1. Department of Periodontal and Oral Mucosa Diseases, Medical University of Białystok, ul. Waszyngtona 13, 15-269 Białystok, Poland
2. Department of Biocybernetics and Biomedical Engineering, Białystok University of Technology, ul. Wiejska 45c, 15-351 Białystok, Poland
3. Dental Practice, ul. Waszyngtona 1/34, 15-269 Białystok, Poland
4. Department of Oral Surgery, Medical University of Gdańsk, Dębinki 7, 80-211 Gdańsk, Poland