Teeth bleaching (also called teeth whitening) is a cosmetic dental procedure that lightens the color of your teeth to make them appear whiter and brighter. It can help remove stains and discoloration caused by food, drink, smoking, aging, or certain medications.
Types of Teeth Bleaching
In-office bleaching
Done by a dentist.
Uses high-concentration hydrogen peroxide or carbamide peroxide.
Often activated by light or laser.
Fast results (usually in one session).
More expensive but highly effective.
At-home professional kits
Provided by a dentist.
Custom-fitted trays with lower-concentration bleaching gel.
Worn for a few hours a day or overnight for 1–2 weeks.
Slower results than in-office but still effective.
Over-the-counter products
Whitening strips, toothpaste, rinses, pens, and generic trays.
Less expensive but lower peroxide concentration.
Results vary and take longer.
Common Side Effects
Tooth sensitivity (especially to cold)
Gum irritation
Uneven whitening (especially if you have dental work like crowns or fillings)
Tips for Safe Bleaching
Consult a dentist before starting any whitening treatment.
Avoid acidic and staining foods/drinks during and after treatment (coffee, wine, citrus, etc.).
Don’t overuse – excessive bleaching can damage enamel.
Use desensitizing toothpaste if you experience sensitivity.
