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Orthodontics

Correcting crowded teeth — straightening crooked teeth

Crowding is one of the most common misalignments: there is simply not enough space in the jaw, and the teeth push over one another. This is not only a cosmetic issue — crowded teeth are harder to clean. How crooked teeth can be straightened gently today.

Dr. Nazanin Böhle · HOS Editorial
6 min read19 June 2026

What is crowding?

Crowding is when the teeth have too little space in the jaw and therefore push over one another or tip out of line. The result is crooked, overlapping teeth — usually in the front, where it is most visible.

Animation: with crowding, the teeth have too little space and push over one another.

What consequences can crowding have?

Crowded teeth are more than an aesthetic issue — they make daily care more difficult:

  • More difficult cleaning — plaque is more easily left behind in the tight gaps.
  • Higher risk of caries and gum problems — hard-to-reach spots encourage caries and inflammation.
  • Uneven wear — unevenly loaded teeth wear down inconsistently.

How is crowding corrected?

Crowding is one of the most rewarding indications for clear aligners: the individually made trays align the teeth step by step and restore a harmonious row of teeth. Planning is done with AI support based on a 3D scan — you see your result in advance as a simulation.

2 – 10
months (depending on severity)
ab CHF 4'500.–
aligners, one jaw
3D + KI
result preview in advance

When should crowding be treated?

In children and adolescents, growth can be used to create space — an early assessment makes sense (see orthodontics for children). But crooked teeth can also be corrected very well in adults; teeth remain movable at any age.

Straightening crooked teeth in Zurich

Are you bothered by crowded or crooked teeth? You'll find more about our orthodontics in Zurich and the aligner treatment on our treatment pages — or arrange a no-obligation consultation directly at our practice at Löwenplatz in Zurich. We show you your possible result as a 3D preview.

This article is for general information only and does not replace individual dental advice. Whether and which treatment is right for you is something we determine in a personal consultation based on your individual situation.

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