A brighter smile is one of the most sought-after cosmetic dental results, and the internet is full of whitening products, home remedies, and miracle solutions. The problem is that not all of them work, and some can actually damage your teeth.
At Cliftonville Dental in Northampton, we want to give you clear, honest information about teeth whitening so you understand what is effective, what is safe, and what is simply a waste of time and money.
Why Do Teeth Become Discoloured?
Teeth become discoloured for two main reasons. Extrinsic staining sits on the outer surface of the enamel and is caused by food and drinks such as coffee, tea, red wine, and berries, as well as tobacco. This type of staining responds well to professional whitening.
Intrinsic discolouration occurs within the tooth itself and can result from ageing, certain medications such as tetracycline antibiotics taken during childhood, trauma, or fluorosis. Intrinsic staining is more stubborn and may require alternative treatments such as veneers or composite bonding rather than whitening alone.
Does Professional Teeth Whitening Actually Work?
Yes. Professional teeth whitening carried out or supervised by a dentist uses prescription-strength bleaching agents that are not available in over-the-counter products. These are significantly more effective at achieving noticeable, lasting results. Most patients achieve several shades of improvement, with results typically lasting one to three years.
At Cliftonville Dental, we offer both home whitening kits with custom-made trays and in-practice whitening treatments. The home whitening approach involves wearing custom trays filled with whitening gel for a prescribed period each day over two to three weeks. This gradual approach tends to produce very natural-looking results with minimal sensitivity. In-practice whitening achieves faster results in a single appointment.
What About Over-the-Counter Whitening Products?
Whitening toothpastes, strips, and kits sold in supermarkets and online are subject to different regulations in the UK. Since 2012, only dental professionals can legally provide whitening products with hydrogen peroxide concentrations above 0.1%. Products available over the counter contain only very low concentrations, which is why their whitening effect is limited.
That said, whitening toothpastes can help remove surface staining and maintain results after professional treatment. They do this through abrasion rather than bleaching, so using them alongside your regular fluoride toothpaste is a reasonable approach.
Be cautious about whitening products sold by non-dental providers or purchased online. These may contain illegal concentrations of bleaching agents, incorrect formulations, or misleading claims. Using these products without dental supervision increases the risk of tooth sensitivity, gum damage, and uneven results.
What About Home Remedies Like Activated Charcoal or Oil Pulling?
Activated charcoal toothpastes have become widely marketed as a natural whitening solution. However, the evidence base for their effectiveness is very limited, and there are concerns that their abrasive nature may actually wear away enamel over time. The British Dental Association does not recommend activated charcoal products for regular use.
Oil pulling, which involves swishing oil around the mouth, has no credible clinical evidence to support whitening claims. It will not brighten your teeth.
The most reliable and safe approach to teeth whitening remains professional treatment from a qualified dental professional.
Is Teeth Whitening Safe?
Professional whitening is safe when carried out correctly. The most common side effect is temporary tooth sensitivity, which usually resolves within a day or two after each whitening session. Our team at Cliftonville Dental takes care to assess your suitability for treatment beforehand and will advise on the best approach if you have existing sensitivity issues.
Whitening is not suitable for pregnant or breastfeeding women, children under 18, or patients with certain dental conditions. A consultation with your dentist will confirm whether the treatment is appropriate for you.
If you are also considering composite bonding or veneers to improve your smile, whitening is best done first so that your new restorations can be matched to your brighter tooth colour. Read our comparison guide on veneers, bonding and whitening for more detail on how these treatments work together.
Frequently Asked Questions About Teeth Whitening
How many shades whiter can whitening make my teeth?
Most patients achieve between two and eight shades of improvement, depending on the initial shade, the type of discolouration, and the whitening system used.
Does whitening damage tooth enamel?
When used as directed under dental supervision, whitening does not damage enamel. Overuse or use of unauthorised products with excessive concentrations can cause harm, which is why professional guidance matters.
How long do whitening results last?
Results typically last one to three years. Avoiding staining foods and drinks, not smoking, and maintaining good oral hygiene will extend results. Touch-up treatments can also refresh your results over time.
Can I whiten my teeth if I have crowns or veneers?
Whitening gel does not change the colour of crowns, veneers, or composite bonding. If you have visible restorations at the front of your mouth, speak to your dentist before whitening to understand how your overall smile appearance may be affected.
Will whitening work on teeth that are grey rather than yellow?
Greyish discolouration, which can result from medication or trauma, is more resistant to standard whitening. Alternative treatments such as veneers or bonding may be more appropriate. A consultation will confirm the best approach.
Book Professional Teeth Whitening at Cliftonville Dental, Northampton
If you would like a brighter smile, professional whitening from Cliftonville Dental is the safest and most effective route. Our team will assess your teeth, recommend the best approach for your situation, and guide you through the process from start to finish. Contact us today to book your whitening consultation.
Written by Dr Anesh Patel
Dentist, B.D.S. M.F.G.D.P. (UK)
Co-owner of Cliftonville Dental, Dr Anesh Patel qualified from Kings College London in 1999 and has practised in Northampton ever since, with a special interest in cosmetic and implant dentistry.
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