Teeth bleaching (tooth whitening) is a cosmetic process that lightens the color of teeth by removing stains and discoloration. Here’s a clear, practical overview 👇
What is teeth bleaching?
It uses peroxide-based agents (hydrogen peroxide or carbamide peroxide) to break down stains in the enamel and dentin, making teeth appear whiter.
Common methods
1. Professional (in-office) bleaching
Done by a dentist
Stronger bleaching agents
Results in 1 session (30–90 minutes)
Fast and most effective
More expensive
2. At-home dentist-supervised kits
Custom trays + bleaching gel
Used daily for 1–2 weeks
Slower than in-office but good results
Safer than over-the-counter options
3. Over-the-counter products
Whitening strips, gels, pens, toothpaste
Lower peroxide concentration
Less dramatic results
Cheapest option
What bleaching can & can’t fix
✅ Works well on:
Yellowing from aging
Food/drink stains (coffee, tea, wine)
Smoking stains
❌ Does NOT whiten:
Fillings, crowns, veneers
Gray discoloration from trauma
Some medication-related stains (e.g., tetracycline)
Side effects (usually temporary)
Tooth sensitivity
Gum irritation
Uneven whitening if restorations are present
