1 | Medical University of Silesia in Katowice, Department of Dental Prosthetics, Chair of Prosthetics and Dental Materials, School of Medicine with the Division of Dentistry in Zabrze |
2 | Katedra Protetyki i Materiałoznawstwa Stomatologicznego, Zakład Materiałoznawstwa Stomatologicznego, Śląski Uniwersytet Medyczny |
3 | Medical University of Silesia in Katowice, Department of Dental Prosthetics, Chair of Prosthetics and Denta Materials, School of Medicine with the Division of Dentistry in Zabrze |
4 | Chair and Department of Prosthodontics, Medical University of Silesia in Katowice, Poland |