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When your teeth have white spots on them prior to whitening, there is usually one of two things that happen once you commence whitening – The white spots will disappear as the surrounding tooth whitens, and they become less noticeable, or, the teeth get whiter, but so too do the white spots, making them more conspicuous than they were previously.

It is not uncommon for the white spots to whiten more quickly than the surrounding tooth structure. This can cause some distress to people, but this is short lived, and the usual treatment is to continue whitening until the rest of the teeth are at the desired shade.

If the white spots are still visible after teeth whitening is completed, then there are treatments available, such as micro-abrasion, ICON or composite bonding to remove the white spots or mask them. This can be discussed with your dentist.

Teeth whitening is more effective on teeth that are on the yellow and white spectrum. Teeth that are shades of brown and grey are more difficult to whiten and may require a longer treatment, or stronger whitening agents.

If you have local discolouration that does not respond very well to whitening, then your dentist may discuss whitening in conjunction with more in-depth procedures, such as micro-abrasion, ICON resin infiltration treatment, composite bonding, crowns or veneers.

With all types of teeth whitening products, the results will vary from person to person, and depend largely on the original colour of the teeth, the condition of the teeth, the type of staining present and compliance with the teeth whitening regime.

The most difficult staining to remove is deep, intrinsic staining from factors such as tetracycline use. This type of staining can take many months of whitening to achieve a good result.

Teeth whitening is more effective on teeth that are on the yellow and white spectrum. Teeth that are shades of brown and grey are more difficult to whiten and may require a longer treatment, or stronger whitening agents.

If you have local discoloration that does not respond very well to whitening, then your dentist may discuss whitening in conjunction with more in-depth procedures, such as micro-abrasion, ICON resin infiltration treatment, composite bonding, crowns or veneers.

With all types of teeth whitening products, the results will vary from person to person, and depend largely on the original colour of the teeth, the condition of the teeth, the type of staining present and compliance with the teeth whitening regime.

The most difficult staining to remove is deep, intrinsic staining from factors such as tetracycline use. This type of staining can take many months of whitening to achieve a good result.

Boutique Whitening is a take-home teeth whitening treatment planned and supervised by a dentist. At AMC Dental, we first assess your teeth and gums to check that whitening is suitable. If treatment is appropriate, impressions or digital scans are used to make custom trays that fit closely around your teeth. The trays hold the prescribed whitening gel against the tooth surfaces while helping to limit contact with the gums.

How do the trays and gel work?

The whitening gel releases active ingredients that pass through the enamel and help break down coloured compounds within the tooth. Because the trays are made for your mouth, they distribute the gel more evenly than generic trays. Your dentist explains how much gel to use, how long to wear the trays and what to do if your teeth feel sensitive. See our main guide to Boutique Teeth Whitening in London for the complete treatment overview.

Boutique Day, Night and Hybrid Pro

Boutique Day uses hydrogen peroxide gel and is designed for shorter daytime sessions. It may suit people who prefer to complete whitening while awake and remove their trays afterwards.

Boutique by Night uses carbamide peroxide and is worn for longer periods, often overnight when prescribed. It can fit naturally into an evening routine.

Boutique Hybrid Pro combines hydrogen peroxide and carbamide peroxide in one formula. Your dentist will advise whether this option is appropriate rather than choosing it solely because it sounds stronger or faster.

Which option is suitable?

The right plan depends on your starting shade, daily routine, previous sensitivity and oral health. Existing fillings, crowns and veneers do not whiten in the same way as natural teeth, so they also need to be considered before treatment. Temporary sensitivity can occur. Your dentist may recommend shorter sessions, rest days or another gel protocol instead of continuing through discomfort. The official Boutique Whitening patient FAQs provide further general information, but your individual instructions from AMC Dental should take priority.

Boutique Whitening at AMC Dental Soho

AMC Dental provides dentist-supervised Boutique Teeth Whitening from its Soho clinic at 64 Frith Street, London W1D 3JP. You can also read about our wider teeth whitening treatments. If you would like us to assess suitability, discuss sensitivity or compare the Day, Night and Hybrid Pro options, you can book an appointment. This FAQ supports the main London treatment page and does not replace a clinical assessment.

• Teeth which seem at an acceptable shade, which is subjective for clinician and patient to decide.
• Presence of composite restorations mixed with natural tooth structure, which will not lighten with treatment. They may need replacing post whitening. If the restorative needs of the patient are too high, whitening may not be a good idea.
• Porcelain restorations such as crowns and veneers will not lighten, and may require replacement after whitening treatment. Patients need to be made aware of the process and costs for doing this prior to teeth whitening, to ensure they consent to this.
• Pregnant or lactating women.
• Patients who are unable to be compliant.
• Patients with unrealistic expectations.
• Patients with exposed cementum and exposed root surfaces, as cementum does not lighten with teeth whitening agents.