Is Whitening Worth It?
Whitening is one of the simplest cosmetic treatments in dentistry, and one of the most misunderstood. Here's what you get for your money, how long it lasts and when it isn't worth doing.
How Much Is Teeth Whitening in Edinburgh, and Is It Worth It?
In the UK, teeth whitening can only legally be provided by a dentist or a registered dental professional working to a dentist's prescription, so a dental practice is where to find it in Edinburgh. At Comely Bank Dental, near Stockbridge, professional home whitening is from £450, including custom trays and gel. For most people with healthy, naturally yellowish teeth it's worth it, though results vary and it won't change the colour of crowns, veneers or bonding.
How Much Does Teeth Whitening Cost?
Professional home whitening at our practice starts from £450. It involves a check that whitening is suitable for you, a digital scan or impressions, custom-made whitening trays and professional whitening gel. Your written treatment plan confirms exactly what's included, and the fee, before you start.
If you'd like a whiter smile, the place to find it in Edinburgh is a dental practice. Whitening that actually works is only legal when it's provided by a dentist, or by a registered dental professional working to a dentist's prescription. More on that below.
Whether it's worth it depends on your teeth. For healthy teeth that have yellowed with age, coffee or tea, whitening is usually good value, because a small investment makes a visible difference. For other kinds of discolouration, it may not help, and we'll tell you before you spend anything.
What Does Professional Home Whitening Involve?
Professional home whitening is a supervised course you carry out at home, using trays made for your teeth.
- Dental examination and assessment. We check your teeth and gums, look for decay or leaking fillings, and note the shade you're starting from.
- Scan or impressions. We take a digital scan with our iTero scanner, or impressions, to make your custom trays.
- Fitting. We fit the trays, show you how much gel to use and explain how long to wear them.
- Whitening at home. Most people wear the trays overnight or for a set time each day, usually for two to three weeks.
- Review. We check your shade and gums and talk about keeping the result.
Custom trays fit closely, so the gel stays on your teeth and away from your gums. That's a big part of why professional whitening is more even and more comfortable than one-size-fits-all products.
Is Whitening Right for Your Teeth?
Book an appointment and we'll check your teeth and gums, explain what result is realistic and give you a written plan before you start.
What Do Other Practices in Edinburgh Charge?
Among Edinburgh practices that publish their fees (October 2026), the lowest advertised price for teeth whitening ranges from about £150 to £535. The middle half of practices sit between roughly £300 and £410.
Those figures cover different things, so it pays to check what each price includes:
- whether it's home whitening with custom trays, an in-surgery treatment, or both
- how much whitening gel is included
- whether a dental examination and a review appointment are part of the fee
- whether top-up gel is available later, and on what terms
Not every practice publishes its fees, so these figures are a guide to the market rather than a complete survey.
Why Is Whitening Dentist-Only in the UK?
Under UK law, whitening products containing more than a very small amount of hydrogen peroxide can only be supplied by, or under the direct supervision of, a dentist. Effective concentrations can only be used in people aged 18 or over, except where whitening is part of treating or preventing disease.
The reason is safety. Whitening gel can irritate the gums and make teeth sensitive, and it can mask problems such as decay or a dying tooth that need treatment first. A dentist checks for those before you start.
Over-the-counter strips, pens and powders contain only very low levels of peroxide, or none, so their effect is limited. Whitening offered in salons or by beauticians is illegal in the UK, and the products used can harm your teeth and gums.
How Long Do Whitening Results Last?
Whitening results usually last from several months to a few years. How long depends on your habits and your teeth. Results vary from person to person.
Things that bring back stain sooner:
- coffee, tea, red wine and cola
- smoking or vaping
- curries, berries and other strongly coloured foods
- skipping regular hygiene visits
Teeth often look their whitest in the first few days after a course, then settle slightly. That's normal, and it's why we review your shade a little after you finish.
Regular hygiene visits remove surface stain and keep the result looking fresh. Members of our dental plan save 10% on most private treatment.
What Are Top-Ups, and Do You Need Them?
Most people want a short top-up from time to time. Because you keep your custom trays, a top-up simply means using whitening gel for a few days rather than starting again.
How often depends on you. Some people top up every six months or so, especially if they drink a lot of coffee or tea. Others go a year or more. Keep your trays clean and dry in their case, and bring them to your dental examinations so we can make sure they still fit well.
Top-up gel is supplied by the practice, so we can check your teeth and gums are still healthy before you whiten again. Trays may need remaking if you've had new fillings, crowns or orthodontic treatment that has changed the shape of your teeth.
Who Won't Benefit From Whitening?
Whitening only lightens natural tooth enamel. It's worth knowing its limits before you start.
- Crowns, veneers, bonding and white fillings don't change colour. If you have them on your front teeth, whitening can leave them looking darker than the teeth around them, and they may need replacing afterwards to match.
- Very grey or banded staining, such as the kind caused by some antibiotics taken in childhood, responds slowly and often unevenly. Composite bonding or veneers may be better options.
- A single dark tooth, often after a knock or root canal treatment, usually needs its own assessment rather than whitening of every tooth.
- Teeth with decay, gum disease or exposed roots need treatment first, and roots don't whiten.
- People who are pregnant or breastfeeding are usually advised to wait.
- Under-18s can't have whitening with effective concentrations of peroxide, except as part of treating a dental problem.
If whitening won't give you the result you want, we'll explain what will.
Does Whitening Cause Sensitivity?
Sensitivity is the most common side effect. It's usually mild and temporary, settling within a day or two of stopping. Some people also notice slight gum irritation if gel spills over the edge of the tray.
To reduce sensitivity:
- use a sensitive toothpaste for a couple of weeks before and during whitening
- use the amount of gel we show you, not more
- take a night or two off if your teeth feel tender
- tell us if it doesn't settle, because we can adjust your routine
If you already have sensitive teeth, mention it at your assessment so we can plan around it.
Planning Whitening with Other Cosmetic Work
If you're also thinking about bonding or veneers, whitening comes first. Composite and porcelain are matched to your teeth on the day, and they won't lighten afterwards. We usually wait about two weeks after whitening for the colour to settle before matching any new work.
You can read more about the treatment on our teeth whitening page, or book an assessment at our Comely Bank practice to find out what's realistic for your teeth.
Questions
This guide is general information, not a diagnosis. A dentist needs to examine you to say what is right for your teeth.