S. B. Ulitovskiy
Pavlov First Saint Petersburg State Medical University
Russian Federation

Sergey B. Ulitovskiy, DMD, PhD, DSc, Professor, Head of the Department of Preventive Dentistry, Deputy Director for Scientific Work of the Research Institute of Dentistry and Maxillofacial Surgery 

Saint Petersburg

O. V. Kalinina
Pavlov First Saint Petersburg State Medical University
Russian Federation

Olga V. Kalinina, DMD, PhD, Associate Professor, Department of Preventive Dentistry, Senior Researcher, Research Institute of Dentistry and Maxillofacial Surgery 

Saint Petersburg

A. A. Leontev
Pavlov First Saint Petersburg State Medical University
Russian Federation

Saint Petersburg

O. V. Khabarova
Saint Petersburg State University
Russian Federation

Saint Petersburg

L. I. Pankrateva
Pavlov First Saint Petersburg State Medical University
Russian Federation

Saint Petersburg

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

Elena S. Solovyeva, DMD, Assistant Professor, Department of Preventive Dentistry 

Saint Petersburg

N. K. Fok
Pavlov First Saint Petersburg State Medical University
Russian Federation

Natalia K. Fok, Senior Laboratory Assistant, Department of Preventive Dentistry 

Saint Petersburg