Professional teeth whitening at Nicholas Cosmetic Dental Center uses clinically proven peroxide-based bleaching agents at concentrations unavailable in over-the-counter products, delivering results that are faster, more even, and longer-lasting than anything available at a pharmacy. The practice offers both in-office whitening for immediate results and custom take-home tray systems for patients who prefer to whiten at their own pace. Custom trays are fabricated from precise impressions of your teeth, ensuring the bleaching gel contacts every surface evenly and minimising gum irritation. Most patients achieve a 6–10 shade improvement over the course of treatment.
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Some patients experience temporary sensitivity during or after whitening, particularly to cold temperatures — this is caused by the peroxide temporarily increasing the permeability of enamel tubules and typically resolves within 24–48 hours. Using a sensitivity toothpaste containing potassium nitrate for two weeks before treatment significantly reduces this response, and your clinician will advise on the appropriate bleaching concentration for your enamel type.
Whitening agents only affect natural tooth enamel — they do not change the shade of porcelain crowns, veneers, or composite bonding. If you have existing restorations in visible areas, your clinician will discuss this during your consultation; in some cases, whitening the natural teeth first and then replacing older restorations to match the new shade is the most effective sequencing strategy.
Professional whitening results typically last between 1 and 3 years, depending on dietary habits, oral hygiene, and whether you smoke. Regular consumption of coffee, red wine, and tea will accelerate re-staining. Periodic top-up sessions using your custom trays — usually just a few nights every 6–12 months — are the most cost-effective way to maintain your result long-term.