Abstract: The present invention concerns a dental surgery practice, particularly a root canal treatment method. The method consists of a placement of the electra conductive filler of the determined length in the prepared root canal and a precise alignment of the bottom end of the electro-conductive filler with the root canal apex. What is more, the precise alignment is achieved by utilizing the readings on the Apex locator device, which is connected to the top part of the electro-conductive filler. This method employs the electro-conductive filler, which is made as a traditional gutta-percha point with a superficial silver plating or as an electro-conductive rod made from a biologically neutral material (Ag, Ti), placed inside of a shell, which is made from a traditional gutta-percha material.