The book is dedicated to the basics of endodontics. The manual contains 16 classes that cover the stages, tools and materials of endodontic treatment, as well as issues related to root canal preparation. When preparing the book, the practical and scientific experience of the faculty of the dental faculty of the First Moscow State Medical University named after THEM. Sechenov. The manual complies with the Federal State Educational Standard of Higher Professional Education in the direction of "Dentistry" (review of FSAU FIRO No. 347).