Most patients achieve 4 to 8 shades whiter with professional whitening. Results vary depending on the type and severity of staining, your natural tooth color, and the whitening method used. Intrinsic stains (from tetracycline antibiotics or fluorosis) respond less well to whitening — in those cases, veneers may be a better option.

Professional teeth whitening results typically last 1 to 3 years, depending on your diet and habits. Coffee, tea, red wine, and tobacco accelerate re-staining. Touch-up treatments every 6 to 12 months can help maintain your results. Take-home trays make touch-ups easy and affordable.

Some patients experience temporary tooth sensitivity during or after whitening — this is normal and usually resolves within 24 to 48 hours. We use desensitizing agents to minimize discomfort, and we can adjust the concentration of the whitening gel for patients with sensitive teeth.

No. Whitening agents only work on natural tooth enamel — they do not change the color of crowns, veneers, or composite bonding. If you have visible restorations, Dr. Merchi will discuss this during your consultation so you can plan accordingly.

In-office whitening uses a higher-concentration gel activated under a light for dramatic results in about an hour. Take-home whitening uses custom-fitted trays with professional-strength gel worn for 30 to 60 minutes per day over 1 to 2 weeks. In-office is faster; take-home is more gradual and convenient for touch-ups.

Yes, significantly. Professional whitening uses higher-concentration bleaching agents that penetrate deeper stains and produce more even, dramatic results. Over-the-counter strips use lower concentrations, often produce uneven results, and can cause more sensitivity without the supervision of a dentist.

Avoid or limit staining foods and drinks (coffee, tea, red wine, dark berries) for 48 hours after whitening. Use a whitening toothpaste for maintenance. Schedule touch-up treatments every 6 to 12 months using your custom take-home trays. Regular professional cleanings also help maintain brightness.