In this course we will get acquainted with the endodontic preparation system WaveOne Gold – Dentsply Sirona and we will take the first steps in the world of dental operator microscope. We will understand what is the focal length, working field, magnification steps and other useful criteria in choosing a new microscope and working positions to make the treatments under magnification easier. In the practical part we will get acquainted with the microscope and we will prepare an endodontic block or extracted tooth (the access cavity must be made beforehand) with the help of the WaveOne Gold system.