Teeth whitening is a cosmetic dental procedure that uses safe bleaching agents (usually hydrogen peroxide or carbamide peroxide) to lighten the color of your teeth by removing surface stains and discoloration.

Common causes of stained or discolored teeth include:

• Foods and drinks like coffee, tea, red wine, and soda
• Smoking or tobacco use
• Aging, which thins enamel
• Certain medications, especially antibiotics like tetracycline
• Poor oral hygiene
• Excessive fluoride (fluorosis)

1. In-office whitening: Done by a dentist for immediate, dramatic results
2. Take-home trays: Custom-fitted trays with professional-grade gel
3. Over-the-counter products: Strips, toothpaste, or pens — less effective but widely available

Yes. Professional whitening is safer, faster, and more effective than drugstore products. Dentists use higher-strength gels and provide customized care to reduce sensitivity and ensure even results.

Absolutely. When supervised by a dental professional, teeth whitening is safe and well-tolerated. Mild, temporary sensitivity is the most common side effect and usually resolves within a few days.

• In-office treatments usually take 60–90 minutes
• Take-home kits are worn for 30 minutes to a few hours daily, for 1–2 weeks
• Over-the-counter options may take 2–4 weeks or longer to see noticeable results

Results vary depending on the original tooth color and the type of discoloration. Most people see their teeth whitened by 3–8 shades after professional treatment.

No. Whitening agents only affect natural tooth enamel. Dental restorations like crowns, veneers, and composite fillings will not change color, which may result in uneven shades if visible.

Some patients experience temporary tooth or gum sensitivity. Dentists can minimize this by using desensitizing agents, adjusting treatment time, or recommending special toothpaste before and after treatment.

Whitening results typically last 6 months to 2 years, depending on:

• Diet and lifestyle (coffee, wine, smoking)
• Oral hygiene habits
• Use of touch-up trays or products

• Brush twice daily and floss
• Limit staining foods and beverages
• Rinse or brush after consuming dark-colored drinks
• Use a whitening toothpaste occasionally
• Schedule touch-up whitening sessions as needed

Not always. Whitening is not recommended for:

• Children under 16
• Pregnant or breastfeeding individuals
• People with untreated cavities, gum disease, or tooth sensitivity

A dental exam is necessary to determine if you're a good candidate.