The concept of obtaining and using multipotent mesenchymal stem cells in the treatment of dental diseases: literature review - R. R. Hajbullina; K. V. Danilko; O. R. Shangina; G. A. Valeeva; N. V. Lopatina; L. P. Gerasimova; A. M. Gadiullin (Эндодонтия Today, 2021)