1. Department of Integrated Dentistry, Wroclaw Medical University, Krakowska 26, 50-425 Wroclaw, Poland
2. Clinic of Orthodontics, Academic Policlinic of Stomatology, Krakowska 26, 50-425 Wroclaw, Poland
3. Department of Orthodontics and Dentofacial Orthopedics, Wroclaw Medical University, Krakowska 26, 50-425 Wroclaw, Poland
4. Limed Orthodontics and lmplantology Clinic, Oltaszynska 37, 53-010 Wroclaw, Poland