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Professional Teeth Whitening: Your Questions Answered

10/01/2025

A bright and white smile is often seen as being healthy and attractive. However, as we go through our lives, our teeth pick up stains and become discoloured. A faded smile can diminish confidence and make you self-conscious in personal and professional situations. 

Teeth whitening is a simple way to regain the brightness of your smile. This effective treatment is perfect if you need a confidence boost ahead of a big date like a job interview or a wedding or if you just want to give yourself a makeover. 

There are several ways to whiten your teeth, which can prompt you to ask several questions. So, how do you know which teeth whitening treatments are best for you?

In this guide, we’ll share the answers to some of the most commonly asked questions about teeth whitening. 

What Causes Stains and Discolouration?

Stains and discolouration on teeth can have several causes. The most common causes are lifestyle choices like drinking coffee, tea, or red wine and eating berries, soy sauce, and curries. Smoking also contributes significantly to staining. Poor oral hygiene can allow plaque and tartar to build up, causing teeth to look dull. 

Certain medications, especially antibiotics, can cause internal discolouration. Age is another factor. As we age, the enamel on our teeth naturally thins, allowing the yellowish dentin beneath to show through. Genetics can play a role, too. Your teeth may be naturally whiter or more prone to staining.

How Does Teeth Whitening Work?

Teeth whitening uses specially formulated solutions to break down the stains on your teeth. These solutions are placed into custom-made whitening trays which comfortably fit around your teeth. 

The active ingredients in professional treatments like Enlighten Evo 4 and Philips Zoom! are carbamide peroxide or hydrogen peroxide. 

These ingredients penetrate the enamel and work on surface and deeper stains, breaking them down and making the teeth appear whiter.

How Effective Is Professional Teeth Whitening?

Professional teeth whitening is much more effective than over-the-counter options. Treatments like Enlighten Evo 4 and Philips Zoom! are designed to deliver noticeable, long-lasting results by targeting both surface and deeper stains. 

There are legal limits on the peroxide level a whitening product may contain. Restrictions mean that professional treatments may contain a much higher percentage compared to over-the-counter products. 

With the proper application and aftercare, you can expect to see your teeth whiten by several shades. DIY kits can sometimes lead to uneven results or damage to the enamel, while professional whitening provides a more controlled and reliable outcome.

How Long Will It Take to Whiten My Teeth?

Your treatment duration will depend on your chosen treatment and the degree of staining. You can typically expect your treatment to take between two to three weeks. During this time, you will need to wear a custom whitening tray every night. 

Is Professional Teeth Whitening Safe?

Yes, professional teeth whitening is safe when performed under our supervision. Enlighten and Philips Zoom! have been extensively tested and approved for use by dentists. 

Before your treatment, we’ll assess the condition of your teeth and repair any cavities which may impact your treatment. We’ll provide full instructions on how to use your treatment and provide support if needed throughout the process. 

How Long Will the Effects of Teeth Whitening Last?

The results of professional teeth whitening can last anywhere from six months to two years, depending on your diet, lifestyle, and how well you care for your teeth. Regular brushing, flossing, and maintaining a good oral hygiene routine can help prolong the effects. Avoiding stain-causing foods and drinks, as well as quitting smoking, will also help keep your teeth white for longer.

Can I Get a Top-Up Treatment?

Yes, top-up treatments are available. After the initial whitening session, you can get a professional top-up if your teeth lose their whiteness over time.

Can I Get a Shop-Bought DIY Whitening Treatment?

While shop-bought DIY whitening treatments are widely available, they are less effective than professional options. Over-the-counter products, like whitening strips or gels, often contain lower concentrations of whitening agents and don’t offer the same results. They can also be more prone to causing irritation or uneven whitening, especially if not applied properly.

Teeth Whitening In Canary Wharf

Professional teeth whitening is a safe, simple, and effective way to improve the appearance of your smile. With Enlighten and Philips Zoom!, you can enjoy a bright, healthy-looking smile again in no time. 

Contact us today to schedule your teeth whitening consultation.