Teeth whitening is a cosmetic dental procedure that lightens the color of your teeth and helps remove stains and discoloration. It’s one of the most popular treatments for improving the appearance of a smile.
How does it work?
There are two main types of teeth whitening:
In-office whitening
Done by a dentist using a high-concentration bleaching agent (usually hydrogen peroxide or carbamide peroxide).
Often enhanced with a special light or laser to accelerate the process.
You can see results in just one visit — teeth may become several shades whiter.
At-home whitening
Custom trays or whitening kits provided by your dentist.
Lower-concentration whitening gel used over a few days or weeks.
Results appear more gradually, but still effectively.
What causes teeth to discolor?
Coffee, tea, wine, and tobacco
Poor dental hygiene
Aging (enamel wears down, revealing yellowish dentin)
Certain medications or trauma
Is it safe?
Yes, when done under the supervision of a dental professional. Some people may experience temporary tooth sensitivity or gum irritation, but these effects usually fade shortly after treatment.