Orthodontic treatment of adolescents and adults requires an individual approach by every orthodontist. Adolescents may be unmotivated for the treatment and have unsatisfactory oral hygiene. Younger group of adult patients seeks for the clarification of all the procedures and requires modern aesthetic devices that require additional knowledge and skills. Ceramic braces, clear aligner therapy and lingual braces are aesthetic devices commonly used instead of metal braces An orthodontist estimates which therapy is the best for each patient according to the complexity of the treatment and the financial possibilities of a patient. Older group of adult patients usually consults an orthodontist as part of a more complex treatment plan and does not have high aesthetic demands. Orthodontic treatment is used so they could create optimal conditions for other dental procedures. The main goal of such interventions is to replace one or more teeth and to enable high quality, independent, periodontal care. An orthodontist is often only part of a team which consists of periodontists, prosthodontists or surgeons. Adjuvant orthodontic treatment helps an orthodontist raise tipped molars, level the frontal teeth, fix cross-bites and extrude individual teeth. While doing so, the orthodontist should pay attention to possible periodontal problems that are more common among adults than adolescents. In practice, that would mean using lighter forces and sometimes prolonged duration of therapy and regular periodontal control (if required). There are practically no serious periodontal problems among adolescents (possibly pubertal gingivitis). Besides, the orthodontists should assess which patients are not candidates for orthodontic treatment due to poor hygiene, lack of motivation or pathological personality.