctor about whether a treatment is right for you.