At-home tooth whitening involves applying a whitening gel containing either hydrogen peroxide or carbamide peroxide to the teeth using custom-made trays provided by your dentist. Here’s how it works:

1. Custom Trays: Your dentist takes impressions of your teeth to create trays. This ensures even gel distribution and prevents leakage onto the gums.

2. Application: You place a small amount of whitening gel into the trays and wear them as instructed, typically for a few hours each day or overnight, depending on the product.

3. Action: The active ingredient in the gel penetrates the enamel and breaks down stains within the tooth. This lightens discolouration caused by food, drinks, smoking, or natural ageing.

4. Duration: The treatment typically lasts 3-4 weeks, depending on the desired shade and the concentration of the gel.

Yes, professional tooth whitening is safe when performed by a dentist. It uses controlled bleaching agents that won’t harm your tooth enamel or gums, ensuring effective and safe results.

The results of tooth whitening can last indefinitely with proper maintenance. Patients are advised to follow good oral hygiene practices, such as regular brushing and flossing, and avoid foods or drinks that may stain the teeth, like coffee, tea, and red wine. Using the custom whitening trays provided for occasional top-up treatments every few months, as recommended by your dentist, will also help maintain the brightness of your smile over time.

Tooth whitening is highly effective for most surface stains caused by coffee, tea, and smoking. However, deeper stains from medications or tooth injuries may require alternative treatments like veneers or bonding.