Which surfaces receive additional cleaning?
The aim is to clean facing tooth surfaces and the spaces between them. A normal toothbrush cannot reach all these areas effectively.
← All explanationsInterdental cleaning
How can the spaces between teeth be cleaned?
Interdental cleaning means additionally cleaning the areas between neighbouring teeth. A normal toothbrush cannot reach every surface there effectively. Depending on the space and situation, dental floss or interdental brushes may be suitable.
For dental trainees & teams
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There are spaces between teeth
A toothbrush does not reach every tooth surface equally well. Plaque can remain between the teeth. These areas need suitable additional cleaning.
The aid must fit the space
Dental floss may suit tight contact areas. Appropriately sized interdental brushes are often used where there is enough space. One size does not fit every gap.
Ask for a demonstration of fit and technique
The practice can explain the right size and technique. Recurring bleeding should be examined; it is not a reason to stop cleaning between teeth permanently.
At a glance
Which aid fits which area?
Floss may suit tight contacts, while an interdental brush may be suitable where there is enough room. Different areas may need different sizes or aids.
How can use become safer?
The practice can demonstrate the right size and technique. Recurring bleeding calls for checks of the gums and technique, rather than permanently avoiding these spaces.
Knowledge in motion
Explained in 36 seconds.
Three steps. Straight to the point.
Explanations are also shown on screen.
Silent film in German · English explanations in the three views above
Often confused
Floss or interdental brush?
Both clean between teeth, but are not equally suitable for every situation. What matters is access to surfaces, an appropriate size and safe use.
Quick answers
Is floss always better than an interdental brush?
No. The choice depends on factors such as the space between the teeth and the gums. Several aids or sizes may be useful.
Does an interdental brush replace toothbrushing?
No. It complements a toothbrush and is intended for different surfaces.
What if the gums bleed during cleaning?
Bleeding can indicate inflammation or an unsuitable technique. If it recurs, the gums, cleaning aids and technique should be checked.
At the practice
For your consultation
A question to discuss with Dr. med. dent. Niusha Barahmand Pour:
Which aid suits each space between my teeth, and can we look at how to use it together?
A personal consultation provides space for questions about daily dental care and your own situation.
Suitable aids for the spaces between your teeth can be demonstrated and discussed personally.
Discuss interdental careChoose an appointment on DoctolibLearning for dental trainees & teamsUnderstand clinical terms and build your knowledge
Build on the simple explanation with clinical terms, key distinctions and a knowledge question.
- Interdental space
- The area between neighbouring teeth.
- Proximal surface
- The tooth surface facing a neighbouring tooth.
- Interdental brush
- A small brush for cleaning sufficiently wide spaces between teeth; its size and method of use must be suitable.
Know the difference
Floss and interdental brushes complement a toothbrush. The choice depends on the surfaces that can be reached and the individual situation.
Sources and context
Editorial research: 22 October 2026. This explanation covers general principles and does not replace a personal examination. Suitable treatment is discussed following individual assessment.