Orthodontics deals with the prevention and treatment of malocclusion and maxillofacial defects in children, adolescents and adults with the help of orthodontic appliances. The therapy is carried out by a specialist orthodontist and affects not only the proper interdental relations, but also the proportions of the lower and middle sections of the face. The causes of these defects are usually birth defects, improper healing of teeth in childhood or specific behaviour shaping the teeth. They can also arise as a result of injury. The goal of orthodontic treatment is to correct the resulting defects so as to provide patients with a healthy dental system and correct bite. This is important not only because of the straight teeth guaranteeing a nice smile but above all it provides a healthy bite and eliminates maxillofacial defects that can affect the rest of our body.