Does the tray whiten by itself?
No, it is a carrier.
A whitening tray is a fitted plastic carrier for a whitening product. During dentist-guided home whitening it holds the planned gel against tooth surfaces. The tray alone does not whiten teeth. Fit, product, amount and wearing time need to work together.
For training & practice ↓
The tray and its edge should fit the dental arch. Pressure spots or escaping gel are reasons to have its use reviewed.
Use only the product and instructions discussed for it. More gel or longer wear is not a shortcut to a safe result.
Sensitivity or gum irritation may occur. Pause and seek advice; fillings and crowns do not whiten with the teeth.
No, it is a carrier.
No.
Pause and contact the dental team.
Three steps. No audio.
Each scene can also be selected manually.

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.
The tray and its edge should fit the dental arch. Pressure spots or escaping gel are reasons to have its use reviewed.
Use only the product and instructions discussed for it. More gel or longer wear is not a shortcut to a safe result.
Sensitivity or gum irritation may occur. Pause and seek advice; fillings and crowns do not whiten with the teeth.
A whitening tray carries a product. An aligner moves teeth, while a bite splint changes contacts or protects surfaces. A similar clear appearance does not make them interchangeable.
Not without specific dental assessment. Design, material and intended use may differ.
That depends on the product and plan. A general number of hours cannot replace your instructions.
No. Starting colour, discoloration and existing restorations limit the result; a particular shade change is not promised.
Editorially suggested question to discuss with Dr Niusha Barahmand Pour:
Does this tray fit my teeth and the planned whitening product?
Before whitening, discuss tooth health, existing restorations and appropriate use.
Discuss whitening and tray fitAppointment selection at DoctolibA whitening tray carries a product. An aligner moves teeth, while a bite splint changes contacts or protects surfaces. A similar clear appearance does not make them interchangeable.
Editorial research: . General information, not an individual diagnosis or treatment recommendation. Teaching illustrations are simplified and do not depict a patient case.