When correcting malocclusion, a considerable number of patients need to have their teeth extracted. The purpose of tooth extraction is to:

1. Uncrowd and align the dentition.

2, adduction of the anterior teeth, improve the face shape.

3. Coordinate the upper and lower arches.

As for whether you need to extract teeth, how many teeth to pull, and which teeth to remove, it is up to the doctor to decide according to clinical examination, X-ray examination, model analysis and so on.