South Kensington
- 20 Old Brompton Road, London SW7 3DL
- Open seven days a week
- 020 7183 2362
Treatment comparison · Wimpole Street, Marylebone
Whitening or a scale and polish: cleaning stains off versus lightening the tooth
Teeth that look dull are not always dark. Sometimes a film of tea, coffee, red wine or tobacco staining has settled on the surface, and a hygienist can lift it in half an hour to reveal the natural colour underneath. Sometimes the enamel itself has yellowed with age, and no amount of cleaning will change that; only whitening gel, which works within the tooth, can. The two treatments are therefore not alternatives so much as answers to different questions, and the first step is working out which kind of discolouration you have.
Decision guide
Which is right for you?
Choose Teeth whitening if…
- Your teeth are clean and healthy but the shade itself is yellow or dull.
- A recent hygiene visit brightened them a little but not enough.
- You want a change that is visible to other people, not just a fresher feel.
- You are happy to wear trays at home for two to four weeks.
Choose Scale and polish if…
- You drink tea, coffee or red wine, or smoke, and can see brown staining between or on the teeth.
- It has been more than six months since your last professional clean.
- Your gums bleed when you brush or you notice tartar behind the lower front teeth.
- You are planning whitening and want a clean starting surface for the gel.
At a glance
Side by side
| Feature | Teeth whitening | Scale and polish |
|---|---|---|
| What it does | Chemically lightens the enamel and dentine | Removes plaque, tartar and surface stain |
| Type of discolouration | Intrinsic: colour within the tooth | Extrinsic: deposits on the tooth surface |
| Effect on shade | Several shades lighter than your natural colour | Back to your natural colour, no lighter |
| Where it happens | At home in custom trays after a short fitting visit | In the chair with the hygienist |
| Time | Two to four weeks of daily wear | A single 30 to 60 minute appointment |
| Fee at Wimpole Street | £399 | £89, or £142 with Airflow stain removal |
| How long it lasts | Around 6 to 12 months before a top-up | Repeated every three to six months as maintenance |
| Health benefit | Cosmetic only | Reduces gum inflammation, decay risk and bad breath |
| Best suited to | Clean, healthy teeth that are too dark | Everyone, as routine care; especially heavy tea, coffee or tobacco users |
In the chair
What the treatment involves
Teeth whitening
Whitening begins with a check that the gums are healthy and there is no untreated decay, since gel on an open cavity is painful. Impressions or a scan are taken and thin, close-fitting trays are made. At a short fitting visit you are shown how much Boutique gel to place in each tray and how long to wear it, usually overnight or for a set period during the day. Over two to four weeks the peroxide penetrates the enamel and breaks down the pigment molecules responsible for the yellow tone, so the whole tooth lightens rather than just the surface. Sensitivity, if it appears, is managed by shortening wear or skipping a night. A review records the new shade, and the trays are kept for top-ups later.
Scale and polish
The hygienist starts by examining the gums and noting any areas of bleeding or deeper pockets. An ultrasonic scaler, which vibrates at high frequency and sprays water, loosens tartar from around and just beneath the gum line, and fine hand instruments finish the areas it cannot reach. Surface stain is then removed either with a rotating rubber cup and polishing paste or, where staining is heavy, with Airflow, a jet of fine powder, air and water that strips discolouration from the pits, grooves and spaces between teeth. The visit ends with advice on brushing, interdental cleaning and anything specific to your mouth. Teeth typically look noticeably brighter immediately, because the stain that was dulling them has gone.
Fees
Cost and longevity at Wimpole Street
A hygiene appointment at Wimpole Street will be £89, or £142 when Airflow stain removal is included. Boutique home whitening will be £399, covering the custom trays, the gel and the reviews.
The two are budgeted differently. Hygiene visits recur every three to six months as part of looking after the gums, so they are an ongoing cost whatever else you do. Whitening is a one-off outlay refreshed every 6 to 12 months with inexpensive top-up gel in the trays you already own. Most people who want a lighter smile have both, in that order: the clean removes deposits that would otherwise block the gel and shows how much of the dullness was surface stain, and the whitening then works on what remains.
All prices are indicative and are confirmed in a written treatment plan at your consultation. Fees are the same at every Medical & Dental clinic.
Weighing it up
Strengths and trade-offs
Teeth whitening
Strengths
- Actually lightens the colour of the teeth
- Reaches discolouration within the enamel
- Gradual, natural-looking result
- Done at home at your convenience
- Reusable trays make top-ups cheap
Trade-offs
- Does not remove plaque or tartar
- No benefit to gum health
- Fades over 6 to 12 months
- Possible temporary sensitivity
- Crowns, veneers and fillings stay the same colour
Scale and polish
Strengths
- Lifts surface stain in one short visit
- Essential for healthy gums and fresh breath
- Low fee
- Suitable for everyone, including those with restorations
- Ideal preparation for whitening
Trade-offs
- Cannot change the natural shade
- Needs repeating every few months
- Limited effect on age-related yellowing
- Gums may feel tender briefly if there was heavy build-up
- Modest cosmetic change on its own
FAQ
Common questions
Surface stain tends to be brown or grey, patchy, and concentrated between the teeth, along the gum line and in grooves. Intrinsic yellowing is uniform across the smooth front surfaces. If a hygiene visit leaves the teeth looking noticeably cleaner but still yellow, the remaining colour is within the tooth and only whitening will change it.
No. Ultrasonic scalers and polishing pastes are designed to remove deposits without wearing enamel, and Airflow powder is far softer than tooth. Any sensitivity afterwards comes from exposed root surfaces that had been covered by tartar, and it settles within days.
Within a week or two is ideal, while the surfaces are clean and free of stain. Some people prefer to wait a few days if the gums are tender after a thorough clean, so that the trays sit comfortably.
It returns them to their natural colour by removing stain, which can be a striking change for smokers or heavy tea and coffee drinkers, but it does not alter the shade of the enamel itself. If your natural colour is lighter than you thought, Airflow may be all you need; if not, whitening follows.
No. Whitening gel has no effect on tartar, plaque or gum inflammation, and whitening over untreated gum disease can make the gums sore. Hygiene visits remain the foundation, with whitening as an optional cosmetic addition.
Yes. Hygiene appointments, Airflow and Boutique whitening are all available now at South Kensington and St Paul’s at the same fees. Your maintenance schedule can transfer to Wimpole Street once the Marylebone diary opens.
Marylebone, W1
Wimpole Street opens 1 October 2026
Register your interest and we will contact you when the Marylebone diary opens. If you would rather not wait, the same clinicians can see you at South Kensington or St Paul's now.
Related treatments at Wimpole Street
Opening 1 October 2026
Wimpole Street is not yet seeing patients. Until then, please book or call our South Kensington clinic on 020 7183 2362 or our St Paul's clinic on 020 7183 3709. Questions about the new clinic: wimpolestreet@md.co.uk.
Until we open
Need an appointment before 1 October 2026?
The same clinical team already works from two other Medical & Dental clinics. Book at either one now and, if you prefer, move your ongoing care to Wimpole Street once the doors open.
St Paul's, City of London
- 5 Ave Maria Lane, London EC4M 7AQ
- Open Monday to Friday
- 020 7183 3709
