How Does Teeth Whitening Work?

Teeth whitening is a cosmetic dental procedure designed to lighten the colour of teeth and remove stains and discolorations. It's a popular treatment for improving the appearance of teeth that have become discoloured due to various factors such as aging, consumption of certain foods and drinks, smoking, and poor oral hygiene. There are two primary methods for teeth whitening: in-office professional treatments and at-home treatments.

1. **In-Office Professional Teeth Whitening**:

In-office teeth whitening is typically performed by a dentist or dental hygienist. The procedure involves the following steps:

- **Preparation**: The dentist will examine your teeth to determine the extent of discoloration and discuss your expectations. They may take "before" photos to track your progress.

- **Isolation**: The dentist will isolate your teeth from the surrounding tissues using barriers or a protective gel to minimize contact with the whitening agent.

- **Application of Whitening Agent**: A professional-strength whitening gel containing hydrogen peroxide or carbamide peroxide is applied to the teeth. Sometimes, a special light or laser is used to activate the whitening gel and enhance its effects.

- **Reapplication and Duration**: The whitening gel is typically applied in several sessions, with each session lasting about 15-20 minutes. The process may involve reapplying the gel and light activation.

- **Rinsing and Evaluation**: After the desired level of whitening is achieved, the dentist will rinse off the whitening gel and evaluate the results. You may see immediate improvements, but the full effects may become more noticeable over the next few days.

2. **At-Home Teeth Whitening**:

At-home teeth whitening involves using over-the-counter or dentist-prescribed whitening products. This method generally takes longer to achieve results compared to in-office treatments. The process involves the following steps:

- **Custom Trays or Strips**: Your dentist may create custom-fitted trays to hold the whitening gel against your teeth. Alternatively, you can use pre-made whitening strips that adhere to your teeth.

- **Application**: You apply the whitening gel to the trays or strips and wear them for a specified period, usually ranging from 30 minutes to several hours, depending on the product.

- **Duration**: At-home treatments are typically used daily for a few weeks to achieve the desired level of whitening.

- **Results**: The gradual whitening process means you'll see results over time, as the whitening agent breaks down stains and discolorations.

It's important to note that while teeth whitening can be effective for many people, the results are not permanent. The longevity of the results depends on factors such as your oral hygiene habits, diet, and lifestyle choices. Additionally, teeth whitening may not be suitable for individuals with certain dental conditions, such as sensitive teeth or gum disease. Before undergoing any teeth whitening procedure, it's advisable to consult with a dentist to determine the most appropriate and safe treatment option for your specific needs.