1. Department of Conservative Dentistry and Endodontics, Pomeranian Medical University in Szczecin, Szczecin, Poland
2. Department of Propaedeutic, Physical Diagnostics and Dental Physiotherapy, Pomeranian Medical University in the Szczecin, Szczecin, Poland
3. Department of Dental Prosthetics and Orthodontics, Jagiellonian University Medical College, Faculty of Medicine, Institute of Dentistry, Kraków, Poland