D. M. Neyzberg
Pavlov First Saint Petersburg State Medical University
Russian Federation

Daniil M. Neyzberg, MD, PhD, Associate Professor of the Department of Restorative Dentistry and Periodontology, head doctor of City Periodontal Center „Paks” 

Saint Petersburg

L. Yu. Orekhova
Pavlov First Saint Petersburg State Medical University
Russian Federation

Liudmila Yu. Orekhova, MD, PhD, DSc, Professor, Head of the Department of Dentistry Restorative and Periodontology, President of RPA, Vice President of the Dental Association of St. Petersburg 

Saint Petersburg

E. S. Loboda
Pavlov First Saint Petersburg State Medical University
Russian Federation

Loboda Ekaterina S., PhD, Associate Professor of the department Dental therapeutic and periodontology, dentist of City Periodontal Center „Paks” Ltd 

Saint Petersburg

E. S. Silina
Pavlov First Saint Petersburg State Medical University
Russian Federation

Elvira S. Silina, MD, PhD, Associate Professor of the Department of Restorative Dentistry and Periodontology  

Saint Petersburg