A large proportion of orthodontic treatments are generally performed in young people between the ages of 11 to 18 years old. It is an ideal period given the development stage of the teeth and jaws; all the permanent teeth have come out and the jaw has taken shape. However, as teenagers are still growing, the jaws are still being developed which can benefit orthodontic treatments. Several treatments are possible, generally aiming to enlarge the palate to widen the available space for the teeth or replace the teeth to give an optimal alignment.

> A narrow upper jaw: having a small, moderate, or severe lack of space could cause difficulties to the alignment of the teeth or malocclusion.
> Impacted permanent teeth: which means that the teeth are not capable of coming out normally.
> Large or irregular spaces between the teeth.
> Teeth positioning: teeth appearing where they shouldn't.
> Any other influence on teeth alignment or malocclusion.

Orthodontic obstacles, like the ones listed below, can lead to several consequences. This is why it is important to correct these issues during the teenage years.

> A deficient mastication that could impair digestion
> Speech complications
> An overaccumulation of plaque and an increased risk of tooth decay and gingivitis
> Periodontium diseases
> Abnormal wear, cracks, and fractures of the teeth
> Pain or exhaustion in the jaw joints