Can everyone have their teeth whitened, for example during pregnancy?

No. Professional teeth whitening is not automatically suitable for everyone. Good teeth whitening therefore starts not with the whitening gel or lamp, but with a proper consultation and client assessment.

Always use an intake form before every treatment. This helps you identify the most important points in advance and reduces the chance that essential information only comes up once the treatment has already started.

Always use an intake form

An intake form should be a standard part of every professional teeth whitening treatment.

Ask in advance about:

• age;
• pregnancy and breastfeeding;
• medication and any recent changes in medication;
• known sensitivity to light;
• sensitive teeth;
• pain or other dental complaints;
• allergies and previous reactions to products;
• illnesses or health problems the client currently has or has recently had;
• recovery after illness, surgery or medical treatment;
• recent dental treatment;
• orthodontic treatment or braces;
• previous teeth whitening experiences;
• the client’s expectations.

A positive answer does not automatically mean that the client cannot be treated. It gives you information to decide whether you can treat as normal, take extra precautions, postpone treatment or ask the client to seek advice from a doctor or dentist first.

An intake form never replaces your own professional assessment.

Medication can be important

Always ask which medication the client is taking.

Certain medicines may affect:

• sensitivity to light;
• sensitivity of the skin or oral tissues;
• dry mouth;
• the client’s general tolerance of treatment;
• recovery after medical treatment.

When using a whitening lamp, known photosensitivity or medication associated with increased light sensitivity is particularly important to identify beforehand.

As a cosmetic practitioner, you are not expected to determine whether a particular medicine is medically compatible with the treatment.

If you are unsure, the correct approach is:

do not guess → postpone treatment → advise the client to speak to a doctor, pharmacist or dentist

Illness and recovery also matter

Do not only ask whether someone is currently ill. Also ask whether they have recently been ill or are still recovering from an illness, operation or medical treatment.

Someone may already feel reasonably well while their body is still recovering.

A cosmetic whitening treatment is never urgent. If someone has been seriously ill, is still undergoing treatment or does not yet feel fully recovered, postponing the appointment is often the most sensible option.

You do not need to make a medical diagnosis. The aim is to gather enough information to recognise when a cosmetic treatment may not be appropriate at that moment.

Expectations are also part of the consultation

A good consultation is not only about safety.

Also ask:

What does the client expect from the treatment?

Some clients may expect their teeth to become exactly eight or ten shades lighter, or to achieve an extremely white colour.

You cannot guarantee that.

As explained in our FAQ about whitening results, the final outcome depends on factors such as:

starting shade → amount of discolouration → natural tooth colour → whitening gel → treatment protocol → individual response of the teeth

Discuss this before starting.

A client with realistic expectations is usually more satisfied than someone who has been promised a result that may not be biologically achievable.

Teeth whitening during pregnancy

We advise against teeth whitening during pregnancy.

It is a cosmetic treatment and can easily be postponed. During pregnancy, we therefore see no reason to expose a client unnecessarily to whitening products.

Our advice is simple:

pregnant → postpone treatment

After pregnancy, the client can be assessed again to determine whether treatment is suitable.

What about breastfeeding?

During breastfeeding, we also recommend postponing cosmetic teeth whitening as a precaution.

There is no generally accepted, well-supported rule stating that someone should express and discard breast milk for 12, 24 or 48 hours after whitening.

If a client still wants to have treatment while breastfeeding, we recommend that she discusses this first with her doctor, dentist or another qualified healthcare professional and clearly states which whitening product and active ingredients will be used.

Age and dental development

The development of the dentition is also important.

In young permanent teeth, the pulp chamber is relatively larger and the dentine layer is thinner. The pulp contains, among other things, the nerves and blood vessels of the tooth.

This means that the nerve tissue is relatively closer to the outer surface of the tooth in a younger dentition.

As the tooth continues to mature, more dentine is formed and the pulp chamber becomes relatively smaller.

This is one of the reasons why younger teeth may react more sensitively to stimuli from whitening products and to the temperature or heat generated by a whitening lamp.

What age limit do we use?

Age remains a guideline because every dentition develops at its own pace.

At X-treme Smile, we use 16 years as the minimum guideline age for standard cosmetic teeth whitening.

From the age of 16, cosmetic whitening may be considered provided that:

• the permanent dentition is sufficiently developed;
• the intake form reveals no contraindicating issues;
• there are no unexplained complaints;
• the client is suitable for treatment;
• the whitening product may be used for that age according to its instructions and applicable rules.

Clients under 16

We would not routinely treat a client under 16 simply because they would like whiter teeth.

There may, however, be exceptional situations.

For example, a 14- or 15-year-old may be extremely self-conscious about noticeable tooth discolouration or may be bullied because of it.

