What is insufficient?
Space for the teeth within a dental arch.
← All explanationsDental crowding
Why do teeth overlap or stand out of line?
With dental crowding, there is not enough room in the dental arch for all teeth to align normally side by side. Teeth may rotate, overlap or be displaced. Planning considers space, bite, supporting tissues and developmental stage.
For dental trainees & teams
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Tooth size meets available space
Crowding describes the relationship between available and required space. It may affect only a few teeth or larger sections of the arch.
More than straight front teeth
Examination includes both arches and how they meet. Tooth and gum health, as well as difficulty cleaning, are also considered.
Findings determine the approach
Whether and how space can be created or redistributed is planned individually. A particular aligner or brace does not automatically suit every case of crowding.
At a glance
What might it look like?
Overlapping, rotated or displaced teeth, for example.
What does planning require?
Both arches, their bite relationship and healthy supporting tissues.
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
Crowding or bite relationship?
Crowding describes a shortage of space within an arch. Bite relationship describes how the upper and lower teeth meet. Both are assessed together; crowding can also occur with an otherwise normal bite relationship.
Quick answers
Does every rotated tooth mean severe crowding?
No. A single feature does not reveal the total space requirement. Examination and models or scans support planning.
Can crowding become noticeable in adulthood?
Yes. Tooth positions can change throughout life. New movement should also prompt assessment of the supporting tissues.
Do teeth always have to be extracted?
No. Options depend on the overall findings. Extraction is not an automatic consequence of the term crowding.
At the practice
For your consultation
A question to discuss with Dr. med. dent. Niusha Barahmand Pour:
How much space is lacking, and what role do the bite and supporting tissues play in planning?
Symptoms, examination findings and personal wishes form the basis of individual treatment planning.
Tooth position and bite are assessed together before a correction is planned.
Discuss tooth alignmentChoose 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.
- Space discrepancy
- The difference between available space in the arch and the space required by the teeth.
- Rotation
- Turning of a tooth around its long axis.
- Contact-point displacement
- Misalignment of neighbouring contact areas caused by tooth position.
Know the difference
Crowding is assessed within the dental arch; the occlusion between upper and lower jaws needs additional examination.
Sources and context
Editorial research: 23 October 2026. This explanation covers general principles and does not replace a personal examination. Suitable treatment is discussed following individual assessment.