Currently, there is rapid development of technology in all branches of science, including in dentistry. The intro- duction of new instruments is not possible without prior proof of their safety in experimental research. In this arti- cle, we study the impact of electric extractor on the rat’s periodontal tissues to confirm the safety of this device in case of its use for removing fragments of endodontic instruments from the tooth root canal. In the course of work the authors conducted histological analysis of the mandible of rats in the field of application of the stud- ied device. The result is a conclusion about the safety of using electronic extractor to periodontal tissues and makes recommendations about its implementation in clinical practice.