In such a situation, an individual assessment could be considered with the involvement and consent of the parent(s) or legal guardian(s).

You would look particularly carefully at:

development of the dentition → type of discolouration → sensitivity → dental issues → products used → reason for treatment

For safety reasons, never under 14

For safety reasons, we would never carry out cosmetic teeth whitening on anyone under the age of 14.

Even with parental consent.

Our practical guideline is therefore:

under 14 → no cosmetic whitening
14–15 → only in exceptional situations, with parental involvement and careful assessment
16+ → possible after full intake and assessment

Always also follow the legal age limits and instructions of the specific whitening product. Parental consent does not override those conditions.

Noticeable discolouration in a younger client

A young person with noticeably dark teeth is not automatically a suitable candidate for cosmetic whitening.

Especially if:

• one tooth is much darker than the others;
• one tooth is grey or almost black;
• the discolouration appeared suddenly;
• pain or marked sensitivity is present;
• the cause is unclear.

In these situations, the client should first be assessed by a dentist.

As a cosmetic practitioner, you do not need to determine what the cause is. You need to recognise when something falls outside the normal cosmetic situation.

Teeth whitening with braces

We do not treat clients with fixed orthodontic braces.

Brackets and other fixed components cover parts of the tooth surface. The whitening gel therefore cannot contact the enamel evenly.

After the braces are removed, this may result in an uneven colour appearance.

In short:

fixed braces → do not whiten

What about clear aligners?

With a removable clear aligner, the situation is different.

The aligner is removed before the whitening treatment.

However, you should check whether orthodontic attachments are present on the teeth. These small composite pieces cover part of the tooth surface and may affect how evenly the teeth whiten.

If there are many or large attachments, it may be better to wait until the orthodontic treatment has been completed.

So:

fixed braces → do not treat
removable clear aligner → remove it and assess attachments
many attachments or any doubt → preferably postpone treatment

Sensitive teeth

Sensitive teeth do not automatically mean that a client can never be treated.

But you want to know about this before the treatment starts, which is why it belongs on the intake form.

Sensitivity during whitening is not necessarily caused only by the gel. The heat generated by the whitening lamp can also be perceived by the nerve tissue in the tooth.

If the client already has clear, spontaneous or unexplained pain before treatment, do not simply start. Recommend a dental assessment first.

Always ask about allergies and sensitivities

The intake form should include questions about known allergies and previous reactions to cosmetic or dental products.

A client may also have an allergy or sensitivity without being aware of it beforehand.

Whitening gel should therefore be applied carefully to the tooth surface and should not unnecessarily come into contact with:

• gums;
• lips;
• oral mucosa.

These soft tissues are more sensitive to direct product contact than hard tooth tissue.

If unexpected redness, swelling, a burning sensation or another clear reaction occurs during treatment, stop and follow the instructions for the product being used.

The intake form is not just paperwork

Do not have the client quickly sign a form simply because it is part of the administration.

Use the answers.

A proper consultation means:

complete the form → discuss the answers → check any important points → discuss expectations → make your own observations → only then decide whether to treat

The form helps you avoid overlooking important issues, but the practitioner still has to decide whether the treatment should go ahead.

If you notice something you are unsure about, you do not need to make a dental or medical diagnosis.

The professional approach is:

recognise something unusual → do not diagnose it yourself → postpone treatment → advise medical or dental assessment where appropriate

Not every client needs to be treated

An important professional skill is being able to decide not to carry out a treatment.

Even if the client wants it.

Reasons to postpone or decline treatment may include:

• pregnancy;
• breastfeeding;
• a dentition that is too young or insufficiently developed;
• fixed braces;
• certain medication or uncertainty about medication;
• known photosensitivity;
• recovery after illness or medical treatment;
• unexplained dental pain;
• unusual localised discolouration;
• possible allergic or sensitivity reactions;
• doubts about the client’s overall suitability;
• completely unrealistic expectations.

Sometimes you can proceed after obtaining more information. Sometimes you postpone. And sometimes referral to a doctor or dentist is the better option.

In short

Not everyone is automatically suitable for teeth whitening.

Always use an intake form for every client before every treatment.

At a minimum, check:

age and dental development → pregnancy/breastfeeding → medication → light sensitivity → illness and recovery → dental complaints → sensitivity → allergies → orthodontics → previous treatments → expectations

Our practical age guideline is:

under 14 → never cosmetic whitening
14–15 → only in exceptional circumstances and with parental involvement
16+ → possible after a complete consultation and assessment

We do not treat clients with fixed braces. During pregnancy we postpone treatment, and during breastfeeding we also recommend waiting as a precaution.

Professional teeth whitening starts before the first drop of whitening gel is applied. A good intake form helps you identify important risks, questions and expectations before you begin.