← All explanationsIn-office bleaching

What does whitening at the dental practice involve?

In-office bleaching applies a whitening agent to natural teeth during a dental appointment. Teeth, gums and the reason for discolouration are assessed first, and the gums are protected. The degree and evenness of colour change vary. Fillings, crowns and veneers do not lighten in the same way as natural teeth.

For training & practice ↓
SMILE meets DESIGN
Teaching model of natural anterior teeth with a green gum barrier and symbolic gel; not a whitening result.AI-generated
Simplified teaching illustration · not a patient case or treatment outcome
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Start with the cause

Deposits, the tooth’s own colour and existing restorations are different issues. Examination establishes whether bleaching suits the cause and condition of the teeth.

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Gel acts on natural teeth

Peroxide-containing gel changes coloured compounds in the tooth. Soft tissues are protected. Light activation is not part of every method or a universal quality guarantee.

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Allow for sensitivity

Temporary sensitivity and irritation can occur. Tell the dental team about symptoms; the result and further steps need individual review.

At a glance

Who may be suitable?

People with suitable natural teeth after assessment of the discoloration and oral health.

What are the stages?

Assessment, shade planning, tissue protection, application and review.

What limitation matters?

Neither a fixed final shade nor risk-free whitening can be promised.

Knowledge in motion

Explained in 36 seconds.

Three steps. No audio.
Each scene can also be selected manually.

In-office bleaching: short film

Silent educational film with German on-screen text and simplified teaching images. Not a patient case or a promised treatment outcome. The full English explanation is available below.

Read the film text in English
  1. Start with the cause

    Deposits, the tooth’s own colour and existing restorations are different issues. Examination establishes whether bleaching suits the cause and condition of the teeth.

  2. Gel acts on natural teeth

    Peroxide-containing gel changes coloured compounds in the tooth. Soft tissues are protected. Light activation is not part of every method or a universal quality guarantee.

  3. Allow for sensitivity

    Temporary sensitivity and irritation can occur. Tell the dental team about symptoms; the result and further steps need individual review.

Often confused

Cleaning or bleaching?

Cleaning removes deposits. Bleaching aims to change the colour of natural tooth tissue; they have different purposes.

Quick answers
Will crowns and fillings get lighter?

Bleaching does not change the material colour of crowns, veneers and fillings as it does natural teeth. Possible colour differences should be discussed beforehand.

Is one appointment always enough?

No. Starting colour, the cause of staining, tolerance and the desired change affect planning. A particular shade or appointment count cannot be promised universally.

Is it the same as professional cleaning?

No. Cleaning mainly removes deposits and surface build-up. Bleaching uses a whitening agent to change the colour of natural teeth.

At the practice

For a personal conversation

An editorially suggested question for a conversation with Dr. med. dent. Niusha Barahmand Pour:

Which teeth could lighten, and might existing fillings or crowns stand out afterwards?

Before whitening, consider tooth colour and existing restorations together.

Discuss tooth whiteningAppointment selection at Doctolib
Meet Dr. Niusha Barahmand Pour ↗
Learning layer for training & practiceUnderstand terminology and deepen knowledge
Peroxide
A group of substances used in whitening gels to alter coloured compounds chemically.
Restoration
An artificial repair such as a filling, crown or veneer.
Sensitivity
Here: temporarily increased sensitivity, for example to cold.

Make the distinction

Cleaning removes deposits. Bleaching aims to change the colour of natural tooth tissue; they have different purposes.

Knowledge questionWhich does not whiten like a natural tooth?

For learning, not for assessing personal symptoms. Your answer is not stored or sent.

  1. An existing ceramic crown
  2. Natural tooth tissue
  3. A natural incisor
View answer

An existing ceramic crown

Artificial restorations retain their material colour, which may create a mismatch.

Sources and context

Editorial research: . General information, not an individual diagnosis or treatment recommendation. Teaching illustrations are simplified and do not depict a patient case.