Teeth whitening is a popular cosmetic dental procedure aimed at removing stains and discoloration to achieve a brighter, more radiant smile. This treatment can be performed in-office by a dentist using high-concentration bleaching agents for quick and dramatic results or at home with custom-fitted trays and lower-concentration gels for gradual whitening. Common causes of tooth discoloration include coffee, tea, red wine, smoking, and natural aging. Teeth whitening not only enhances the appearance of your smile but also boosts confidence. Maintaining results requires good oral hygiene practices and avoiding foods and drinks that cause staining.