How long does teeth whitening last?

Teeth whitening aftercare tips

One of the most common treatments within cosmetic dentistry is professional teeth whitening. Teeth can become discoloured over time, due to factors like ageing, diet and lifestyle habits such as smoking. 

Thanks to the latest in modern dentistry, there are now many ways to whiten your teeth. Here at SMIL, our clinicians will take the time to come up with a treatment plan that helps you achieve the sparkling white smile of your dreams. With at-home teeth whitening kits and in-person consultations, we can help you on your journey to a brighter smile.

We’ve put together everything you need to know about professional teeth whitening. Keep reading to find out how long professional teeth whitening lasts and the best aftercare tips to keep your pearly whites fresh for years to come…

What is professional teeth whitening and how does it work?

Professional teeth whitening is a minimally invasive procedure that is designed to lighten the colour of your teeth. This cosmetic dental treatment is carried out by our talented clinicians who are trained to safely and effectively brighten the appearance of your smile.

So, how does teeth whitening actually work? Teeth whitening involves the application of a whitening agent, such as hydrogen or carbamide peroxide, which will break down stained molecules. Our cosmetic dentists can then separate them from the tooth and leave you with a mesmerising smile.

The types of professional teeth whitening

We are proud to provide both at-home and in-chair teeth whitening, delivering a wide range of safe options for our patients. 

Teeth whitening should only be carried out by our professional clinicians to ensure that no damage is made to your health or smile. 

At-Home teeth whitening

At our practice in Chatham, our clinicians would recommend Boutique Whitening for home-based whitening. This option offers the strength and effectiveness of professional teeth whitening in the convenience of your own home. You will be provided with a custom-made set of trays designed to fit over your teeth, along with a tooth-whitening gel and an instruction guide to help you carry out whitening safely at home.

With full control over the outcome of your smile, our at-home teeth whitening means that you can brighten your teeth on your own schedule without frequent trips to our dental practice.

In-chair teeth whitening

This type of teeth whitening is completed by our experienced team within our Chatham office. Our clinicians will apply a whitening agent to your teeth and then activate it using a special light. In-chair teeth whitening provides a predictable outcome as we can assess the degree of staining and customise your treatment plan as necessary to help you achieve your desired shade.

Why might someone choose professional teeth whitening?

There are many reasons you may choose to opt for professional teeth whitening, such as:

Improving your confidence

If you find yourself shying away from the camera and avoiding smiling for photos, our teeth whitening treatments can improve your confidence.

Removing stains

Food and drinks like coffee, wine and tea, can lead to surface stains on the teeth. Professional teeth whitening can restore the natural whiteness of your smile and remove these stains.


While many over-the-counter teeth whitening solutions may seem more affordable, they can be more costly in the long run. If these products don’t deliver the desired results, you may find yourself seeking professional dental treatment to help correct your smile, which can result in higher expenses.


When teeth whitening treatments are performed by a professional dentist, it is a safe and effective way to brighten your smile. Our clinicians can advise on the best teeth whitening products for your oral health and monitor you for any potential side effects. With our advice and guidance, you can achieve a pearly white smile in the safest way possible.

How long does professional teeth whitening last?

The length that professional teeth whitening lasts can vary. On average, the results can last anywhere from six months to three years. Teeth naturally stain over time due to factors like ageing and results can be dependent upon your oral hygiene habits, diet and lifestyle.

Following our teeth whitening aftercare tips will help you maintain your white smile for as long as possible…

Teeth whitening aftercare tips

Taking care of your teeth following your whitening treatment is simple with our aftercare tips. After your procedure, it’s best to avoid food and drinks that can stain your teeth for at least 24 hours. This includes red wine, tea and coffee. 

Continue to look after your teeth by maintaining good oral hygiene at home. Brush your teeth twice a day for two minutes and make sure to floss regularly. Avoid smoking as this can cause your teeth to yellow. When drinking beverages that can stain, use a straw to help minimise contact with your teeth. 

To maintain the sparkling white results of your treatment, ensure to attend routine check-ups at our warm and welcoming practice. Our clinicians will monitor your oral health and be able to spot any issues before they become too severe to treat.

Discover more about our teeth whitening treatments by clicking here.

Choose Smil

Here at Smil, we proudly offer both at-home and in-person teeth whitening treatments to help brighten your smile. Our clinicians can help you whiten your teeth safely and effectively so that you can smile with confidence as soon as you leave our practice.

To learn more about our teeth whitening treatments and how long they last, please get in touch. Call our friendly team today on 01634 756 536. We look forward to hearing from you.

Back to Blog

get in touch

Smil Logo

Smil, Unit 69-70, Dockside Outlet Shopping Centre, Maritime Way, St Mary's Island, Chatham, ME4 3ED

Google Rating
Google Rating
Google Rating